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| Registros recuperados: 43 | |
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| ARIMORO,FRANCIS O; MEYE,JACOB A. |
| Preliminary investigation into some aspects of the biology of the palaemonid prawn, Macrobrachium dux (Lenz, 1910) in River Orogodo at Abavo, southern Nigeria was carried out between March and August 1995. The freshwater prawns were collected with properly baited cage traps and scooping with hand basket. The study revealed that the prawn species were widespread and abundant in the river. Abundance in terms of number and biomass was more during the wet season with a peak in August. Both adults and juveniles showed a progressive increase from late dry season to midrainy season (August). The malefemale ratio was 1:1.2. The fluctuation in the number and percentage of ovigerous females indicated that the prawn spawned during the midrainy season (JuneAugust).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth pattern; Gravid; Condition factor; River Orogodo; Nigeria. |
| Ano: 2007 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2007000200009 |
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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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| Oliveira, Elton Celton de; Auache-Filho, Alexandre Augusto; Damasio, Denis; Ghisi, Nédia de Castilhos; Michels-Souza, Maria Antônia. |
| The reproductive process promotes morphophysiological and behavioral changes in fish species throughout their life cycle. Its success is vital to define their resilience in the environment. This study aimed to evaluate the reproductive biology of the endemic fish species Astyanax bifasciatus in a tributary of the Lower Iguaçu River Basin, Paraná, Brazil. Fish were collected monthly at four sites along the Jirau Alto River in the city of Dois Vizinhos from October 2015 to September 2016. A standardized catch effort with gill nets and fish traps was used. In the laboratory, standard length and total weight were recorded. After anesthesia, the animals were sectioned to macroscopically determine the sex, sexual maturity stage, and presence of celomatic fat.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gonadossomatic; Auto-ecology; Condition factor; Generalist; Spawning. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/47720 |
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| Fiori,Leandro Fabrício; Alves,Gustavo Henrique Zaia; Hahn,Norma Segatti; Benedito,Evanilde. |
| Abstract This study investigated the diet of four characids [Hyphessobrycon eques (Steindachner, 1882), Odontostilbe pequira (Steindachner, 1882), Psellogrammus kennedyi (Eigenmann, 1903) and Serrapinnus calliurus (Boulenger, 1900) ] coexisting in two lagoons and checked for possible spatial differences and the influence on population fitness. The main goal was check if these species show better fitness according to the nutritional value of the food resource consumed. In this way, it is expected that the species show improved nutritional conditions (evidenced by the relative condition factor) when foraging for items of animal origin, and the reverse is expected when consuming items of plant origin and detritus. Sampling was conducted in August 2011. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fishes; Diet; Condition factor; Pantanal; Lagoons. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100206 |
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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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| Espínola,Luis Alberto; Júlio Junior,Horácio Ferreira; Benedito,Evanilde. |
| The allocation of assimilated energy may be influenced by seasonal changes, growth, and reproductive cycle of fish, food consumption and environmental conditions. The objective of this research was to evaluate the energetic variations of Cichla kelberi in the upper Paraná River floodplain, analyzing the caloric content in muscles, gonadosomatic index (GSI), and the condition factor between assessed systems, sex, and stage of gonadal maturation. The results obtained in the present study permit assuring that this is a species that efficiently converts the resources of the environment into energy. Although presenting higher condition factor in the environment where there is a greater ease in getting food (Paraná subsystem), the energy identified in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Condition factor; Energetic density; Gonadal maturation; Paraná and Baía Rivers. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200015 |
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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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| Souza,Jussara E. de; Fragoso-Moura,Evelise N.; Fenerich-Verani,Nelsy; Rocha,Odete; Verani,José R.. |
| The structure of Cichla kelberi population was characterized regarding the sex ratio, total length composition and some reproductive characteristics. The specimens were collected in two periods, from November 2002 to November 2003 and from December 2004 to May 2006. The sex ratio was significantly different than 1:1. The total length varied from 3.4 to 40.1 cm, with individuals in the shortest length classes occurring throughout the year, but with greater incidence in the warmer periods. Females and males reached similar lengths and there was no difference between the sexes regarding the length-weight relationship. The estimated values of condition factor were near the central value of 1.0 and decreased during the cooler months, coinciding with periods of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Condition factor; Fecundity; Length-weight relationship; Reproduction. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200007 |
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| Registros recuperados: 43 | |
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