Consulta: subjectFacets:"Pisces"
Registros recuperados: 79
Data/hora: 10/06/2024 13:33:47

Allozyme comparison of two populations of Rineloricaria (Siluriformes, Loricariidae) from the Ivaí River, upper Paraná River basin, Brazil
Provedor de dados: 74
Autores: Limeira,Daniel M.; Renesto,Erasmo; Zawadzki,Cláudio H.
Two allopatric morphotypes of the genus Rinelocaria were compared through the allozyme electrophoresis technique: one morphotype, R. pentamaculata, from the Keller River in the middle stretch of the Ivaí River basin and the other, R. aff. pentamaculata, from the São João River in the upper portion of the Ivaí River basin. The morphotype from the São João River was collected upstream from the São João waterfall, which is about 80 m deep. Twelve enzymatic systems (AAT, ADH, EST, GCDH, G3PDH, GPI, IDH, LDH, MDH, ME, PGM and SOD) were analyzed, which allowed to score 22 loci. Only loci Aat-2, Est-3 and Mdh-C showed polymorphism. The two samples differed in allele frequencies at the three polymorphic loci. The average expected heterozygosity for all loci was...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Allozymes; Fish genetics; Genetic distance; Polymorphism; Loricariidae; Pisces.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200034

Fator de condição gonadal, índice hepatossomático e recrutamento como indicadores do período de reprodução de Loricariichthys platymetopon (Osteichthyes, Loricariidae), bacia do rio Uruguai médio, sul do Brasil
Provedor de dados: 76
Autores: Querol,Marcus Vinicius Morini; Querol,Enrique; Gomes,Nara Neide Adolpho.
The recruitment period of Locariichthys platymetopon (Isbrucker &amp;amp; Nijssen, 1979) was investigated. It has been found out, through the data analysis, that the gonadal condition factor is a good indicator of the reproductive period and that the hepatossomatic index is probably related to the storage of reservation for the winter period. The recruitment occurred in November coinciding with the reproductive activity of May.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Loricariidae; Locariichthys; Reproductive; Uruguay river.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000300008

Microflore et anchoitage.
Provedor de dados: 5
Autores: Campello, Francois.
The author studies the microbial phenomena which occur during the maturation of French anchovies, some from the Basque, the others from the Roussillon coast. There are some differences in relation with the origin of the fishes. On a marine agar, the microflora of the Mediterranean ones is almost constant or in a light diminution while that of the Atlantic ones is climbing during 9 weeks before a decline. On an extremely salted agar and in the both origins the archaebacteria are increasing in number during 5 to 6 weeks and diminishing before. The complete ripening is obtained within 16-17 weeks. The limits of the significance of the microbiological analysis are discussed.
Tipo: Text
Palavras-chave: MED; France; ANE; Clupeidae; Pisces; Engraulis encrasicolus; Microorganisms; Curing; Processing fishery products.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1826.pdf

Two examples of nutritional pathology related to vitamins E and C deficiencies
Provedor de dados: 5
Autores: Baudin Laurencin, F; Messager, J; Stephan, Gwendal.
Symptoms recalling a nutritional pathology and more precisely a process of lipid peroxydation were observed during the last years in seabass Dicentrarchus labrax and other fishes cultured in tropical marine condition, Ocyurus chrysurus and Lutjanus analis . They included dark coloration, skin ulceration, lethargy, anorexy, emaciation. Histological examinations showed hepatic fatty degenerative lesions, pancreatitis, muscular degeneration and retinal atrophy. Additional vitamins E and C in the food suppressed that pathological symptoms. The previously evoked clinical or histological signs were not achieved in spite of an increase of the level of hepatic, muscular or blood malondialdehyde and of the conjugated dienes of the perivisceral fat. In the same...
Tipo: Text
Palavras-chave: Lutjanus analis; Ocyurus chrysurus; Dicentrarchus labrax; Pisces; Marine fish; Diseases; Nutrient deficiency; Vitamin C; Vitamin E; Vitamin deficiencies; Nutritional requirements; Dietary deficiencies; Deficiency diseases.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1501.pdf

L'homme et les ressources halieutiques. Essai sur l'usage d'une ressource commune renouvelable
Provedor de dados: 5
Autores: Troadec, Jean-paul.
The full exploitation of the world fishery resources has drastically modified the prospects and conditions for progress in fisheries. It was detenninant in the change of the Ocean Regime. Moreover, it widened considerably the range of issues which have to be addressed for an efficient use of marine living resources. Assessment approaches for complex fisheries, carrying capacity of basins and management of bivalve mollusc stocks, natural variability of fish stocks and management implications, methods for access regulation, economic rent, resources and use rights allocation, nature of aitisanal fisheries, strategies for fishery development in Third World countries, international dimensions of fisheries, etc. are among the issues reviewed in this book by...
Tipo: Text
Palavras-chave: Pisces; Mollusca; Economy; Marine living resource; Fishery.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-1511.pdf

La dynamique des pêches côtières du pays bigouden
Provedor de dados: 5
Autores: Charuau, Anatole.
In the beginning, the coastal fleet of the Bigouden region fished by trawling and was completely focused on exploiting lobster and hake. It is a traditional business that expanded between the last war and the 70s, reaching its peak between 1975 and 1980.  The best image to give an idea of this fleet is that of a "bucket waterwheel" endlessly discharging its catch in the four ports of the Guilvinec district. Where there is a seafaring business in Guilvinec, Loctudy and Saint-Guénolé, there is a complementarity that is expressed in two ways: - coastal fishing constitutes a very noticeable and regular supplement to production, since sales happen daily and only bad winter weather causes a relative decrease in the supplement. - coastal fishing gives a...
Tipo: Text
Palavras-chave: France; Brittany; Data; Fishing zone; Fleet; Trawling; Commercial species; Costal fisheries; Finistere; Bretagne; Atlantique Nord Est; Golfe de Gascogne; Merluccius; Lophius; Pisces; Nephrops Norvegicus; Zone peche; Exploitation; Flottille; Chalut; Donnee; Espece commerciale; Peche cotiere.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-2202.pdf

L'alimentation de Diplodus annualris, Diplodus sargus, Diplodus vulgaris et Sparus aurata (Pisces, Sparidae) dnas le golfe du Lion et les lagunes littorales.
Provedor de dados: 5
Autores: Rosecchi, E.
The four Sparidae studied are coastal species that regularly enter the Mediterranean coastal salt lagoons. Changes in diet with regard to size class of fish, and occasionally season, are detailed. For each species, diets in the sea and in the lagoons are compared using several methods and show differences. Individuals from lagoons do not eat, or in very low numbers, mollusks, echinoderms and decapods. However, as their feeding is very rich and diverse, sparid fishes can probably find in the lagoons, whatever their age, the prey necessary to their growth. Trophic factors cannot explain age structure in lagoons and the absence of some age classes.
Tipo: Text
Palavras-chave: Pisces; Sparidae; Trophic levels; Age composition; Predation.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1774.pdf

The Australian mariculture industry: Finfish, molluscs and crustaceans.
Provedor de dados: 5
Autores: Baker, J; Kenway, M.
Australia's interest in mariculture has been comparatively recent when compared with the developments in many other Pacific countries. Two exceptions are native oysters, cultivated for food since the late 1880's, and pearl oysters which have been cultured, particularly in the northern part of Australia, following the initial work of Saville-Kent.
Tipo: Text
Palavras-chave: Australia Coasts; Crustacea; Tridacna gigas; Mytilus edulis planulatus; Pinctada maxima; Ostrea angasi; Crassostrea gigas; Saccostrea commercialis; Mollusca; Coryphaena hippurus; Lates calcarifer; Pisces; Marketing; Economics; Research programmes; Aquaculture development.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1499.pdf

Biodiversité et dynamique des peuplements ichtyiques de la mangrove de Guaratuba, Brésil
Provedor de dados: 5
Autores: Chaves, P; Bouchereau, Jl.
The Bay of Guaratuba, whose area is approximately 45 km(2), is a basin, situated to the south of Brazil (25 degrees 52' S; 48 degrees 39' W) and connected to the Atlantic ocean. In its northern part, a region of mangrove is found, under the influence of seasonal fluvial contributions, dominated by Laguncularia racemosa. The depth exceeds 6 m in some places. According to the period of the year, salinity varies between 3 and 37, and temperature between 15 and 28 degrees C. Several of the present fish species are exploited by commercial and recreational fisheries. This work describes characteristics of the fish populations occupying this mangrove, and temporal and spatial evolution of populations of the main species from available data on their biology....
Tipo: Text
Palavras-chave: Pisces; Organisation; Domaine paralique; Mangrove; Atlantique ouest; Pisces; Organisation; Paralic realm; Mangrove; Western Atlantic.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43615/43917.pdf

