Data/hora: 02/06/2024 11:05:17

Provedor de dados: | 3
País: | Brazil
Título: | Influence of cage farming on feeding and reproductive aspects of Pimelodus maculatus Lacépède, 1803 (Siluriformes: Pimelodidae) in the Chavantes reservoir, Brazil  - doi: 10.4025/actascibiolsci.v36i1.
Autores: | Brandão, Heleno; Universidade Estadual Paulista “Júlio de Mesquista Filho”; Santana, Julio Cesar de Oliveira; Universidade Estadual de Campinas; Ramos, Igor Paiva; Universidade Estadual Paulista “Júlio de Mesquista Filho”; Carvalho, Edmir Daniel; Universidade Estadual Paulista “Júlio de Mesquista Filho”.
Data: | 2013-09-04
Ano: | 2013
Palavras-chave: | 2.05.02.00-1 fish; Biology; Neotropical reservoir; Paranapanema river Ecologia.
Resumo: | This study evaluated the diet and reproductive aspects of the population of Pimelodus maculatus around net cage fish farming in order to assess the possible impacts of this activity. Monthly collections were performed from March 2008 to February 2009 on two populations: one close to the net cages (NC) and one from an area not influenced by these cages denominated the “reference site” (RS). Results of the Alimentary Index (AI), Gonadosomatic Index (GSI), reproductive potential and histological analysis were obtained for both NC and RS populations. The population from NC used leftover food (ration) that escapes from net cages as the main food item (99.3%). For the RS population, the detritus item was the more important food source (51.7%). The Detrended Correspondence Analysis (DCA) showed that the use of food resources was different between the two sites. The reproductive period of the species (indicated by the GSI) revealed that the population of the NC showed an extended reproductive period compared to RS. The histology of the ovaries indicated that the specimens in the NC were spawning capable. This study indicates that fish farming activities influence the species P. maculatus in the Chavantes reservoir by adding a new resource to the food web.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21039

10.4025/actascibiolsci.v36i1.21039

Editor: | Universidade Estadual De Maringá

Relação:

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21039/pdf

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21039/pdf_1

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http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/21039/6313

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http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/21039/6317

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/21039/6318

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/21039/6319

Formato:

application/pdf

application/pdf

Fonte:

Acta Scientiarum. Biological Sciences; v. 36, n. 1 (2014); 41-50

Acta Scientiarum. Biological Sciences; v. 36, n. 1 (2014); 41-50

1807-863X

1679-9283

Fonte:

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DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).