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| Registros recuperados: 25 | |
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| SOARES,Leoneza; CASATTI,Lilian. |
| São descritas duas novas espécies de Sciaenidae da região Amazônica, pertencentes aos gêneros Pachyurus e Plagioscion. Pachyurus junki sp. n. difere das demais espécies congenéricas descritas por apresentar a seguinte combinação de caracteres: extremidade posterior da nadadeira pélvica distante do ânus; largura interorbital contida menos do que 6,0 vezes no comprimento da cabeça; segundo espinho da nadadeira anal contido mais do que 2,1 vezes no comprimento da cabeça; 29 a 33 raios na nadadeira dorsal; 11 a 16 séries de escamas acima da linha lateral; 11 a 16 séries de escamas abaixo da linha lateral e 58 a 68 escamas perfuradas na linha lateral. Plagioscion montei sp. n. difere das demais espécies do gênero por apresentar: ânus distante da nadadeira anal,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pachyurus; Plagioscion; Sciaenidae; Nova espécie; Bacia Amazônica. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672000000300499 |
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| Félix,Renata Triane da Silva; Severi,William; Santos,Athiê Jorge Guerra; El-Deir,Ana Carla Asfora; Soares,Maria Goretti; Evêncio Neto,Joaquim. |
| O presente estudo tem por objetivo caracterizar a organização dos ovócitos e os estádios maturacionais do ovário da pescada Plagioscion squamosissimus. As coletas foram realizadas bimestralmente no reservatório de Pedra, rio de Contas (BA), entre novembro de 2004 e setembro de 2006. As análises microscópicas foram realizadas através de cortes histológicos, corados com hematoxilina - eosina - floxina e mistura tricrômica de Gomori. Através da análise macro e microscópica, foram identificados cinco estádios maturacionais. A coloração das gônadas variou de acordo com o desenvolvimento gonadal. Para o desenvolvimento ovocitário, foram definidas seis fases: ovogônia e perinucleolar; vitelogênica e lipídica inicial; vitelogênica e lipídica intermediária;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitelogênese; Gônadas; Histologia; Pescada; Sciaenidae. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300012 |
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| Chaves,Paulo de Tarso C.; Vendel,Ana Lúcia. |
| Feeding habits of Stellifer rastrifer (Perciformes, Sciaenidae) at Guaratuba mangrove, Parana, Brazil, were studied from February 1996 to February 1997. It was observed that its diet was based on invertebrates, mainly Decapoda non-Brachyura and Polychaeta. In a smaller proportion there were plants, Copepoda, Gammaridea and Mollusca. The level of contribution of each food item changed according to the season and the individual size. Such plasticity in feeding behaviour was similar to that described to some fish populations from other estuaries, and could be an indicator of the high level of instability presented by this kind of ecosystem. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding habit; Stellifer rastrifer; Sciaenidae; Mangrove; Guaratuba; Parana. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000400006 |
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| Rodrigues,Rosa; Schneider,Horacio; Santos,Simôni; Vallinoto,Marcelo; Sain-Paul,Ulrich; Sampaio,Iracilda. |
| The acoupa weakfish (Cynoscion acoupa - Sciaenidae) is a marine species of croaker with estuarine-dependent behavior, found in the western Atlantic from Panama to Argentina. It is one of the most exploited food fish on the northern coast of Brazil. In this study, DNA sequences were determined from the entire control region (D-loop) of the mitochondrial genome of 297 individuals collected during seven different months between December 2003 and August 2005 on the northern coast of Brazil (Amapá and Pará). Genetic variability expressed by haplotype (h = 0,892) and nucleotide (pi = 0,003) diversities were low compared to other heavily exploited marine fish species from the western Atlantic and eastern Asia. AMOVA depicted a lack of genetic structuring among... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cynoscion acoupa; Acoupa weakfish; Sciaenidae; Low genetic diversity; Mitochondrial DNA; D-loop. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300015 |
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| Cheng,Yuanzhi; Wang,Rixin; Sun,Yuena; Xu,Tianjun. |
| To understand the phylogenetic position of Larimichthys polyactis within the family Sciaenidae and the phylogeny of this family, the organization of the mitochondrial genome of small yellow croaker was determined herein. The complete, 16,470 bp long, mitochondrial genome contains 37 mitochondrial genes (13 protein-coding, 2 ribosomal RNA and 22 transfer RNA genes), as well as a control region (CR), as in other bony fishes. Comparative analysis of initiation/termination codon usage in mitochondrial protein-coding genes of Percoidei species, indicated that COI in Sciaenidae entails an ATG/AGA codon usage different from other Percoidei fishes, where absence of a typical conserved domain or motif in the control regions is common. Partitioned Bayesian analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Larimichthys polyactis; Mitochondrial genome; Control region; Partitioned Bayesian analysis; Sciaenidae. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100027 |
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| Roberts Jr, D. |