Le Maigre, Argyrosomus regius (Asso, 1801) (Pisces, Perciformes, Sciaenidae) du Golfe de Gascogne et des eaux plus septentrionales
Provedor de dados: 5
Autores: Quero, Jean-claude; Vayne, Jean-jacques.
The meagre (Argyrosmus regius ) of Bay of Biscay is found along the coast and in the Gironde Estuary from spring to autumn, and in deeper waters during the cold season. It is never abundant at the north of the Pertuis charentais. The young individuals and adults do not have the same distribution. Spawning takes place between mid May and late July in the Gironde Estuary. The young fish feed on small crustaceans and the adults on pelagic fishes. Growth is rapid. The meagre emits loud grunts and the fishermen of the Gironde use these noises to locate the fish and to position their nets.
Tipo: Text
Palavras-chave: Pisces; Environmental effects; Fishery statistics; Fishery biology; Distribution records.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1766.pdf

Selection of finfish species for aquaculture development in Martinique (FWI).
Provedor de dados: 5
Autores: Thouard, Emmanuel; Soletchnik, Patrick; Marion, J.
Since 1981, in Martinique, a programme of selection of fishes suitable for aquaculture has been conducted. Zootechnical and socio-economical constraints have led to the choice of three species, endemic and exotic: the palometa (Trachinotus goodei ), the red drum (Sciaenops ocellata ) and the red florida hybrid (Oreochromis sp.).
Tipo: Text
Palavras-chave: Trachinotus goodei; Pisces; Brood stocks; Sea water; Fresh water; Recirculating systems; Survival; Eggs; Sexual maturity; Spawning; Environmental conditions; Tropical fish; Fingerlings; Rearing; Aquaculture development; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1492.pdf

Sur l'utilisation des criteres comportementaux pour determiner l'etat de sante et l'evolution probable des elevages de poissons marins. 1: Cas des prelarves et des larves de Diplodus sargus, Sparus aurata, Puntazzo puntazzo, Lithognatus mormyrus
Provedor de dados: 5
Autores: Kentouri, M; Divanach, P.
In aquaculture and particularly during fish larval rearing when the time between moment of stress application and the non-return point acquisition is very limited, criteria which may provide health state and stock evolution are of great importance. Now, in stress responce chronology, the specific behavioral scheme modification is first noted. This early identification, associated with initial conditions restoration, generaly do not involve after effects. Ethological knowledge beeing the basis of this for-casting strategy, the authors define in this study a simplified behavioral scheme of four sparid larval species in a range of physiological conditions.
Tipo: Text
Palavras-chave: Lithognathus mormyrus; Puntazzo puntazzo; Sparus aurata; Diplodus sargus; Sparidae; Pisces; Prediction; Biological stress; Ethology; Fish larvae; Pathology.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1255.pdf

Incidence de la salinite sur les equilibres de distribution hydrique et ioniques et sur le metabolisme respiratoire dans le muscle blanc, le muscle rouge et la branchie chez le muge Chelon labrosus
Provedor de dados: 5
Autores: Gallis, J; Piquemal, S; Lambert, J; Sergent, P; Rousseau, V.
Oxygen consumption, water, K super(+) and Na super(+) contents were measured in white muscle, red muscle and gill epithelium in the mullet Chelon labrosus) in relation with the duration of fresh water or sea water (1500mOsm) adaptation. The unit respiratory activities in gill and red muscle where respectively 5 and 3 timesmore elevated than in white muscle. The pericellular K super(+)/Na super(+) ratio of the 3 tissues decreased with the fresh water adaptation duration. In the gill, the intracellular K super(+)/Na super(+) ratio was stable while the parameter decreased strongly in the white muscle. The results are discussed in relation to energetic cost of homocellular regulation and homoepithelial regulation.
Tipo: Text
Palavras-chave: Chelon labrosus; Mugilidae; Pisces; Gills; Muscles; Oxygen consumption; Respiration; Ions; Water balance; Osmoregulation; Salinity effects.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1251.pdf

Observations ichtyologiques effectuées en 2005
Provedor de dados: 5
Autores: Quero, Jean-claude; Spitz, J.
In 2005, a flying fish Cheilopogon cyanopterus, which doesn't figure among the Europeans faunas although pointed out in 1973, is captured in the Bay of Biscay. Following the catch of a Cubiceps gracilis near the coast in Britain, the authors recapitulating the former descriptions indicate that adults of this oceanic species remain in the open sea. Only juveniles come, rarely, to the coast. The species figures in the diet of common dolphins, striped dolphins, swordfishes and tunas. NOT CONTROLLED OCR
Tipo: Text
Palavras-chave: Prey; Bay of Biscay; Cubiceps gracilis; Cheilopogon cyanopterus; Pisces; Golfe de Gascogne; Distribution; Cubiceps gracilis; Cheilopogon cyanopterus; Pisces.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3657.pdf

The significance of colour patterns in fish for the study of some fundamental issues in behaviour.
Provedor de dados: 5
Autores: Baerends, Gerard P.
In this paper, the author shows why fish can be extremely valuable subjects for the study of a number of behaviour problems of crucial fundamental importance. As this special suitability is based on the capacity of changing rapidly and reversibly the body colouration and its marking patterns, he gives examples of the relation between colours and behaviour in fish.
Tipo: Text
Palavras-chave: Pisces; Colour; Behaviour.
Ano: 1976
URL: http://archimer.ifremer.fr/doc/1976/publication-1998.pdf

Aquaculture activities in Fiji
Provedor de dados: 5
Autores: Vereivalu, T.
Fiji has no aquaculture tradition, but the Government is engaged in aquaculture production since 1969, with the help of other countries and international organization like F.A.O. Some species have been tested: Fishes: Grass carp (Ctenopharyngodon idellus ) and Tilapia ; Molluscs: Oyster (Crassostrea echinata ) and Mussel (Mytilus viridis ); Crustacean: freshwater prawn (Macrobrachium rosenbergii ) and shrimps (Penaeus monodon, P. indicus, P. stylirostris ).
Tipo: Text
Palavras-chave: Tilapia; Ctenopharyngodon idella; Pisces; Mytilus viridis; Mollusca; Penaeus stylirostris; Penaeus indicus; Penaeus monodon; Macrobrachium rosenbergii; Crustacea.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1498.pdf

Energy-protein management by some warmwater finfishes.
Provedor de dados: 5
Autores: Luguet, P; Moreau, Y.
If warmwater finfish protein requirements as level in diet is low, absolute intake per day is similar to those of coldwater species. But relation of this requirement with specific growth rate differs for strictly warmwater fishes as Tilapias. Analysis of partition between protein and non-protein energy retention shows that these species with Clarias make a better use of non-protein energy provided and consequently improve their protein retention. Better carbohydrate digestibility and metabolism are propounded as part of the explanation.
Tipo: Text
Palavras-chave: Clarias; Oreochromis mossambicus; Oreochromis aureus; Oreochromis niloticus; Tilapia; Cichlidae; Pisces; Nutritional requirements; Digestibility; Diets; Proteins; Metabolism; Carbohydrates; Nutrition; Feeding; Growth rate.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1424.pdf

Observations sur la Sardine des Açores et nouvelle contribution à l'étude du genre-
Provedor de dados: 5
Autores: Letaconnoux, Robert.
Tipo: Text
Palavras-chave: Acores; Clupeidae; Pisces; Sardina; Atlantic; Açores; Mer Méditerranée; Répartition géographique; Biométrie; Sardina.
Ano: 1954
URL: http://archimer.ifremer.fr/doc/1954/publication-2206.pdf

Mechanisms of biochemical adaptation of sea organisms to environmental stresses.
Provedor de dados: 5
Autores: Polikarpov, G; Rudneva, I.
The purpose of the present work is based on the study of character changes in blood metalloproteins of marine fishes during their adaptation to irradiation.
Tipo: Text
Palavras-chave: Pisces; Acclimation; Irradiation; Serum; Proteins; Biochemical phenomena; Biological stress; Environmental conditions.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1530.pdf

Approche microbiologique de l'anchoitage.
Provedor de dados: 5
Autores: Campello, Francois.
The maturation of salted anchovies leads to a product of particular organoleptic properties. The manufacturers have to resolve many problems. A thorough investigation of the phenomenons which occur is necessary to resolve them. The maturation is conducted at different temperatures. The present paper reports the microbiological variations of the present microfloras, from hyper-halophilic to the non-halophilic, which escort organoleptical and biochemical ones chiefly at 20 degree C. If the maturation's temperature is maintained high (28 degree C) there is a strong proteolysis. At 20 degree C the organoleptical characters appear within 2 months.
Tipo: Text
Palavras-chave: France; MED; Engraulis encrasicolus; Clupeidae; Pisces; Microorganisms; Microbiology; Organoleptic properties; Curing; Processing fishery products.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1825.pdf

