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| Registros recuperados: 43 | |
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| Matos,Liliane S. de; Silva,João Otávio S.; Kasper,Daniele; Carvalho,Lucélia N.. |
| ABSTRACT Brycon falcatus is one of the most highly consumed species of fish within the region in the Teles Pires basin, and has great commercial importance in sport and professional artisanal fishing. The objective of this study was to analyze the presence and concentration of total mercury (THg) in the muscle, liver and gills of B. falcatus, and calculate the risk to human health of THg contamination from ingestion of the fish. THg concentrations were similar in the liver (0.076 mg kg-1) and muscle (0.052 mg kg-1), and higher than in the gills (0.009 mg kg-1). The levels of HgT present in B. falcatus tissues did not influence weight gain and nutritional status. Based on the condition factor, weight and length ratio and hepatosomatic index, it seems that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Condition factor; Hepatosomatic index; Matrinxã; Tapajós basin; Weight-length relationship. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100203 |
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| Moraes, Mariana Bissoli de; UNESP- Campus de Rio Claro; Braga, Francisco Manoel de Souza; UNESP- Campus de Rio Claro. |
| O presente trabalho teve por objetivo estudar a biologia e distribuição de Imparfinis minutus na microbacia do Ribeirão Grande (22º47´08´´S, 45º28´17´´W), serra da Mantiqueira oriental, nos períodos de julho e outubro de 2001 e janeiro e abril de 2002. Dentre as 37 espécies amostradas, I. minutus (Siluriformes, Heptapteridae) distribuiu-se desde o pediplano, até a planície do Vale do Paraíba, e esteve associada a ambientes pouco profundos, com substrato constituído principalmente por pedra, cascalho e matacão. O comprimento total dos indivíduos na população variou de 4,75 a 12,75 cm. A curva ajustada da relação peso-comprimento para a população foi p = 0,0052 C3,13. Os fatores de condição alométrico (Ka) e relativo (Kr) apresentaram tendências semelhantes,... |
| Tipo: Relação peso-comprimento; Aspectos reprodutivos e alimentares |
Palavras-chave: 2.04.00.00-4; 2.05.00.00-9 Alimentação; Reprodução; Fator de condição; Imparfinis minutus Zoologia Feeding; Reproduction; Condition factor; Imparfinis minutus. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6591 |
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| Sánchez, R.P.. |
| Through the analysis of the morphological changes ocurring in the process of growth, it was possible to identify three stages (primary juvenile: 25-75 mm; secondary juvenile: 76-160 mm; and juvenile preadult: 161-250 mm)during the first year of the species life. Regression equations for the different relations studied: body weight/body lenght, body surface/body lenght, body surface/body weight, and metabolic rate/body lenght, have been calculated for each stage. The variation of the number of gill rakers, mean distance between adjacent rakers and mean values of gill rakers lenght in reference to body growth was studied, and the relation between filtering area and body length was established. |
| Tipo: Journal Contribution |
Palavras-chave: Length-weight relationships; Condition factor; Gills; Juveniles; Mackerel fisheries; Gills; Http://aims.fao.org/aos/agrovoc/c_3262. |
| Ano: 1982 |
URL: http://hdl.handle.net/1834/2047 |
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| Santos,Luciano Neves dos; Gonzalez,Alejandra Filippo; Araújo,Francisco Gerson. |
| The diet of Cichla monoculus (Bloch & Schneider, 1801) in Lajes's Reservoir, a major impoundment in Rio de Janeiro State, Brazil, was assessed, from fishes collected in 1994,1996 and 1999/2000. Gut contents in individuals was analyzed by the index of relative importance (IRI) which deals with numerical, gravimetrical and frequency of occurrence. Cichla monoculus showed a strong piscivorous habits feeding on Cichlidae, Characidae and Pimelodidae, in decreasing order of importance, with a remarkable cannibalism on young-of-the-year. Others minor items in the diet were Macrobrachium sp. and Odonata. Changes in feeding composition varied with reservoir's zones and seasons, with higher diversity in Autumn and peaks of cannibalism in lower zone during... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichla; Trofic ecology; Diet; Reservoirs; Freshwater fish; Condition factor; Feeding habits. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500015 |
