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| Registros recuperados: 524 | |
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| Ohara,William M.; Marinho,Manoela M. F.. |
| ABSTRACT A new species of Moenkhausia is described from the upper rio Machado at Chapada dos Parecis, rio Madeira basin, Rondônia State, Brazil. Among congeners, the new species is similar to Moenkhausia chlorophthalma, M. cotinho , M. lineomaculata , M. plumbea, and M. petymbuaba by having dark blotches on the anterior portion of the body scales, which are absent in the remaining species of the genus. The new speciesdiffers from aforementioned species by possessing blue eyes in life, 15-18 branched anal-fin rays, and a well-defined, round caudal-peduncle spot that does not reach the upper and lower margins of the caudal peduncle and does not extend to the tip of the middle caudal-fin rays. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon basin; Fish; Moenkhausia cotinho; Ostariophysi; Taxonomy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100001 |
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| Diniz,Daniel G.; Varella,Jamille E.A.; Guimarães,Maria Danielle F.; Santos,Arthur F.L.; Fujimoto,Rodrigo Y.; Monfort,Karla C.F.; Pires,Marcus A.B.; Martins,Maurício L.; Eiras,Jorge C.. |
| The infection of the estuarine teleost fishes Mugil gaimardianus Desmarest, 1831 (Mugilidae), Arius phrygiatus Valenciennes, 1839 (Ariidae), Conodon nobilis Linnaeus, 1759 (Haemulidae), Cetengraulis edentulus Cuvier, 1829 (Engraulidae), and Anableps anableps Linnaeus, 1758 (Anablepidae) by praniza larvae of Gnathiidae (Crustacea, Isopoda) was studied in specimens fished off the Atlantic Ocean in Northeast of Pará State, near Bragança, Brazil. The highest infection prevalence value was found in Anableps anableps (42.3%) and the lowest in Conodon nobilis (9.1%). The mean intensity varied from 1 parasitein Conodon nobilis to 19.5 in Arius phrygiatus. A description of the larvae is provided. The morphology of the mouthparts is related to the blood sucking... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Parasites; Isopoda; Gnathiidae; Brazil. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000400007 |
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| CATELLA, A. C.. |
| Informações pesqueiras - conhecer para decidir; Os produtos da pesca profissional artesanal e da esportiva; Delimitação de estoques pesqueiros; O peixe mudou de mão; Novas mudanças no perfil da pesca; Pesque e solte - intencional e não intencional; Nível de exploração da pesca; Espécies subaproveitadas; Agregando valor ao pescado; Peixe de granja e peixe caipira; Conhecimento ecológico tradicional; Perfil do pescador profissional artesanal; Crise do setor turístico pesqueiro; Alternativas para o setor turístico pesqueiro; Novas instituições no cenário da pesca; Gestão participativa; Fatores externos à pesca; Fatores naturais e antrópicos; Escolha do modelo de desenvolvimento. |
| Tipo: Folhetos |
Palavras-chave: Mato Grosso do Sul; Brasil; Fishery; Production; Peixe; Pesca; Produção; Brazil; Pantanal; Fish. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/799005 |
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| Vandeputte, Marc; Dupont Nivet, M; Chavanne, H; Chatain, Beatrice. |
| Polygenic sex determination, although suspected in several species, is thought to be evolutionarily unstable and has been proven in very few cases. In the European sea bass, temperature is known to influence the sex ratio. We set up a factorial mating, producing 5.893 individuals from 253 full-sib families, all reared in a single batch to avoid any between-families environmental effects. The proportion of females in the offspring was 18.3%, with a large variation between families. Interpreting sex as a threshold trait, the heritability estimate was 0.62 +/- 0.12. The observed distribution of family sex ratios was in accordance with a polygenic model or with a four-sex-factors system with environmental variance and could not be explained by any genetic... |
| Tipo: Text |
Palavras-chave: Dicentrarchus labrax; Fish; Growth; Heritability; Sex ratio. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3526.pdf |
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| Amand, Marion; Pelletier, Dominique; Ferrari, Jocelyne; Kulbicki, Michel. |
| Marine Protected Areas (MPA) are often contemplated as a tool for the sustainable management of exploited resources and ecosystem conservation. This paper proposes an approach to establish a statistical diagnostic of the effects of MPAs on fish assemblages, and define corresponding ecological indicators. This requires choosing relevant variables (abundance, diversity, demographic parameters..) and appropriate statistical methods. The study was based on data from the Abore reef Reserve in New Caledonia. Two sets of methods: 1-inferential linear models (ANOVA, GLM): 2- Partial Least Squares (PLS) methods of regression, were used to test the effects of this MPA. PLS enabled us to test simultaneously within a model, density, species richness, biomass and mean... |