Colloque sur l'aquaculture - 22 - 24 octobre 1973 - Brest
Provedor de dados: 5
Autores: Laubier, Lucien; Reyss, Daniel.
Ces journées ont permis de préciser les résultats scientifiques obtenus par des années d'efforts poursuivis avec ténacité. Dès sa création en effet, le CNEXO s'est efforcé de susciter la constitution d'équipes de recherches spécialement consacrées à l'aquaculture ; il s'est attaché, en tant que coordonnateur national, à réorienter les programmes d'un certain nombre de laboratoires vers des travaux liés à l'aquaculture, en particulier des études sur la reproduction et la nutrition des animaux marins ; il s'est préoccupé de former le personnel sans lequel cette orientation nouvelle et les expérimentations "sur le terrain" auraient été vides de sens. Des bourses de spécialisation ont été attribuées à des chercheurs et à des techniciens qui ont notamment été...
Tipo: Text
Palavras-chave: Aquaculture; Reproduction; Nutrition; Mollusca; Crustacea; Pisces; Croissance organisme.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/00173/28433/26766.pdf

Review and current status of the aquaculture potential for the mahimahi, Coryphaena hippurus
Provedor de dados: 5
Autores: Kraul, S.
The mahimahi, Coryphaena hippurus , has excellent potential for aquaculture due to its fast growth (2 kg at 6 months, 9 kg at 1 year), good food conversion efficiency (30%, wet weight), high fecundity with natural captive spawns (200,000 eggs/female/2 days year round for a 1 year old female), and high price (US$ 9.00/kg wholesale in Hawaii).
Tipo: Text
Palavras-chave: Copepoda; Rotifera; Coryphaena hippurus; Coryphaenidae; Pisces; Artificial feeding; Diets; Spawning; Fingerlings; Females; Eggs; Food; Food conversion; Hatcheries; Nutritional requirements; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1473.pdf

Dynamique des populations de poissons.
Provedor de dados: 5
Autores: Daget, J.
The author explains that the population dynamics study, descriptive and explicative way, the changes which happen in the structure and the parameters (growth rate, sex ratio, fecundity, mortality etc.) of a monospecific population, by the use of mathematical models which permit prediction and simulation. If the fish population is not exploited, it is necessary to sample it directly and obtain samples representative of the demographical structure by experimental fishing (like electrical fishing) or by selectivity corrections. If the population is exploited, often the exploited phasis of the stock is only studied from samples representative of the whole captures. Now it happens that there is an important difference between the demographical structure of the...
Tipo: Text
Palavras-chave: Pisces; Catch statistics; Mathematical models; Population dynamics.
Ano: 1976
URL: http://archimer.ifremer.fr/doc/1976/publication-1999.pdf

Effects de le temperature et du regime alimentaire sur certains parametres de l'immunite cellulaire du loup de mer en elevage
Provedor de dados: 5
Autores: Deschaux, P; Peres, G.
The data showed that antibody response and NK cells activity of a teleostean fish Dicentrarchus labrax (Loup de mer) were maximal when animals were bred at a temperature equal to 18 degree C. A proteinoprive diet enhanced T cytotoxic response and diminished NK cell activity. A fast of 15 days had no effect on these two cellular responses.
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Antibodies; Starvation; Toxicity; Cells; Immunity; Diets; Nutrition; Temperature effects; Fish culture.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1248.pdf

Liaison de l'oestradiol 17 beta dans les hepatocytes de truite Arc-en-ciel et induction de la vitellogenine et de son ARNm specifique
Provedor de dados: 5
Autores: Maitre, J; Mercier, L; Dolo, L; Valotaire, Y.
In the liver of rainbow trout (Salmo gairdnerii ), vitellogenin (Vg) synthesis is influenced by oestradiol (E sub(2)) which is believed to act through the classical mechanism of steroid hormone action. After binding of the hormone to a soluble specific receptor protein, the oestradiol-receptor complex is translocated to the nucleus, where it interacts with DNA and modulates expression of Vg genes, leading to increased synthesis of specific mRNA and Vg. The authors show here: (i) the presence of specific oestrogen receptors in the cytosol of the male trout liver. (ii) The male liver, offering, an ideal experimental control of "zero" background, the authors followed - in the liver of male trouts - the kinetics of induction of Vg mRNA by hybridization with Vg...
Tipo: Text
Palavras-chave: Salmonidae; Pisces; Proteins; Liver; RNA; Steroids; Biosynthesis; Receptors; Sex hormones; Sexual reproduction.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1230.pdf

Characteristics of one sea winter Atlantic salmon stock caught on Elorn river from 1974 to 1984
Provedor de dados: 5
Autores: Prouzet, Patrick; Gaignon, Jean-louis.
From observations gathered on grilse populations sampled during the fishing period (March -mid-June) or after the fishing season, the authors noted: a strong heterogeneity and length, the mean value of which increase from May to December, a sex-ratio not different from 1 male for 1 female, a high relative fecundity superior to those of spring salmon population sampled. The comparison between fish of local and foreign origins did not allow to observe significant differences between the biological characteristics studied (weight, length, sex-ratio and fecundity).
Tipo: Text
Palavras-chave: Salmo salar; Salmonidae; Pisces; Weight; Fecundity; Sex ratio; Length weight relationships; Migratory species.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1818.pdf

Constitution of aquacultural stocks: Genetic aspects.
Provedor de dados: 5
Autores: Chevassus, B.
Before reaching of production level justifying an elaborated genetic improvement program, the new aquaculture species deserve a minimal strategy to avoid the consequences of uncontrolled genetic phenomena. Three main aspects will be discussed: initial constitution of the broodstock; maintenance of the broodstock; selection of the broodstock.
Tipo: Text
Palavras-chave: Oncorhynchus keta; Salmo salar; Salmo trutta; Salmonidae; Pisces; Marine molluscs; Marine fish; Sex ratio; Females; Males; Eggs; Larvae; Spawning populations; Aquaculture; Population genetics.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1442.pdf

Enzymatic polymorphism study as help for constitution of initial broodstock for a new cultivated finfish species.
Provedor de dados: 5
Autores: Renno, J; Luquet, P.
Leporinus friderici is a South American promising species for fish culture. In French Guiana the "morphological species", L. friderici, L. granti, L. lebaili and L. affinis steyermarki are found. Their identification is sometimes difficult on usual criterion. To constitute an initial broodstock of L. friderici from local wild populations, the genetic structure of these species was studied. Fifteen enzyme systems, representing twenty loci, were screened.
Tipo: Text
Palavras-chave: French Guiana; Leporinus; Leporinus granti; Leporinus friderici; Anostomidae; Pisces; Embryos; Mortality; Genetics; Freshwater fish; Rearing; Breeding; Biopolymorphism; Brood stocks; Enzymatic activity.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1441.pdf

Hormone-induced spawning of cultured tropical finfishes.
Provedor de dados: 5
Autores: Marte, C.
Commercially important tropical freshwater and marine finfishes are commonly spawned with pituitary homogenate, human chorionic gonadotropin (HCG) and semi-purified fish gonadotropins. These preparations are often administered in two doses, a lower priming dose followed a few hours later by a higher resolving dose. Interval between the first and second injections may vary from 3-24 hours depending on the species. Variable doses are used even for the same species and may be due to variable potencies of the gonadotropin preparations.
Tipo: Text
Palavras-chave: Teleostei; Pisces; Tropical fish; Induced breeding; Sex hormones; Animal reproductive organs; Marine fish; Freshwater fish; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1436.pdf

Biologie du copepode Lernaeenicus sprattae Sowerby, 1806) et ses actions pathogenes sur les populations de sardines des cotes du  Languedoc-Roussillon.
Provedor de dados: 5
Autores: El Gharbi, Salwa; Rousset, Viviane; Raibaut, André.
Lernaeenicus sprattae is a blood-feeding copepod parasite of the pilchard, Sardian pilchardus . The larval stages of L. sprattae attach to the skin or the fins of the larval fish when the fish enter the lagoons. The mature, and in some cases ovigerous females of L.sprattae seek out the base of the fins or directly implant in the eye of juvenile or adult pilchards. The copepod has a particularly serious  effect at the site of infection: its feeding has a severe effect on the fish. The pilchard returns to its breeding grounds in the open sea at the end of summer; this migration allows the copepod to complete its reproductive cycle and a new cycle of infestation is able to begin.
Tipo: Text
Palavras-chave: France; MED; Sardina pilchardus; Clupeidae; Pisces; Lernaeenicus sprattae; Copepoda; Marine crustaceans; Hosts; Parasite attachment; Parasites.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1821.pdf

L'activite de deplacement et le reperage de la nourriture chez le bar juvenile captif
Provedor de dados: 5
Autores: Anthouard, M; Paris, J.
Movement activity and localization of food were studied dynamically with the objective of establishing the capacities of behavioral adaptation of the young Dicentrarchus labrax faced with a novel situation. The role played by previous rearing conditions was demonstrated, the level of stimulation being a sensitive intervening factor (currents associated with the food). The data show the favourable effects of such treatment, and are in agreement with work carried out on higher vertebrates, which have brought to light the importance of early stimulation in behavioral ontogeny which respect to emotionality as well as capacities of adaptation in subjects reaching adulthood.
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Juveniles; Stimuli; Locating; Locomotion; Fish culture; Nutrition; Ethology.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1253.pdf

