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Registros recuperados: 16
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Alimentação e relações morfológicas com o aparelho digestivo do "curimbatá", Prochilodus lineatus (Valenciennes) (Osteichthyes, Prochilodontidae), de uma lagoa do Sul do Brasil Zoologia
Moraes,Marcos F.P.G. de; Barbola,Ivana F; Guedes,Élica A.C.
Some aspects of the feeding habits and the morphology of the digestive tracts of Prochilodus lineatus (Osteichthyes, Prochilo-dontidae) are investigated in Lagoa Dourada, Ponta Grossa, Paraná. A total of 102 specimens were caprured between April 1993 and April 1994. From each specimen, the following measurements were determined: total and standard length, weight, sex, length of abdominal cavity. Histological and anatomical analyses were performed on the buccal cavity, pharynx, stomach, and intestine. P. lineatus is a ilyophagous species with short and numerous incisiform teeth attached to the lips and no pharyngeal teeth. The gill rakers are thick, oblique, and laminate. This species has a "U" - ceacal -type of muscular stomach, with well developed mucosal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteichthyes; Prochilodus lineatus; Feeding habits; Digestive tract morphology.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100015
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Aspectos do desenvolvimento ovocitário no peixe-pulmonado Sul-americano, Lepidosiren paradoxa Fitzinger (Dipnoi) Zoologia
Chaves,Paulo de Tarso da Cunha.
Histological changes in the oocyte development of South American lungfish are described. During maturation, pre-vitellogenic and vitellogenic phases could be distinguished, and they are similar to those of teleost fishes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproduction; Amazonian; Lepidosiren paradoxa; Dipnoi; Osteichthyes.
Ano: 1992 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000100011
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Características morfológicas do miocárdio ventricular de Tambaqui (Colossoma macropomun; Characidae, Cuvier, 1818) Braz. J. Vet. Res. Anim. Sci.
Simões,Karina; Vicentini,Carlos Alberto; Orsi,Antonio Marcos; Cruz,Claudinei da.
O Colossoma macropomun, peixe teleósteo com hábito natatório intenso, apresentou ventrículo cardíaco com forma piramidal e miocárdio com estrutura mista, sendo formada por uma camada compacta externa e outra esponjosa interna. Esta estrutura bilaminar diferenciada, atualmente, tem sido correlacionada com o hábito natatório e com a morfologia ventricular.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morfologia; Miocárdio; Coração; Osteichthyes; Peixes.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962002000200003
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Comportamento reprodutivo do acará bandeira, Pterophyllum scalare Cuvier & Valenciennes (Osteichthyes, Cichlidae) Zoologia
Cacho,Maria do Socorro R.F; Yamamoto,Maria Emília; Chellappa,Sathyabama.
Acará bandeira, Pterophyllum scalare Cuvier & Valenciennes, 1831 is a Neotropical cichlid fish, which has not been studied under a scientific approach. The objective of this work was to identify and describe the reproductive behaviour involved in the various phases of its reproductive cycle, such as territorial disputes and its establishment, substrate selection for spawning, courtship and mating, selection of mate and parental care. Twenty males and ten females of the study species were observed in the laboratory, over a period of six consecutive months. Behaviour descriptions resulting from these observations were analysed and the results show that the reproductive males are very agressive in the initial phase of reproduction. Agressiveness is a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteichthyes; Cichlidae; Pterophyllum scalare.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300006
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Concentração iônica plasmática e biliar do "curimbatá" Prochilodus scrofa Steindachner (Osteichthyes, Characiformes) em relação aos estádios de repouso e maduro do ciclo reprodutivo Zoologia
Moreira,Renata Guimarães; Mimura,Olga Martins; Lima,Rossana L.V. Andrade; Bernardino,Geraldo.