| Circannual, diel, and lunal periodic mechanisms in naturally reproducing stocks of tropical and subtropical fishes are reviewed. Manipulations of biological clocks, used to control reproduction in captive broodstocks, are detailed. Experiments to induce controlled maturation and spawning in fishes either test efficacy of changing environmental conditions (regimes), or constant environmental conditions (controlled). Data have been generated in experimental/scientific studies, as well as applied research. Effects of controlled environmental regimes on serum steroids, gametogenesis, spawning, fry performance and egg quality are summarized for selected members of Centropomidae, Serranidae, and Sciaenidae. |
| Tipo: Text |
Palavras-chave: Sciaenidae; Serranidae; Centropomidae; Fish culture; Controlled conditions; Sexual maturity; Photoperiods; Fish eggs; Gametogenesis; Steroids; Animal reproductive organs; Brood stocks; Marine fish; Spawning; Sexual reproduction. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/1989/acte-1437.pdf |
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| 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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| Hubans, Barbara; Chouvelon, Tiphaine; Begout, Marie-laure; Biais, Gerard; Bustamante, Paco; Ducci, Lillian; Mornet, Francoise; Boiron, Anne; Coupeau, Yann; Spitz, Jerome. |
| In the north-eastern Atlantic, meagre (Argyrosomus regius) is one of the largest fish living on the shelf and this species has important commercial interest. Over the past two decades, large variations in meagre abundance have been observed with pluri-annual cycles but the factors involved in such variations are still unclear. Trophic interactions between meagre and other species (both prey and competitors) might be one explanatory variable of the observed variations in meagre recruitment and abundance. In the present study, we described the diet of commercial-size meagre in the Bay of Biscay from stomach content and stable isotope analyses, and explored its dietary ontogeny. We found that commercial-size meagres were mostly piscivorous with a diet... |
| Tipo: Text |
Palavras-chave: Diet; SIAR; Ontogeny; Marine top predators; Sciaenidae. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00384/49531/50028.pdf |
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| Gimenes,Michele de Faveri; Fugi,Rosemara; Isaac,Andréia; Silva,Marlene Rodrigues da. |
| We evaluated the factors that affect the food resource use by Plagioscion ternetzi using three approaches: spatial, seasonal, and ontogenetic changes. Fish were sampled between March 2000 and February 2001 and March 2003 and February 2004 in the Sinhá Mariana and Chacororé lagoons, wetlands of the Pantanal Matogrossense. Fish was the predominant food in the diet, but shrimps and insects have been also consumed. The diet of P. ternetzi was significantly different between lagoons, but no difference was detected between dry and flood periods. In Sinhá Mariana lagoon, the diet mainly consisted of Psectrogaster curviventris, in both periods. In the flood period in Chacororé lagoon, fish was the dominant food (especially Astyanax spp., Leporinus spp. and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chacororé lagoon; Diet; Plagioscion ternetzi; Sciaenidae; Sinhá Mariana lagoon. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100163 |
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| Becker,Alexssandro Geferson; Gonçalves,Jamile Fabbrin; Toledo,Jaderson dos Anjos; Burns,Marcelo D. M.; Garcia,Luciano de Oliveira; Vieira,João Paes; Baldisserotto,Bernardo. |
| The purpose of this study was to investigate Na+, Cl-, K+, Ca2+, and Mg2+ levels in the plasma of freshwater and marine/estuarine teleosts collected at different salinities (0 to 34) from the estuarine and freshwater portions of the São Gonçalo channel in Southern Brazil. Any relationship between plasma ion levels and salinity and the capacity of ionic regulation of teleosts found at three or more different salinities (Genidens barbus and Micropogonias furnieri) was also investigated. Results showed no relationship between plasma ion levels and salinity when considering all species together, but the two species collected from three or more different salinities showed a significant positive relationship between plasma ion levels and salinity, indicating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ariidae; Estuaries; Ionoregulation; Osmoregulation; Salinity; Sciaenidae. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400021 |
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| Aggrey-Fynn, J.; Sackey-Mensah, R.. |
| The diversity and relative species abundance of fisheries resources were studied from Winneba to Cape Coast on the central coast of Ghana during December 2007 to May 2009. Samples of organisms were collected at random from beach seine landings during the study period. The fishes were counted and identified to the family and species levels. Ecological indices such as Shannon-Wiener diversity index, equitability and Sørenson’s similarity index were used to analyse the data. Specimens from Winneba, Saltpond and Cape Coast comprise 56 species belonging to 30 families. Carangidae, Haemulidae, Clupeidae and Sciaenidae were some of the families, where key species occurred during the study. The relative abundance of key organisms in the beach seine landings... |
| Tipo: Report |
Palavras-chave: Fish; Biodiversity; Relative abundance; Coastal fisheries; Carangidae; Haemulidae; Sciaenidae; Marine resources. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5323 |
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| Registros recuperados: 25 | |
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