Peche de l'anchois (Engraulis encrasicholus ) dans le golfe de Gascogne et sur le littoral atlantique de Galice depuis 1920. Variations quantitatives.
Provedor de dados: 5
Autores: Junquera, Susana.
Using the fishing records from the most relevant ports of the Cantabrian and Galician coasts, th history of the anchovy (Engraulis encrasicholus ) fishery in this area is reconstituted. The crisis observed and the variations in the fishing areas throughout the time are analyzed. An estimation of the age classes composition in the catches founded on commercial classification data can be made. The hypothesis of existence of a core population in the Southern part of the Bay of Biscay is presented and that only under certain advantageous condition the expansion of this species throughout all the Cantabrian Sea was possible.
Tipo: Text
Palavras-chave: Pisces; Age composition; Population dynamics; Catch/effort; Fishery statistics.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1795.pdf

Etude preliminaire des equilibres de distribution de l'eau et des ions au cours de l'ovogenese de Solea solea
Provedor de dados: 5
Autores: Gallis, J; Lemenn, F; Lebrun, A; Nunez, R.
During oogenesis of Solea solea L., gonadal changes in water, Na super(+) and K super(+) ions seem to be related to yolk protein incorporation by the oocyte. The decrease in oocyte water accumulation, associated with an increase in pericellular water accumluation and a decrease in K super(+) concentration occurs when vitellogenin enters the oocyte. Na super(+) concentration decreases in the oocyte at the end of the exogenous vitellogenesis when the first stages of the oocyte maturation take place. Water accumulation in the pericellular space during vitellogenesis allows the rapid transfer of water from this compartment into the oocyte during the terminal phase of maturation. However the total amount of gonadal water remains stable.
Tipo: Text
Palavras-chave: Solea solea; Soleidae; Pisces; Hydration; Water content; Ion accumulation; Sexual maturity; Ovaries; Oogenesis; Solea; Maturation ovocytaire; Ovogenèse; Eau; Ions.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1231.pdf

The state of the art of IFREMER in tropical aquaculture
Provedor de dados: 5
Autores: Calvas, Jacques.
IFREMER, a French governmental agency, is engaged in research on tropical aquaculture since 1971, with the aims to develop new activities in French overseas territories and to export French technology to foreign countries. With 80 searchers and technicians the "Centre Oceanologique du Pacifique" is the main IFREMER's centre involved in tropical aquaculture. The research has been focused on the complete control of the whole cycle: constitution of broodstock, maturation and reproduction, larval rearing, and grow-out.
Tipo: Text
Palavras-chave: Lates calcarifer; Pisces; Penaeus stylirostris; Penaeus indicus; Penaeus monodon; Macrobrachium rosenbergii; Crustacea; Perna viridis; Crassostrea rhizophorae; Crassostrea gigas; Saccostrea echinata; Brood stocks; Reproduction; Larval development; Rearing; Research institutions.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1500.pdf

Résultats scientifiques de la campagne du Caudan dans le Golfe de Gascogne
Provedor de dados: 5
Autores: Koehler, R.
Le 19 août 1895, le " Caudan" ayant à bord une commission scientifique composée de quatre naturalistes, MM. Thoulet, Roule, Le Dantec et Koehler, quittait le port de Lorient pour une campagne de deux semaines en vue d'opérer des dragages profonds dans le golfe de Gascogne et de faire des observations océanographiques. L'exposé des résultats scientifiques de cette exploration fait l'objet du présent volume. (OCR NON CONTRÔLE]
Tipo: Text
Palavras-chave: Histoire; Campagne; Biologie; Ecologie; Pisces; Océanographie; Golfe de Gascogne.
Ano: 1896
URL: http://archimer.ifremer.fr/doc/00002/11345/7914.pdf

Etude de la composition corporelle de la sole (Solea solea ) au cours du jeune: Influence de la temperature
Provedor de dados: 5
Autores: Richard, P; Djabali, M; Lagardere, Francoise; Lagardere, J.
The effects of starvation on Solea solea at 10 and 20 degree C in sea water, were studied. At 20 degree C fishes start to die on week 4; at 10 degree C they support a longer starvation period (9 weeks). Proximate analysis shows that protein are more steadily used at 20 degree C than at 10 degree C, contrarily to the corporal lipids which are used at the same rate. Starvation results in a reduction of liver lipids and glycogen. This reduction is more pronounced at 20 degree C : 70% of hepatic glycogen is used at this temperature within the first week of starvation against 30% at 10 degree C.
Tipo: Text
Palavras-chave: Solea solea; Soleidae; Pisces; Survival; Tissues; Biochemical composition; Temperature effects; Proteins; Lipids; Starvation; Metabolism.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1246.pdf

Les chalutages experimentaux: Utilisation de la temperature et de la profondeur comme variables auxiliaires.
Provedor de dados: 5
Autores: Chevalier, R.
Very often stratification of bottom-trawl surveys is done by using a stratified random sampling scheme. If a survey is directed towards a group of species, the sampling scheme has to be a compromise between these different interests. So the sampling scheme is not totally efficient for each of the species. The use of auxiliary variables, as depth or temperature, looks as if such supplementary informations could neither improve the efficiency of the estimators nor the subsequent analysis (analysis of covariance).
Tipo: Text
Palavras-chave: Hippoglossoides platessoides; Gadus morhua; Gadidae; Pisces; Variance analysis; Bottom trawls; Experimental fishing.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1803.pdf

Etude cytologique ultrastructurale des anomalies hepatiques du loup, de la daurade, et de l'anguille, induites par une alimentation artificielle
Provedor de dados: 5
Autores: Bac, N; Biagianti, S; Brusle, J.
In the three species Dicentrarchus labrax, Sparus auratus , and Anguilla anguilla an artificial feeding (dry pellets) disturbs liver cells as revealed at ultrastructural level. In hepatocytes, anomalies consist of lipids storage (liposomes) considered as deviation in fatty acids metabolism. Moreover are observed cellular alterations (mitochondrial vacuolization, nuclear pycnosis) related to degenerative process. It is of great interest to understand wether liver modifications are just a reaction to an unbalanced feeding or a true trophic pathology.
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Natural populations; Fish culture; Lipids; Fatty acids; Cytology; Ultrastructure; Cells; Diseases; Pellet feeds; Metabolism; Liver; Artificial feeding; Nutrition disorders.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1250.pdf

Alimentation du merlan Merlangius merlangus L. en Mer Celtique
Provedor de dados: 5
Autores: Du Buit, Marie-henriette; Merlina, Frédéric.
The importance of predation by the whiting (Merlangius merlangus ) from the Celtic Sea has been studied by analysis of stomach contents. Eight hundred and thirteen whitings have been examined during 1984-1986 period. Fish food totalizes 97% of food. It is chiefly a swimming species: no cannibalism has been observed. The daily food index varies between 2 and 4% according to the length and the annual consumption on fishes of nominal catches (11230 t for 1983) would reach 135,000 t corresponding to species already fished for human consumption and the fish meal industry.
Tipo: Text
Palavras-chave: Celtic Sea; ANE; Gadidae; Pisces; Merlangius merlangus; Predator control; Stomach content; Feed composition; Feeding.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1744.pdf

Comportement de poissons marins dans un champ electrique. Perspectives d'application a la peche.
Provedor de dados: 5
This work, divided in three parts, intends to establish a synthesis of knowledge about electric sea fishing. Taxis and tetanus thresholds for stimuli. In the second part, fish behaviour in electric field is described to know what sort of stimuli are the most efficient. The third part shows a fishing gear with light, electric field and pump and sums up the results of I.S.T.P.M. studies. Different problems are discussed and theoretical efficiency of the device is evaluated for sardines, Sardina pilchardus. At last, foreign studies about electric beam trawl are approached in an annex part.
Tipo: Text
Palavras-chave: Pisces; Pump fishing; Electrified gear; Electric stimuli; Electric fishing.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/publication-1936.pdf

Les Sars Deplodus sargus (Linne 1758) du Golfe du Lion: croissance et caracteristiques des debarquements aux criees de Sete et du Grau-du-Roi.
Provedor de dados: 5
Autores: Man-wai, Rabenevanana; Quignard, Jean-pierre.
Age and growth of seabream D. sargus in the Gulf of Lions (Mediterranean Sea) were examined using scale reading. Growth was expressed by the von Bertalanffy's equation based on the estimation of total lengths at the time of annual ring formation. The growth in weight and the length-weight relationship were calculated for both sexes separately and combined during and after spawning periods. Preliminary investigations on the characteristics of commercial catches (from Sete and Grau-du-Roi commercial fishing grounds) were also carried out.
Tipo: Text
Palavras-chave: Diplodus sargus; Sparidae; Pisces; Fishing grounds; Spawning; Fishery biology; Age determination; Fish catch statistics; Length weight relationships; Scale reading; Growth.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-1845.pdf