Body fluid ionic content of fishes varies with ambient. Variations in the plasmatic ionic concentration have also been related with sex or maturation cycle, once that reproduction modifies metabolic processes. In fishes, the gallbladder is an important osmoregulatory organ. So, the present work has been focused on the relation of plasmatic and biliar electrolytes with sex and maturation cycle, of the teleost fish Prochilodus scrofa at the resting and mature stages of gonadal cycle. The animals (28 males and 30 females) were collected at Cachoeira de Emas (Pirassununga, São Paulo) and they were fasted for three days before the experiments. Deteminations of Na+, K+, Mg++, and Ca++ were made by spectophotometry and Cl- by microtitulation. Comparisons of ionic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteichthyes; Characiformes; Prochilodus scrofa; Bile; Plasma; Ionic content.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000100019
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Estádios evolutivos de tripanossomas de Hipostomus punctatus Valenciennes (Osteichthyes, Loricariidae) em infecção natural de Batracobdella gemmata Blanchard (Hirudinea, Glossiphoniidae) Zoologia
D'Agosto,Marta; Serra-Freire,Nicolau Maués da.
Seventeen leeches obtained from armoured catfish (Hypostomus punclatus Valenciennes, 1840) infected with Trypanosoma spp. were examined. It was observed the presence of tripomastigotes, epimastigotes and amastigotes forms as well as dividing forms in the proboscis and in the stomach, different from the ones found in the vertebrate host as regards the morfometric features and developing forms. The examination of the contents of rectum did not show tripanosomes. These facts seem to demonstrate that Batracobdella gemmata (Blanchard, 1900) is an invertebrate host of trypanosomes and the transmission is done by means of inoculation.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteichthyes; Loricariidae; Hirudinea; Glossiphoniidae; Tripanosomes.
Ano: 1993 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000300008
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Fecundidade e tipo de desova do tamuatá, Hoplosternum littorale Hancock (Osteichthyes, Siluriformes) no Rio Curiaú, Macapá, Amapá Zoologia
Sá-Oliveira,Júlio César; Chellappa,Sathyabama.
During June 1999 to June 2000 one hundred and forty seven females of Hoplosternum littorale Hancock, 1828 were collected from the Curiaú River, Macapá, Amapá, Brazil. The objective of this study was to determine the fecundity and the type of spawning of H. littorale. Analysis of the percentage distribution of the oocyte diameter softh e females, in five different stages of gonadal development, showed that this species is a total spawner. There were two different size graups of oocytes with synchranic development. The total fecundity varied from 9, 144 to 31, 698 mature oocytes.The fecundity, when related to total length and weight, showed that it increases with the enhance in total length and weight.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteichthyes; Siluriformes; Hoplosternum littorale; Fecundity; Typeof spawning.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400009
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Fish predation on brachyuran larvae and juveniles in the Pinheiros river, Guaratuba Bay, Paraná, Brazil Rev. Bras. Zool.
Costa,Paulo V.; Silva,Ubiratã A. T. da; Ventura,Robson; Ostrensky,Antonio; Angelo,Leandro.
Fish predation is thought to exert an important influence on the demographical dynamics of larvae and juveniles of estuarine brachyuran crabs but few studies have investigated this phenomenon in nature. In this study, fishes were captured during full moons (in January and February 2005), when many brachyuran species are known to release their larvae. Samples were carried out in the Pinheiros river, Guaratuba Bay, Paraná, Brazil. The stomach contents of collected fishes were surveyed to determine the species that are most likely to prey on brachyuran immature forms in this location. Two techniques were used to capture fishes: manual samplings, using a 5-mm mesh size net (1.8m depth), and bottom trawling with a 20-mm mesh size net. The collected specimens...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crab; Megalopae; Osteichthyes; Predator; Ucides cordatus; Zoeae.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000200005
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Influência de diferentes níveis de vitamina C na ração sobre parâmetros hematológicos de alevinos de Piaractus mesopotamicus Holmberg (Osteichthyes, Characidae) Zoologia
Martins,Maurício Laterça; Castajjnolli,Newton; Zuim,Sônia Maria Fontes; Urbinati,Elisabeth Criscuolo.
