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| Mendes-Júnior,Raimundo Nonato Gomes; Sá-Oliveira,Júlio César; Vasconcelos,Huann Carllo Gentil; Costa-Campos,Carlos Eduardo; Araújo,Andrea Soares. |
| ABSTRACT In this study, the composition of the diet and the feeding activity of Electrophorus varii were evaluated. The influence of ontogeny and seasonality in these feeding parameters was also examined. Fish were collected in the Curiaú River Basin, Amazon, Brazil, from March 2005 to February 2006, during the rainy (January-June) and dry (July-December) seasons. Diet composition was characterized based on the analysis of stomach contents and feeding dynamics was assessed based on the Stomach Fullness Index (IR) calculated using stomach weight. Stomach content and RI data were grouped into four-cm size classes (40-80, 80-120, 120-160, and 160-200) and two seasonal periods (rainy and dry). The influence of ontogeny and seasonality in the diet was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amapá; Electric fish; Feeding Activity; Floodplain; Piscivory. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300202 |
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| 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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| Campos,Carlos Eduardo Costa; Sá-Oliveira,Júlio César. |
| Peixes limpadores removem ectoparasitas, tecido doente ou ferido, muco e escamas da superfície corporal de outros peixes, sendo portanto de fundamental importância para a manutenção do equilíbrio e da saúde dos peixes do ecossistema recifal. Na costa brasileira são registradas 24 espécies de peixes limpadores, das quais se destaca Elacatinus figaro, uma das espécies de limpadores mais especializada. Este estudo registrou a diversidade de clientes e o período de atividade de limpeza de Elacatinus figaro nos recifes de coral dos Parrachos de Muriú, Rio Grande do Norte. Foram registradas 21 espécies de clientes pertencentes a 11 famílias, das quais 15 espécies (68,4% do total de espécies) são ativas durante o dia, cinco (25,3%) têm atividade noturna e uma... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Góbio limpador; Gobiidae; Simbiose; Peixes recifais brasileiros; Comportamento de limpeza. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000100004 |
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