| Tipo: Text |
Palavras-chave: New Caledonia; PLS regression; Ecological indicators; Fishing impact; Coral reef; Fish; Marine Protected Areas. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-398.pdf |
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| BREDA,Leandra Schuastz; BELUSSO,Anne Caroline; NOGUEIRA,Barbara Arruda; CAMARGO,Guilherme Holub; MITTERER-DALTOÉ,Marina Leite. |
| Abstract The regular consumption of fish provides health gains for people, and its introduction in school meals is an important strategy to insert the habit of consuming this food by a population. Thus the objective of this study was to verify the acceptance of fish, presented in the form of hamburger, by children in municipal primary schools in the town of Pato Branco, Brazil, in which the school cooks had been trained to produce fish hamburgers. Acceptance was evaluated using a hedonic scale with 5 facial classifications (1 = disliked extremely to 5 = liked extremely). Students of both genders from 5 to 10 years of age (n = 142) were served the hamburgers for their midday meal, representing the protein portion of the meal. The results were analyzed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Hamburger; School meals; Acceptance; Children. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500094 |
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| Lisboa,Viviana; Barcarolli,Indianara F.; Sampaio,Luís A.; Bianchini,Adalto. |
| Survival and physiological parameters associated with metabolism and osmoregulation were evaluated in juveniles of the Lebranche mullet Mugil liza acclimated to different water salinities (5, 10, 20, 30, and 40‰) for 15 days. Room temperature (25ºC) and photoperiod (12L:12D) were fixed. Fish were fed twice-a-day with commercial diet (28% crude protein) until satiation. After acclimation, whole body oxygen consumption was measured and fish were euthanized and sampled for blood, gills, and liver. Whole body oxygen consumption and plasma osmolality did not change in the range of salinities tested. The isosmotic point was estimated as 412.7 mOsmol kg-1 (13.5‰). Gill Na+,K+-ATPase activity tended to be lower at 20 and 30‰, while liver glycogen content was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Glycogen; Na+; K+-ATPase; Osmoregulation; Oxygen consumption. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300591 |
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| Kumar, Abhishek; DDU Gorakhpur University - India; Prasad, ManiRam; DDU Gorakhpur University - India; Mishra, Diwakar; DDU Gorakhpur University - India; Srivastav, Sunil Kumar; DDU Gorakhpur University - India; Srivastav, Ajai Kumar; DDU Gorakhpur University - India. |
| The acute static renewal test of a botanical pesticide - azadirachtin for the freshwater catfish, Heteropneustes fossilis has been performed to determine the LC50 values at different exposure period. The LC50 values at various exposure periods are 173.06 mg L-1 for 24h; 80.69 mg L-1 for 48h; 58.57 mg L-1 for 72h and 52.35 mg L-1 for 96h. The upper confidence limits were 196.87, 86.91, 79.20 and 70.04 mg L-1 for 24, 48, 72 and 96 h and lower confidence limits were 154.01, 74.24, 37.33 and 33.83 mg L-1, respectively. These results indicate that azadirachtin exposure to the fish caused toxic effects. |
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Palavras-chave: Neem; Azadirachtin; LC50; Heteropneustes fossilis; Fish Animal Morphology and Physiology; Toxicology Neem azadirachtin; LC50; Heteropneustes fossilis; Fish. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9455 |
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| ManiRam,Prasad; Abhishek,Kumar; Diwakar,Mishra; Sunil K,Srivastav; Ajai K,Srivastav. |
| An acute toxicity test was performed by using a four-day static renewal test to determine the LC50 value of aqueous extract of Euphorbia royleana latex for the freshwater fsh, Heteropneustes fossilis. The LC50 values, their upper and lower confdence limits and slope functions were calculated. The LC50 values for aqueous extract of Euphorbia royleana latex at various exposure periods were 7.758 mg/L for 24 h, 5.847 mg/L for 48 h, 4.474 mg/L for 72 h and 3.090 mg/L for 96 h. The regression coeffcient showed that there was signifcant negative correlation between exposure time and different LC values. Hence, it is concluded that the concentration to produce toxicity of latex of Euphorbia royleana is comparable and close to the concentration to produce toxicity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Euphorbia royleana; Toxicity; LC50. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432010000100001 |