Snook (Centropomidae) and grouper (Serranidae) mariculture in the Gulf of Mexico and Caribbean Basin
Provedor de dados: 5
Autores: Roberts Jr, D.
Centropomidae and Serranidae, sometimes collectively misnamed "sea basses", are suitable for aquaculture in pens, ponds, and raceways around the tropical and subtropical latitudes of the world. Western Atlantic Ocean species were recently considered for farming. South Florida, Mexico, Central and South America and the Antilles areas of the Caribbean Basin have extensive areas suitable for farming groupers and snook. Principal species of interest are the common snook (Centropomus undecimalis ), the fat snook (C. parallelus ), the Nassau grouper (Epinephelus striatus ), Black seabass (Centropristis striatus ), Gag (Mycteroperca microlepis ), and jewfish (E. itajara ).
Tipo: Text
Palavras-chave: Epinephelus itajara; Epinephelus striatus; Centropomus undecimalis; Pisces; Brood stocks; Culture tanks; Larval development; Fingerlings; Hormones; Induced breeding; Spawning; Tropical fish.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1477.pdf

Grow-out mariculture techniques in tropical waters: A case study of problems and solutions in Hong Kong.
Provedor de dados: 5
Autores: Wu, R; Lee, J.
Raft culture is practised and trash fish is being used as feed in Hong Kong. Culture space is limited and most of the culture sites are over-crowded. Food conversion ratio is poor (about 10-15), grow-out mortality is high (30-50%) and fish kills caused by oxygen depletions, algal blooms and red tides occur frequently. Disease and water pollution are also problems.
Tipo: Text
Palavras-chave: Sparidae; Pisces; Indicator species; Diseases; Water pollution; Cage culture; Artificial feeding; Food fish; Oxygen depletion; Mortality; Growth; Stocking density; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1427.pdf

Etude des pecheries, reflexions sur l'environment et la gestion multispecifique.
Provedor de dados: 5
Autores: Le Guen, Jean-claude; Chevalier, Robert.
All considerations about halieutic stocks inevitably had to attain the recognition of relations which are established between the resource and its natural environment. These phenomenons are exposed in the first part. About consequences of human interventions, both of these aspects must be taken into account: the introduction of new species and fishing. Second part deals with the use of models in stock management.
Tipo: Text
Palavras-chave: Mollusca; Crustacea; Pisces; Fishery economics; Fishery management; Fishery biology; Stock assessment; Ecosystems; Environmental effects.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-1859.pdf

Pathology of marine warmwater finfish in Israel: Problems and research
Provedor de dados: 5
Autores: Colorni, A.
A condition in Sparus aurata larvae termed "distended gut syndrome" (DGS) has become a major problem in the past three seasons. Unable to digest rotifers and brine shrimp nauplii, the larvae develop a swollen abdomen, exhibit a disoriented spinning motion and are swept passively with the current. Bacterial or viral infections were suspected. Chloramphenicol-supplemented larval food did not affect the prevalence of DGS. Virus-like particles 80 nm in diameter were observed in necrotic cytoplasm of midgut wall cells.
Tipo: Text
Palavras-chave: Israel; Sparidae; Pisces; Sparus aurata; Fish diseases; Fish larvae; Pathology.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1479.pdf

Quelques aspects socio-economiques de la pecherie artisanale beninoise de Pointe-Noire (Congo).
Provedor de dados: 5
Autores: Gobert, Bertrand.
The foreign artisanal fishery of Pointe-Noire (Congo) significantly evolved since its beginning, in the 1950s, by the number of fishermen and canoes, as well as the fishing techniques used and by its socio-economic organization. The fishery for Sardinella by surface gill-nets, its main activity, is based on common ownership and savings, thus allowing partial reinvestment of fishing revenues, the riskier (such as bottom gill-net) being left to individual initiatives. The foreign fishery employs many Congolese fishermen, in a permanent or very occasional way. However no improvement effect seems to have taken place in favor of the local artisanal fishery.
Tipo: Text
Palavras-chave: Clupeidae; Pisces; Sardinella; Fishery economics; Fishing gear; Artisanal fishing.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1829.pdf

Adaptations biochimiques intestinales chez la truite: Influence de l'aliment et de la salinite sur quelques proprietes membranaires
Provedor de dados: 5
Autores: Leray, C.
The authors report the results of physiological and biochemical experiments which confirm the important role player by fish (Salmo gairdneri ) intestinal mucosa in their osmoregulatory process. The ability of the dietary lipids to modulate this function is described. It was demonstrated that the ionic apical permeability of the enterocytes are related to their membrane lipid composition. The importance of the essential fatty acids is emphasized. The time course changes of the apical permeability are of value in improving sea water adaptation, similar conclusions are reported for Nacl supplementation.
Tipo: Text
Palavras-chave: Salmonidae; Pisces; Biological membranes; Fatty acids; Diets; Osmotic adaptations; Biochemical phenomena; Intestines; Lipids; Nutrition; Salinity effects; Euryhalinity; Osmoregulation.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1249.pdf

Définition d'un modèle d'élevage larvaire intensif pour la daurade Sparus auratus
Provedor de dados: 5
Autores: Ounais-guschemann, Nadia.
This study defines rearing parameters for mass products of 30-day old post larvae. Continuous lighting (600 lux) optimizes the predatory activity and suppresses the feeding rhythm. For 4-5 mm larvae (15 days), food ingestion slows down if the prey concentration in the tank is below 5 rotifers/ml, while there is no such threshold for 6-7 mm larvae (22 days). The rotifer Brachionus plicatilis , between 100 and 200 mu m, is an adequate initial prey, it can be replaced by Artemia salina for 7-8 mm larvae (30 days). It is observed that free amino acids and essential fatty acids contents have a prominent role in larvae growth; docosahexaenoic acid (C22:6n-3) content could be determined. Finally, the development of the swim bladder is facilitated by the renewal...
Tipo: Text
Palavras-chave: Sparus auratus; Pisces; Marine fish; Environmental diseases; Fatty acids; Amino acids; Controlled conditions; Juveniles; Culture tanks; Growth; Light effects; Nutritional requirements; Fish larvae; Syndrome de paroi; Nutrition; Alimentation; Lumière; Inflation primaire de la vessie natatoire; Sparus auratus; Elevage larvaire intensif; Poisson.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/these-1679.pdf

Développement et utilisation des marqueurs génétiques hypervariables chez les espèces marines. Rapport de synthèse 1995-1998
Provedor de dados: 5
Autores: Bonhomme, Francois; Gerard, Andre.
L'objectif scientifique de l'Unité de Recherche Marine n0 16 est de partager les savoir faire conceptuels et méthodologiques des deux équipes, pour faire aboutir des programmes appliqués ou fondamentaux dans le domaine de la génétique des organismes marins. Ces programmes concernent plus particulièrement le développement et l'utilisation des marqueurs génétiques fournis par les techniques de biologie moléculaire dans les programmes suivants: Chez les huîtres des genres Ostrea et Crassostrea : Le modèle prioritaire de l'URM sera les huîtres Crassostrea et Ostrea. Pour des raisons historiques, les recherches sur Ostrea sont plus avancées et donneront des résultats plus rapidement. 1-Sélection assistée par marqueurs chez Ostrea edulis et Crassostrea gigas...
Tipo: Text
Palavras-chave: Génétique; Marqueur génétique; Biologie moléculaire; Sélection génétique; Ressource génétique; Recrutement; Bivalvia; Crassostrea; Ostrea; Pisces; Dicentrarchus labrax; Génotypage.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00043/15459/12834.pdf

Tri d'alevins de loup et de dorade au stade juvénile (0,2 - 12 g)
Provedor de dados: 5
Autores: Lemarie, Gilles; Gasset, Eric.
The authors present the necessary to sort catfish and sea bream fries in order to limit cannibalism, to constitute homogeneous groups. In the same time they studied different sorters (bars sorter, grating sorter and the conception of an experimental sorter) and their effects on the juveniles (behaviour).  Introduction: In hatchery, early sorting of Sea Bass or Sea Bream fry after weaning can become necessary for several reasons: a) To obtain homogeneous batches thus simplifying growing management by better controlling: - Specific water flow for precise ranges of size or weight, - Food distribution granularity, - Daily feeding rate. b) To limit cannibalism which can become high when population dispersion is spread out. This dispersion greatly increases...
Tipo: Text
Palavras-chave: Pisces; Nursery ponds; Juvenile stage; Sea bream; Catfish; Fry; Pisces; Stade juvénile; Dorade; Loup; Alevin.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-1751.pdf

Role of steroid hormones and external factors in the control of pituitary gonadotropic activity of female European eel (Anguilla anguilla ).
Provedor de dados: 5
Autores: Leloup, H; Fontaine, Y; Dufour, S; Querat, B.
Gonadotropic activity is relatively low in the female freshwater (FW) eel (A. anguilla ): pituitary GTH was about 15 ng equivalent cGTH/mg fresh tissue. Plasma GTH was always less than 1 ng equivalent cGTH/ml and often undetectable (&lt; 0.2 ng equivalent cGTH/ml). Ovarian steroidogenesis in FW fish is similarly low; plasma concentration of both free testosterone (T) and free estradiol (E sub(2)) were less than 0.3 ng/ml as measured by RIA. Treatment with E sub(2) in FW fish caused a great increase in pituitary GTH, up to 1000 times control values, without changing plasma GTH. Stimulation of gonadotropic activity and ovarian development occur during the eel's migration to the Sargasso Sea. Adaptation to seawater (SW) caused a great increase of plasma E...
Tipo: Text
Palavras-chave: Anguilla anguilla; Anguillidae; Pisces; Migrations; Salinity; Environmental factors; Pituitary gland; Sexual reproduction; Ovaries; Sexual maturity; Steroids; Sex hormones; Facteurs externes; Steroids sexuels; Gonadotropine; Anguille.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1217.pdf