Haematological changes in ascorbic acid deficient fishes, observed by some authors, awoked the interest in the haematological response of pacu, Piaractus mesopotamicus. The present work studied the influence of different levels of ascorbic acid (vitamin C) in the ration on the haematological parameters of pacu. Fishes at the beginning of the experiment, presented average body weight 8.64±1.62g and 6.15±0.33cm standard length, were fed with diets containing 0. 50, 100 and 200mg ascorbic acid/kg dry ration. The present work was developed for a period of 24 weeks at the Fish Nutrition Laboratory of Aquaculture Center of Universidade Estadual Paulista (Unesp), Jaboticabal (São Paulo). The fishes were distributed by the completely randomized design in 20...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteichthyes; Characidae; Piaractus mesopotamicus; Haematology; Vitamin C; Fish.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300016
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Inventaire de la biodiversité marine dans le golfe normano-breton. Agnathes, Condrichtyens et Osteichtyens ArchiMer
Le Mao, Patrick.
This work is a compilation of faunal datas collected in the normano-breton Gulf, relating to Agnatha, Condrichthyes and Osteichthyes.
Tipo: Text Palavras-chave: Inventaire faunistique; Agnathes; Condrichtyens; Osteichtyens; Golfe normano-breton; Fauna list; Agnatha; Condrichthyes; Osteichthyes; Normano-breton gulf.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00002/11350/7920.pdf
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Morphological Diversity of the Ovaries of the Mexican Teleost Fishes International Journal of Morphology
Kobelkowsky,Abraham.
The morphological diversity of the ovaries from a total of 90 species of teleosts in the Mexican fauna was analyzed. Ovaries were classified according to the following characters: their number, symmetry, fusion grade, trajectory, cross section, and topographical location. The fusion of both left and right ovaries was the character showing most diversity, mainly in the Cyprinodontiformes and its tendency to the viviparity. However, the most notably character was the extravisceral development of the ovaries in the Pleuronectiformes, implying the forward orientation of the gonoduct and the forward position of the female genital opening. The urogenital system of a typical perciform, Bairdiella chrysoura is proposed as a morphological pattern of the Teleostei.
Tipo: Journal article Palavras-chave: Osteichthyes; Genital system; Gonads; Anatomy.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400017
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Polymorphisme intraspécifique chez le syngnathe aiguille, Siyngnathus acus (Osteichthyes, syngnathidae) OceanDocs
Ben Amor, M.M.; Ben Salem, M.; Capapé, C..
De juin 2002 à juin 2005, 267 syngnathes aiguilles, Syngnathus acus Linnaeus, 1758, ont été récoltés dans les eaux tunisiennes: 204 dans Bahiret El Biban (Tunisie méridionale), 24 dans la lagune Sud de Tunis et 39 devant La Goulette (Tunisie septentrionale). Trois types d'études ont été effectués à partir de l’ensemble des variables biométriques: la première repose sur l'analyse de la variance et de la moyenne à l'aide du test "F" de Ficher et du test "t" de Student; la deuxième est fondée sur l’analyse de la multivariance (ANOVA); et la troisième est fondée sur des analyses multidimensionnelles. La première et la deuxième études ont montré des différences significatives dans les variances et les moyennes pour la plupart des caractères examinés, dans les...
Tipo: Journal Contribution Palavras-chave: Biological polymorphism; Osteichthyes; Syngnathidae; Syngnathus acus; Http://aims.fao.org/aos/agrovoc/c_12985; Http://aims.fao.org/aos/agrovoc/c_41716; Http://aims.fao.org/aos/agrovoc/c_41719.
