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Larvae of migratory Characiformes species in an archipelago in the Lower Amazon River
Oliveira, Lucas Silva de; Cajado, Ruineris Almada; Zacardi, Diego Maia.
  • Oliveira, Lucas Silva de; Universidade Federal do Oeste do Pará. Instituto de Ciências e Tecnologia das Águas. Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores. Santarém. BR
  • Cajado, Ruineris Almada; Universidade Federal do Oeste do Pará. Instituto de Ciências e Tecnologia das Águas. Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores. Santarém. BR
  • Zacardi, Diego Maia; Universidade Federal do Oeste do Pará. Instituto de Ciências e Tecnologia das Águas. Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores. Santarém. BR
Acta sci., Biol. sci ; 43: e57331, 2021. map, ilus, tab, graf
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1461020
ABSTRACT
In the Amazon basin, most of the migratory Characiformes species represent an important fishing resource for local people. However, the lack of information about the main areas and periods of reproduction and the importance of certain environments for the maintenance of species may jeopardize the renewal of fish stocks. Thus, the aim was to examine the spatial and seasonal variation in the density of larvae of migratory Characiformes species in an archipelago in the Lower Amazon River and to assess the importance of this environment for the biological recruitment of the studied species. The capture of larvae was carried out in places close to restinga swamps, steep ruts,and inlet areas with a plankton net (300 μm) in monthly sampling from January to December 2013. An analysis of variance was used to verify differences in larval density between seasons and sampling months. A total of 30,997 larvae were captured and showed no significant differences in their distributions between habitats. However, a variationbetween the phases of the hydrological cycle was evident, in which the highest larval concentrations were observed during the flooding (17.72 larvae.10m-3) and the drought (1.33 larvae.10m-3). The study area has a great capacity to assist in the maintenance and renewal of regional fish stocks, as it is an important retention and nursery site for larvae of Characiformes that drift along the main channel of the Amazon River.
Assuntos


Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Caraciformes / Pesqueiros Limite: Animais Idioma: Inglês Revista: Acta sci., Biol. sci Ano de publicação: 2021 Tipo de documento: Artigo Instituição/País de afiliação: Universidade Federal do Oeste do Pará/BR

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Caraciformes / Pesqueiros Limite: Animais Idioma: Inglês Revista: Acta sci., Biol. sci Ano de publicação: 2021 Tipo de documento: Artigo Instituição/País de afiliação: Universidade Federal do Oeste do Pará/BR