Intensive larval rearing trials of red drum (Sciaenops ocellata ) in Martinique (F.W.I.).
Provedor de dados: 5
Autores: Soletchnik, Patrick; Thouard, Emmanuel; Goyard, Emmanuel.
The red drum Sciaenops ocellata (Linneaus, 1766) was introduced in Martinique (F.W.I.) from the United States (Texas and Florida). Thirteen intensive larval rearing attempts, from 7 batches of imported eggs, have been conducted for two years.
Tipo: Text
Palavras-chave: Pisces; Growth; Larval development; Rearing; Hatching; Nutrition; Stocking density; Food conversion; Growth rate; Survival; Fingerlings; Fish; Eggs.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1434.pdf

Induction of ovulation and stimulation of spermation by LHRH or an LHRH analog associated or not with pimozide. Effects on some teleost fish.
Provedor de dados: 5
Autores: Billard, R; Weil, C; Barnabe, G.
Effectiveness of LHRH and one of its analogs (LHRH-A = D-Ala super(6) ethylamide) on induction of ovulation and stimulation of spermiation is reviewed here. LHRH was also combined with pimozide, an anti-dopaminergic agent, to try to cancel dopamine inhibition of gonatotropin (GtH) release. LHRH-A alone (50 mu g/kg) did not initiate ovulation but only oocyte maturation. When pimozide (10 mg/kg) and LHRH-A (50 mu g/kg) were combined, gonadotropic hormone secretion was significantly increased, causing ovulation and stimulating spermiation. This combination advanced ovulation in trout. Trout egg quality was markedly altered by the pimozide treatment; it remains to be tested in carp. In sea bass, LHRH-A was much more effective than LHRH, and ovulation was...
Tipo: Text
Palavras-chave: Salmonidae; Dicentrarchus labrax; Sparidae; Cyprinidae; Teleostei; Pisces; Inhibitors; Sex hormones; Sexual maturity; Spermatogenesis; Ovulation; Induced breeding; Sexual reproduction.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1218.pdf

Selection of finfish species (seabass) as candidates for aquaculture in French Polynesia
Provedor de dados: 5
Autores: Fuchs, Jacques; Gasset, Eric; Nedelec, Georges.
Species with a very high potential for aquaculture, allowing development projects on a short terms basis: the seabass originating from S.E. Asia. Species, potentially interesting but presenting some drawbacks, as difficulties to perform larval rearing or presenting pathological problem. Species considered as difficult to rear and not retained like Siganus argenteus , Siganidae or Caranx ignobilis , Carangidae. The future development of finfish in Polynesia is emphasized and a project of sea bass netcage culture in Polynesian lagoon is presented.
Tipo: Text
Palavras-chave: Siganus argenteus; Oreochromis; Coryphaenidae; Epinephelus microdon; Serranidae; Lates calcarifer; Centropomidae; Pisces; Fry; Fish larvae; Lagoons; Cage culture; Pellet feeds; Sexual reproduction; Spawning; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1474.pdf

Le Polymorphisme Electrophoretique : Un Moyen d'Etude des Populations.
Provedor de dados: 5
Autores: Pichot, Paul; Pichot, Yves.
The study of biochemical polymorphisms has been known for some years as an important development. The use of a technique called electrophoresis is at the origin of the progress realized in this science. The electrophoretic detection of genetical heterogeneity existing at the level of some biochemical characters of animal species presents an important theorical and practical interest.
Tipo: Text
Palavras-chave: Pisces; Overfishing; Stock assessment; Population genetics; Electrophoresis; Biochemical analysis; Analytical techniques.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/publication-1909.pdf

L'absorption intestinale des lipides chez la truite arc-en-ciel (Salmo gairdneri )
Provedor de dados: 5
Autores: Vernier, J; Sire, M.
Though the absorption of dietary lipids is much slower in S. gairdneri than in mammals, the mechanism does not differ fundamentally. The long chain fatty acids resulting from intraluminal hydrolysis are esterified by the epithelial cells and transferred as VLDL-like particles and chylomicrons to lymph. The size of granules depends on the nature of the ingested fatty acids. The intracellular stages of this lipoprotein synthesis are defined.
Tipo: Text
Palavras-chave: Salmonidae; Pisces; Lymph; Fatty acids; Nutrition; Lipoproteins; Lipids; Intestines; Food absorption; Metabolism.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1245.pdf

Pisciculture marine. Elements de prospective
Provedor de dados: 5
Autores: Gerard, Andre.
Introduction: To develop its 2005-2009 strategic plan, IFREMER made two prospective analysis studies in 2003: a thematic prospective analysis and a sectorial prospective analysis. The "aquafarming" sectorial prospective analysis, based primarily on an IFREMER idea, particularly brought to light the difference in nature of problems posed by the future evolution of shellfish farming, fish farming and other stockbreeding (pearl farming and shrimp farming). In addition, the prospective analyses made on an international scale by the FAO (2002, 2004) and the IFPRI (2003) emphasise that the development of aqua farming is the required condition for satisfying world demand of consumer aquatic products, given the foreseeable weak growth, indeed, the stagnation of...
Tipo: Text
Palavras-chave: Economic impact; Marine fish farming; France; Pisces; Technique Aquacole; Economie; Recherche Appliquee; Elevage; Pisciculture.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/2006/rapport-1506.pdf

Cycle ovarien du merlu, Merluccius merluccius , poisson a ponte fractionnee.
Provedor de dados: 5
Autores: Sarano, F.
The present work analyses and describes Merluccius merluccius ovarian cycle in the Bay of Biscay as an example of partial spawner. Three methods were employed: a macroscopic examination of about 10,000 ovaries -- a cytologic and histologic study -- an investigation of the size structure of the oocytes population of 63 ovaries. The author developed an original mathematical method for serial spawning demonstration. He demonstrates that hake is a partial spawner: a female usually rapidly spawns 4 or 5 times without ovaries rest. On this basis, he gives a new reference scale of the maturity stages of the ovarian cycle: after developing (II), ripe (III), running (IV), the partly spent ovary is named (II+); the repetitive sequence III-IV-II + characterize serial...
Tipo: Text
Palavras-chave: Pisces; Animal reproductive organs; Spawning; Ovaries; Sexual reproduction.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1790.pdf

Exposé sur la systématique des poissons
Provedor de dados: 5
Autores: Maurin, Claude.
La classification telle que allons l'exposer est tirée de la systématique moderne actuellement appliquée en France. Cette classification fait des poissons, aux sens strict, une super classe qui exclut les Agnathes. Ceux-ci, considérés comme un sous embranchement, comprennent la classe des Cyclostomes (lamproies).
Tipo: Text
Palavras-chave: Systématique; Pisces.
Ano: 1969
URL: http://archimer.ifremer.fr/doc/00419/53039/53976.pdf

Biological and economic factors in the selection of cultured fish species and the development of a bio-economic model
Provedor de dados: 5
Autores: Wu, R.
The selection of candidate species for mariculture is determined by a number of biological factors, e.g. foraging efficiency, growth efficiency, mortality, grow-out period and susceptibility to environmental fluctuations, disease and crowding, as well as economic factors e.g. the supply and price of fry, grow-out cost and price of adult. A computer model incorporating these major factors is being developed, to determine and compare the potential of different culture species.
Tipo: Text
Palavras-chave: Lates calcarifer; Epinephelus tauvina; Mylio macrocephalus; Pisces; Marine fish; Tolerance; Biology; Modelling; Economic models; Diseases; Mortality; Growth; Cultured organisms.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1488.pdf

Techniques de pêches
Provedor de dados: 5
Autores: Nedelec, Claude; Portier, Marcel; Prado, Joël.
This paper constitutes a practical hand-book prepared for the international stage of fishing technology (Nantes, 1978, May 31 to June 30). The authors give many data on the fishing technology, on the fishing gear classification, the behaviour of fish in relation with the fishing gear, the environomental effects on fishing gear and methods and on fish behaviour effects on the fishing methods. They explain the conception and the construction of the principal models of fishing gear, the conception and the equipment of fishing boats. They also give explications on the detection and the attraction of fish. They expound the organisation and the planification of a fishing technology service.
Tipo: Text
Palavras-chave: Pisces; Attracting techniques; Fishing vessels; Line fishing; Trawl nets; Seine nets; Lift nets; Gillnets; Fishing nets; Manuals; Fishing gear; Catching methods.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1980/publication-1951.pdf

