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Registros recuperados: 79
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A precursor of the fishes of the Indian Archipelago. Part 1: Siluri Naturalis
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
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Adaptations biochimiques intestinales chez la truite: Influence de l'aliment et de la salinite sur quelques proprietes membranaires ArchiMer
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
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Alimentation du merlan Merlangius merlangus L. en Mer Celtique ArchiMer
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
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Allozyme comparison of two populations of Rineloricaria (Siluriformes, Loricariidae) from the Ivaí River, upper Paraná River basin, Brazil Genet. Mol. Biol.
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
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Approche microbiologique de l'anchoitage. ArchiMer
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
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Aquaculture activities in Fiji ArchiMer
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
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Atividade reprodutiva de Bairdiella ronchus (Cuvier) (Pisces, Sciaenidae) na Baía de Guaratuba, Paraná, Brasil Zoologia
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
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Biodiversité et dynamique des peuplements ichtyiques de la mangrove de Guaratuba, Brésil ArchiMer
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
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Biological and economic factors in the selection of cultured fish species and the development of a bio-economic model ArchiMer
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
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Biologie du copepode Lernaeenicus sprattae Sowerby, 1806) et ses actions pathogenes sur les populations de sardines des cotes du Languedoc-Roussillon. ArchiMer
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
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Characteristics of one sea winter Atlantic salmon stock caught on Elorn river from 1974 to 1984 ArchiMer
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
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Colloque sur l'aquaculture - 22 - 24 octobre 1973 - Brest ArchiMer
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
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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 ArchiMer
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
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Comportement de poissons marins dans un champ electrique. Perspectives d'application a la peche. ArchiMer
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
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Constitution of aquacultural stocks: Genetic aspects. ArchiMer
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
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Cycle ovarien du merlu, Merluccius merluccius , poisson a ponte fractionnee. ArchiMer
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
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Définition d'un modèle d'élevage larvaire intensif pour la daurade Sparus auratus ArchiMer
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
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Développement et utilisation des marqueurs génétiques hypervariables chez les espèces marines. Rapport de synthèse 1995-1998 ArchiMer
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
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Dynamique des populations de poissons. ArchiMer
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
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EDAD, CRECIMIENTO Y MORTALIDAD DE LUTJANUS PURPUREUS POEY, 1867 (PISCES: LUTJANIDAE) DE LA REGIÓN DE GUAYANAS Boletín de Investigaciones
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...
Tipo: Journal article Palavras-chave: Edad; Crecimiento; Mortalidad; Pisces; Guayanas.
Ano: 1998 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97611998000100001
Registros recuperados: 79
Primeira ... 1234 ... Última
 

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