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| Albertoni,Edélti Faria; Palma-Silva,Cleber; Esteves,Francisco de Assis. |
| Macrobrachium acanthurus Wiegmann, 1836 is a Palaemonidae commonly found in Brazilian coastal environments. At Imboassica lagoon, located in the north of the State of Rio de Janeiro, it is found in two stages of its life cycle: as larvae and as reproductive adults. This work had as its goal the evaluation of adults distribution, estimating the weight/length relationship and the condition factor of these adults. After sampling in two regions of the lagoon, one interior and another closer to the ocean, we verified that females are found in a greater proportion close to the ocean, and males are found in greater number in the innermost region, amidst the aquatic macrophytes, suggesting that the fecundation takes place in this last area and the females then... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Palaemonidae; Macrobrachium acanthurus; Coastal lagoon; Weight/length relationship; Condition factor. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000600006 |
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| Angelescu, V.A.; Anganuzzi, A.. |
| The paper was developed in order to arrange the data gathered on this subject and to generate new hypotheses in connection with the trophic strategy of the northern stock of anchovy in the area between latitudes 35°-42°S. Such estimates were finally compared with the values of the gravimetric determinations of stomach contents- as converted to caloric values - of individuals grouped by total-length amd age classes, ecological areas, and seasons of the year. The set of results as obtained conforms the initial basis for developing Part IV of the Trophic Ecology of the Argentine anchovy as related to food consumption estimates, by stock biomass and annual classes, with back-calculations to age class 0, and for applying "regional patterns" that result from the... |
| Tipo: Journal Contribution |
Palavras-chave: Growth curves; Bioenergetics; Migrations; Length-weight relationships; Condition factor. |
| Ano: 1986 |
URL: http://hdl.handle.net/1834/2022 |
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| Mahe, Kelig; Bellamy, Elise; Delpech, Jean-paul; Lazard, Coline; Salaun, Michele; Verin, Yves; Coppin, Franck; Travers-trolet, Morgane. |
| Weight–Body Length relationships (WLR) of 45 fish species (37 Actinopterygii and eight Elasmobranchii) were investigated. A total of 31,167 individuals were caught and their biological parameters measured during the four quarters from 2013 to 2015, on five scientific surveys sampling the North-eastern Atlantic Ocean from the North Sea to the Bay of Biscay (ICES Divisions IVb, IVc, VIId, VIIe, VIIg, VIIh, VIIj, VIIIa and VIIIb). Among 45 tested species, all showed a significant correlation between total length (L) and total weight (W). The influence of sex on WLR was estimated for 39 species and presented a significant sexual dimorphism for 18 species. Condition factor (K) of females was always higher than for males. Moreover, a spatial effect on the WLR... |
| Tipo: Text |
Palavras-chave: Weight-length relationship; Condition factor; Bay of Biscay; Celtic Sea; English Channel; North Sea; Sexual dimorphism; Seasonality. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00363/47418/47513.pdf |
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| Laffargue, Pascal; Lagardere, Francoise; Rijnsdorp, Adriaan D.; Fillon, Alain; Amara, Rachid. |
| Les baies du golfe de Gascogne (France) hébergent des habitats où la sole, Solea solea, est le plus abondant des poissons plats. Cette étude vise à évaluer le fonctionnement des habitats pour leur rôle de nourriceries, en analysant la croissance et la condition des juvéniles de sole pendant leur première année. Les données de deux séries, 1999 et 2000, de chalutages mensuels sont comparées à celles acquises lors d'une expérience de 6 mois en mésocosme impliquant l'élevage de poissons originaires de la même nourricerie. La croissance observée est comparée à la croissance potentielle, en utilisant un modèle expérimental décrivant la croissance en fonction de la température. Les soles du groupe d'âge 0 capturées dans la nourricerie atteignent une taille... |
| Tipo: Text |
Palavras-chave: Solea solea; Flatfish; Mesocosm experiment; Condition factor; Growth; 0 group fish; Habitat quality; Coastal nursery. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2928.pdf |
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| Registros recuperados: 43 | |
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