Problems related to the lack of functional swimbladder in intensive rearing of the seabass Dicentrarchus labrax and the sea bream Sparus auratus .
Provedor de dados: 5
Autores: Chatain, Beatrice.
The primordial inflation of swimbladder normally occurs at a size of 4 to 5 mm in sea bream Sparus auratus and 5 to 6 mm in sea bass Dicentrarchus labrax . However, in intensive larval rearing conditions, lack of inflation is often observed and leads to the production of up to 80% of postlarvae whose swimbladder is not functional. They are, on the average, 20-30% smaller in weight than normal fry. Their survival rate can also be reduced by any kind of stress such as weaning, handling or hypoxic conditions. It is suggested that the selective mortality which affects the abnormal fish results both from a decrease in predatory efficiency and an increase in energetic needs.
Tipo: Text
Palavras-chave: Sparus aurata; Sparidae; Dicentrarchus labrax; Serranidae; Teleostei; Pisces; Genetic abnormalities; Hatching; Swim bladder; Growth; Larvae; Survival; Intensive culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1432.pdf

Status and potential of Australian Lates calcarifer culture.
Provedor de dados: 5
Autores: Mackinnon, M.
Lates calcarifer is distributed widely in northern Australia and is important to both commercial and recreational fisheries. There is the research on hatchery production of the species in 1984 and this work is continuing. Hatchery reared fish have been stocked to reservoirs in northern Queensland and have been used in experimental grow-out trials. Fish weaned onto formulated diets by the age of 25 days were reared to marketable size (&gt; 500 g) in freshwater tanks. Despite suboptimal water temperatures the fish reached market size by the age of twelve months. Taste panel analysis showed that the pellet fed fish were of good quality. The sensitivity of growth rates to water temperature was demonstrated in both grow-out trials and reservoir stockings.
Tipo: Text
Palavras-chave: Lates calcarifer; Pisces; Fresh water; Fingerlings; Hatcheries; Cage culture; Water temperature; Food conversion; Pellet feeds; Culture tanks; Diets; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1429.pdf

Comparaison de methodes de decomposition de distribution polymodales de frequences de longueurs en distributions unimodales successives (NORMSEP-MIX-Maximums successive maximums), application aux "bossus" (Pseudolithus elongatus ) du Congo
Provedor de dados: 5
Autores: Le Guen, J.c; Morizur, Yvon.
Length measurements on Pseudotolithus elongatus ' samples from the Congo were recorded in the 60s. Subsamples were collected in order to be "aged" by otoliths' reading. The size frequency distributions were splitted into successive unimodal distributions by different methods. Their results were compared. The results obtained from the "successive maximums' method" were similar to those from the "otoliths' reading." The programs NORMSEP and MIX gave results far more difficult to interpret biologically speaking in spite of their mathematical quality. Because many length frequency distributions of a cohort are symmetrical in nature, we suggest applying the "successive maximums' method"if there is no evidence of normality
Tipo: Text
Palavras-chave: Frequency analysis; Size distribution; Pseudotolithus elongatus; Sciaenidae; Pisces.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-2336.pdf

Poissons et invertébrés au large des côtes de France : Indicateurs issus des pêches scientifiques. Bilan 2002
Provedor de dados: 5
Autores: Bertrand, Jacques; Cochard, Marie-laure; Coppin, Franck; Le Pape, Olivier; Mahe, Jean-claude; Morin, Jocelyne; Poulard, Jean-charles; Rochet, Marie-joelle; Schlaich, Ivan; Souplet, Arnauld; Trenkel, Verena; Verin, Yves.
The scientist community, the fishing organisations and all involved parties show a growing interest in an integrated project management of the sea space exploited by fishing communities. A key to reach such a target is to make available reliable and precise scientist data on the different components of the fishing systems.  For about twenty years, and in its mission to support the development of an integrated management for a sustainable use of marine resources, Ifremer has been organising monitoring campaigns of fishery resources along the shores of France. These campaigns aim at providing abundance indicator on species of interest. They consequently provide an essential knowledge base to characterize and trace the status of exploited fish and...
Tipo: Text
Palavras-chave: Ecosystem; Indicating; Oceanographical campaign; Scientific research; Fishing halieutic; Fishing; English Channel; Bay of Biscay; France; Invertebrate; Pisces; Ecosystème; Indicateur; Campagne océanographique; Recherche scientifique; Pêche halieutique; Pêche; Mer du nord; Golfe de gascogne; Manche; France; Invertebrate; Pisces.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/rapport-1091.pdf

Further records of Auchenipteridae and Pimelodidae from Suriname (Pisces: Nematognathi)
Provedor de dados: 16
Autores: Mees, G.F.
Collections of freshwater-fishes, made in recent years in Suriname, have yielded four species of Auchenipteridae and ten species of Pimelodidae. Of the latter, two species, viz., Phractocephalus hemioliopterus and Pimelodus heteropleurus, are additions to the list given by Mees (1974: 237238), but the occurrence of Phractocephalus hemioliopterus in Suriname had already been mentioned by Geijskes (1973) and was thoroughly discussed by Boeseman (1983).
Tipo: Article / Letter to the editor
Palavras-chave: Pisces; Nematognathi; Auchenipteridae; Pimelodidae; Suriname; 42.81.
Ano: 1985
URL: http://www.repository.naturalis.nl/record/318673

Original watercolours donated by Cornelius Sittardus to Conrad Gesner, and published by Gesner in his (1558-1670) works on aquatic animals
Provedor de dados: 16
Autores: Holthuis, L.B.
Some original watercolours, that were donated by the sixteenth century physician Cornelius Sittardus, to Conrad Gesner, who published them in his "Historia Animalium Liber IV(1558), at present are kept in the National Museum of Natural History of Leiden. These watercolours are discussed here, as well as the other figures of the Sittardus collection published by Gesner.
Tipo: Article / Letter to the editor
Palavras-chave: Conrad Gesner; Cornelius Sittardus; Gysbertus Horstius; Cetacea; Pisces; Tunicata; Coelenterata; Mollusca; Echinodermata; Insecta; Crustacea Decapoda; Fungi; Original 16th century illustrations; 42.01.
Ano: 1996
URL: http://www.repository.naturalis.nl/record/317918

A precursor of the fishes of the Indian Archipelago. Part 1: Siluri
Provedor de dados: 16
Autores: Bleeker, P.; Oijen, M.J.P. van; Loots, G.M.P.; Limburg, F.J.G.
Tipo: Article / Letter to the editor
Palavras-chave: Pieter Bleeker; Ichthyologiae Archipelagi Indici Prodromus; Indian Archipelago; Pisces; Siluri; Siluroidei; Aspredinoidei; Loricaroidei; Heterobranchoidei; 42.81.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/314190

Redescubrimiento de Stegastes otophorus (Poey, 1860) (Pisces: Pomacentridae) en Cuba
Provedor de dados: 20
Autores: Varela, C.; Garrido, O.
The rediscovery of the damselfish Stegastes otophorus (Poey, 1860) in Cuba is recorded. The localization of six demes with information on the habitat, behaviour, and feeding habits of one of them is also given. The living coloration of a juvenil and one adult from two different demes are described. In order to facilitate comparisons, three juveniles and two adults from Cuba, are illustrated. The adoption of “diablo azul” as a common name is proposed.
Tipo: Journal Contribution
Palavras-chave: 1343; Aquarium fish; Pomacentridae; Cuba; Pisces; Natural history; Http://aims.fao.org/aos/agrovoc/c_43800; Http://aims.fao.org/aos/agrovoc/c_1997; Http://aims.fao.org/aos/agrovoc/c_13411; Http://aims.fao.org/aos/agrovoc/c_5088.
Ano: 2011
URL: http://hdl.handle.net/1834/4063

Odontesthes mirinensis, sp.n. um novo peixe-rei (Pisces, Atherinidae, Atherinopsinae) para o extremo sul do Brasil
Provedor de dados: 104
Autores: Bemvenuti,Marlise de Azevedo.
Odontesthes mirinensis, a new species of silverside, is described in coastal lagoons system of Rio Grande do Sul, Brazil. The new species is distinguished from other Odontesthes species by short snout and having 24-29 gill rakers on the lower branch of the first branchial arch. Osteological features (bones of the skull, axial skeleton and girdles) are included and discussed. Meristic and morphometric variables were analyzed separately, through multivariate procedures. Principal Component Analysis show that Odontesthes mirinensis, sp.n. does not exhibit significant geographic variation on body shape.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Atherinidae; Odontesthes; New species; Osteology.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000400017

Regime alimentar de Schizodon intermedius Garavello &amp;amp; Britski do rio Tibagi, Paraná, e sua relação com algumas características morfológicas do trato digestivo (Osteichthyes, Anostomidae)
Provedor de dados: 104
Autores: Yabe,Regina de Souza; Bennemann,Sirlei Terezinha.
In order to analyse the diet of Schizodon intermedius Garavello &amp;amp; Britski, 1990, captures were made every season during the period of April/1990 to February/1991, using gillnets of different mesh size at Sertanópolis, a region of Paraná State. An analysis of stomach fullness degree was made upon 76 individuals (including young ones). A sample of 20 adult specimens was chose to compare the morphology of the digestive tract with the diet found. It was concluded that S. intermedius is a grazer herbivore whose principal diet consists of leaves and stalks of two monocotyledonous plants: Poaceae and/or Cyperaceae. This species shows quanlitative, but not qualitative feeding seasonal variations. It was verified that intestinal quotient of the species is X...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Anostomidae; Schizodon intermedius; Food; Herbivore.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400019