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| Rall,Vera Lúcia Mores; Iaria,Sebastião Timo; Heidtmann,Sandra; Pimenta,Fabiana Cristina; Gamba,Rosa Carvalho; Pedroso,Débora Midori Myaki. |
| Aeromonas has been described as an emergent foodborne pathogen of increasing importance. In this study, we report that 48% of 50 Pintado fish samples collected at the retail market of São Paulo city were positive for Aeromonas sp, as detected by the direct plating method. When the presence/absence method was used, the positivity was 42%. A. caviae was the most frequent species, followed by A. hydrophila and A. sobria. Production of cytotoxic enterotoxin, observed in suckling mouse assay, was detected in 67% of A. sobria strains, in 60% of A. hydrophila strains and in 40% of A. caviae strains. In vitro tests, performed with HEp-2 cells, showed that 88% of A. hydrophila, 27% of A. sobria and 13% of A. caviae strains were positive for this toxin. The in vivo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aeromonas sp; Virulence factors; Drug susceptibility; Fish. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000300015 |
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| Siqueira,Mayara S.; Leão,Taynara R. F.; Rodrigues,Robson A.; Farias,Karine N. N.; Silva,André L. N.; Marcondes,Sandriely F.; Veiga,Marcelo L.; Franco-Belussi,Lilian; Fernandes,Carlos E.. |
| ABSTRACT Pygocentrus nattereri is a carnivorous fish widely distributed in the Brazilian wetland and occupies different river strata. Based on the sexual maturity, the standard length (SL) has been used to categorize age and physiological attributes. However, hematological parameters and their relationship with age and growth features are unknow. Here, the aim was to evaluate the hematological profile and leukocyte data of juvenile and adult specimens, associating it with SL. Specimens of both sexes were weighted, and SL were measured for classify as juveniles (SL ≤16.0 cm) and adults (SL ≥16.1 cm). Blood was collected to perform the hemogram, for leukocyte quantification and ultrastructural descriptions. In general, hemogram values and leukocyte,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Hematology; Leukocyte ultrastructural morphology; Standard length. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000100216 |
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| SUAREZ, I. R.; NASCIMENTO, F. L.; CATELLA, A. C.. |
| Com o objetivo de estudar a alimentacao do tucunare (Cichla sp.) no Pantanal, foram realizadas cinco coletas entre novembro/1992 e junho/1994. Foram capturados 425 especimes, destes 207 apresentaram conteudo estomacal. Foram analisadas a Frequencia de Ocorrencia (FO), Volume Relativo (Vr) e "Indice Alimentar" (IA). Os peixes foram o principal item alimentar (FO=97,10%, Vr=96,45, IAi=99,81%), seguido de "restos vegetais", (FO=6,28%, Vr=2,49, IAi=16%) e camaroes (FO=1,93%, Vr=1,04, IAi=2%). Foram identificadas 21 especies de peixes no conteudo estomacal do "tucunare". Curimatella dorsalis foi a presa predominante em numero de individuos (18,75%) e em biomassa (28,81%). A familia mais representativa em biomassa foi Curimatidae (27,36%) e Cichlidae (26,93%);... |
| Tipo: Folhetos |
Palavras-chave: Cichla sp; Feeding habits; Wetland; Alimentação; Peixe; Tucunaré; Pantanal; Fish. |
| Ano: 2001 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/809807 |
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| CALHEIROS, D. F.; FERREIRA, C. J. A.. |
| No Pantanal, ocorre um fenomeno natural de deterioracao da qualidade da agua, denominado regionalmente como "Dequada", relacionado a decomposicao da grande massa de materia organica submersa no inicio do processo de inundacao. Sua magnitude e dependente das caracteristicas do pulso de inundacao, ou seja, caracteristicas da fase de seca anterior e do periodo de inundacao subsequente (volume e velocidade). De acordo com essa magnitude, pode provocar mortandade massiva de peixes (podendo alcancar a ordem de milhares de toneladas), docorrente da deplecao de oxigenio e do aumento da concentracao de gas carbonico, resultantes dos processos de oxidacao da materia organica, tanto nos campos inundados, quanto na coluna d'agua dos rios. Os peixes moribundos... |
| Tipo: Folhetos |
Palavras-chave: Dequada; Mortandade; Rio Paraguai; Mato Grosso do Sul; Brasil; Kills; Limnologia; Peixe; Brazil; Pantanal; Paraguay River; Fish; Limnology; Mortality. |
| Ano: 1996 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/792189 |
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| Registros recuperados: 524 | |
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