Ano: 2008 URL: http://hdl.handle.net/1834/4239
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Potencial atrator de peixes ósseos em recife artificial no litoral norte do estado do Rio de Janeiro, Brasil Zoologia
Gomes,Marcelo Paes; Novelli,Ronaldo; Faria,Vicente Vieira; Zalmon,Ilana Rosental.
Artificial reefs have become an important and popular resource enhancement technique by concentrating fishes and by increasing natural production of biological resources. In order to increase the necto-benthic colonization potencial, an artificial reef was installed on the northern coast of Rio de Janeiro (21º27'S, 41ºOO'W), an area with typically low relief bottom. Measuring nearly 1500 m², the reef consisted of four sets of different materials randomly disposed: concrete pipes (N = 12); tires structures (N = 20); and cement tanks (N = 7) and pre-made blocks (N = 4). ln order to determine the artificial reef effects on the teleost community, trammel nets were used for monthly sampling the reef site (RA) and on a control area (AC) with sandy bottom. During...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial reef; Osteichthyes; Community structure; Temporal variation; Northern coast of Rio de Janeiro.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300014
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Ray-finned fishes (Osteichthyes, Actinopterygii) from the type Maastrichtian, the Netherlands and Belgium Naturalis
Friedman, M..
Ray-finned fishes are a diverse, but understudied, component of the Maastrichtian marine fauna of the southeast Netherlands (Limburg) and northeast Belgium (Liège-Limburg). The most extensive reviews of fishes from these uppermost Cretaceous deposits were made in the early and mid-Twentieth Century, but little research on this important assemblage has been executed since. The present paper provides figures and brief descriptions of fishes from the Maastrichtian type area as an aid for field identification of fossil discoveries. A simple key to common Maastrichtian fish teeth from this area is also included. All convincing records of ray-finned fishes from the Maastrichtian of the Netherlands and Belgium, inclusive of the Mons Basin, are teleosts, and...
Tipo: Article / Letter to the editor Palavras-chave: Osteichthyes; Actinopterygii; Teleostei; Bony fish; Cretaceous; Maastrichtian; Type area; Europe; K/Pg extinction; 42.81.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/428932
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Sexual colour patterns in the sandperch Pseudopercis numida Ribeiro (Osteichthyes, Pinguipedidae) Zoologia
Paiva,Melquíades Pinto; Andrade,Magda Fernandes de.
This communication deals with the sexual colour patterns in the sandperch Pseudopercis numida Ribeiro, 1903, a benthonic fish of commercial importance, endemic to the Brazilian continental shelf, occurring off the coasts from Espírito Santo to Rio Grande do Sul States. The males have the head, the dorsal part of the body, and the pectoral and caudal fins blackishes, whereas the females have them brown-yellowishes. Such patterns are constant characters, not related to maturity or breeding seasons.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteichthyes; Pseudopercis numida; Sexual colours; Brazilian ichthyofauna.
Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000400022
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Sources de variation intra-populationelle de la morphologie des otolithes: asymétrie directionnelle et régime alimentaire ArchiMer
Mille, Tiphaine.
Otoliths are calcified structures located in Osteichthyes’ inner ear that are involved in audition and balance. Their morphology is used as an indicator of various ecological processes or properties. This application requires identifying the endogenous and exogenous factors that act simultaneously as sources of shape variation. This thesis aims at detecting and quantifying the relative contributions of directional asymmetry and diet to otolith shape variation at the intra-population level. Directional asymmetry between left and right otoliths was found in flat-fishes, the blind-side otolith being always longer and larger, whereas it was negligible in round-fishes. However, asymmetry amplitude never exceeded 18 %, which suggests evolutionary canalization of...
Tipo: Text Palavras-chave: Otolithes; Oreille interne; Ostéichtyens; Symétrie; Alimentation; Analyse de forme; Analyse de Fourier; Morphométrie géométrique; Otoliths; Inner ear; Osteichthyes; Symmetry; Diet composition; Shape analysis; Fourier analysis; Geometric morphometrics.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00344/45536/45108.pdf
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