Estudo ultra-estrutural do esôfago de Trichogenes longipinnis (Britski &amp;amp; Ortega) (Pisces, Siluriformes, Trichomicteridae)
Provedor de dados: 104
Autores: Pinheiro,Nadja Lima; Mendes,Rosa Maria M.; George,Luiz Ludovico; Sales,Armando.
Trichogenes longipinnis (Britski &amp;amp; Ortega, 1983) is a leather fish restricted to the rivers on the shore in the southeast of Brazil. In this work, the oesophagous structure is being showed. The oesophagous appears itself short, dorsally inclinated toward pericardium and ventrally covered by liver lobe. By electron microscopy we can observe a mucosa layer formed by stratified squamous epithelium and lamina propria with stratum compactum. The epithelium is composed by three types of cells: superficial squamous cells; mucous cells, similar to the globet cells and polyhedric cells. The stratification of this epithelium provides a complete basal layer of proliferation polyhedric cells. The cells in the intermediate region of the epithelium are also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Trichomicteridae; Trichogenes longipinnis; Oesophagous; Ultrastructure.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000400008

Atividade reprodutiva de Bairdiella ronchus (Cuvier) (Pisces, Sciaenidae) na Baía de Guaratuba, Paraná, Brasil
Provedor de dados: 104
Autores: Chaves,Paulo de T. da Cunha.
Bairdiella ronchus is one of the most common species of demersal ichthyofauna in Guaratuba Bay, south Brazil. However, this study reveals that is does not inhabits permanently the mangroove area. Individuals with more than 94mm total lenght leave mangroove area in late summer and early auntumn and returming in the spring. when they start ovarian veitellogenesis. During late spring and early summer, the oocytes are hydrated, and empty follicles can be found in the ovaries, indicating that this is the reproductive time for this species As other Sciaenidae. B. ronchus is a multiple spawner species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Sciaenidae; Bairdiella ronchus.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000400005

Estudo ultra-estrutural do estômago de Trichogenes longipinnis (Britski &amp;amp; Ortega) (Pisces, Siluriformes, Trichomicteridae)
Provedor de dados: 104
Autores: Pinheiro,Nadja Lima; Mendes,Rosa Maria M.; George,Luiz Ludovico; Chaves,Antonio Carlos P.
The observations made about the stomach of Trichogenes longipinnis (Britski &amp;amp; Ortega, 1983) showed a rounded organ which has in its dorsal side an accessory structure - a cul de sac - that comunicates with it. The distal part of this dorsal accessory presents characteristic of an organ that exercise respiratory functions: reduction in the thickness of the mucosa and arrangement of an intrincate continuous capilar net in close contact with the superficial cells of the epithelium. In this portion there are no glands in the lamina propria. The epithelium shows a superficial squamous cels; they are very slim, and sometimes, with the capillary endothelium form a single barrier between the organ lumen and the blood. Polyhedric cells are also present in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Trichomicteridae; Trichogenes longipinnis; Stomach; Ultrastructure.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000400009

Relação preliminar das espécies de peixes (Pisces, Elasmobranchii, Actinopterygii) ameaçadas no Brasil
Provedor de dados: 104
Autores: Rosa,Ricardo S; Menezes,Naércio A.
The Brazilian fish fauna is still poorly known with respect to its diversity and conservation status, particularly of freshwater species. Human activities and population growth are rapidly impacting this fauna to an unchecked extent, so that many fish species are presently threatened. Also, some areas have been so critically altered that their fish fauna can no longer be properly inventoried. There is an urgent need to evaluate the conservation status of Brazilian fish species, since none are presently listed as endangered by federal legislation. Based on a literature search and a survey directed to the Neotropical ichthyologists, we present an unofficial list including a total of 78 threatened fish species (12 elasmobranchs and 66 actinopterygians). Of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Elasmobranchii; Actinopterygii; Endangered species; Conservation; Brazil.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300015

Genetic variability in Oligosarcus paranensis (Teleostei: Characiformes) from the São Francisco river, Ivaí river basin – Paraná State, Brazil - doi: 10.4025/actascibiolsci.v35i3.14179
Provedor de dados: 3
Autores: Santos, Michele Rocha dos; Universidade Estadual de Maringá; Renesto, Erasmo; Universidade Estadual de Maringá.
The genetic variability of Oligosarcus paranensis was estimated from a population collected in São Francisco river, Prudentópolis county in Paraná State (Brazil) using the electrophoresis in starch gel technique. Eleven enzymatic systems were analyzed: Aspartate aminotransaminase (AAT; E. C. 2.6.1), Alcohol dehydrogenase (ADH; E. C. 1.1.1.1), Esterase (EST; E. C. 3.1.1.1), Glucose-6-phosphate isomerase (GPI; E. C. 5.3.1.9), Glycerol-3-Phosphate dehydrogenase (G3PDH; E. C. 1.1.1), Isocitrate dehydrogenase (IDH; E. C. 1.1.1.42), L-lactate dehydrogenase (LDH; E. C. 1.1.1.27), Malate dehydrogenase (MDH; E. C. 1.1.1.37 ), Malate dehydrogenase NADP (ME; E. C. 1.1.1.40), Phosphoglucomutase (PGM; E. C. 5.4.2.2) and Sorbitol dehydrogenase (SORB; E.C. 1.1.1.14)....
Palavras-chave: Allozyme; Genetic diversity; Heterozygosity; Polymorphism; Pisces.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14179

EDAD, CRECIMIENTO Y MORTALIDAD DE LUTJANUS PURPUREUS POEY, 1867 (PISCES: LUTJANIDAE) DE LA REGIÓN DE GUAYANAS
Provedor de dados: 50
Autores: González,Leo W.; Eslava,Nora; Silva,Carlos.
Se determinó la edad y se estimaron los parámetros de crecimiento y mortalidad del pargo colorado, Lutjanus purpureas Poey, 1867, con base en la lectura de 152 urohiales de 1561 individuos capturados durante 1988 de la región de Guayanas, comprendida entre los 06° - 10° LN y 54° - 61° LW, mediante la pesca exploratoria del B/l "Dr. Fridtjof Nansen". El recuento de zonas anuales en urohiales permitió establecer siete grupos de edad. La curva teórica de crecimiento en longitud se ajustó de acuerdo con los valores de los parámetros de crecimiento de von Bertalanffy: L∞ = 91.99 cm; K = 0.245 por año; t o = - 0.499 año. La mortalidad natural obtenida a través de la ecuación de Taylor fue igual a 0.255 por año y la mortalidad total calculada mediante el método...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edad; Crecimiento; Mortalidad; Pisces; Guayanas.
Ano: 1998
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97611998000100001

Feeding of Eigenmannia trilineata (Pisces, Sternopygidae) (Lopez &amp;amp; Castello, 1966), in the upper Paraná River floodplain, Brazil
Provedor de dados: 52
Autores: Peretti,Danielle; Andrian,Izabel de Fátima.
Studies were performed on various aspects related to the feeding of Eigenmannia trilineata in the upper Paraná River floodplain, from June 1993 to July 1994, at four places with different types of bottom and waters speed. A number of 279 fish had its stomachal contents analyzed by occurence and point methods in which it was applied on its frequencies the feeding index. Two hundred an sixty two specimens were utilized to the analysis of the feeding activity that it was based on frequency and middle degree of stomach repletion. For the morfological analyse utilized 12 individuals. It was verified fourteen items on species diet which it was found chiefly Chironomidae (Diptera) and detritus. Seasonal, area variations were verified in feeding activity and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding; Eigenmannia trilineata; Pisces; Paraná River.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100011

Primary culture of hepatic cells from Metynnis roosevelti (Pisces, Teleostei, Characidae)
Provedor de dados: 62
Autores: SALVO,Ligia Maria; MALUCELLI,Maria Ivette Carboni; RICHARTZ,Rosária Regina Tesoni B.; BACILA,Metry.
In order to achieve monolayers and adhesion in cell cultures of hepatocytes from the subtropical fish Metynnis roosevelti (Pisces, Teleostei, Characidae) three different methodologies were used: enzyme cell dissociation by means of a system containing trypsin and versene 0.25%; by means of bovine fetal serum and by the use of blood serum obtained from adult specimens of M. roosevelti. The cell medium used has been a modified F10-199 by the addition of 2 mM L-glutamine, 10 µg/mL insulin, 50 µg/mL fibronectin; and antibiotics. The best results in terms of cell dissociation as well as in terms of adhesion and confluence of the cells monolayer has been achieved by means of the enzymatic cell dissociation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Liver cells; Cell culture; Cells; Pisces; Metynnis roosevelti.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962000000500004