Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/14612
Título: Patterns of energy allocation to reproduction in three Amazonian fish species
Autor: dos Santos, Rodrigo N.
Amadio, Sidineia Aparecida
Ferreira, Efrem J.G.
Palavras-chave: Acestrorhynchus
Hoplosternum Littorale
Pisces
Pygocentrus Nattereri
Data do documento: 2010
Revista: Neotropical Ichthyology
É parte de: Volume 8, Número 1, Pags. 155-161
Abstract: The study considered the influence of the hydrological cycle and gonadal development on the accumulation and use of energy in three fish species from an Amazonian flooded area. Fishes were sampled over a 24 hour period at monthly intervals between July 2004 and June 2005 using gillnets of different mesh sizes. Body cavity fat and gonadosomatic indices were determined, as well as energy content of gonads and muscles. Amongst the studied species, different means of energy allocation for reproduction were found: Acestrorhynchus falcirostris allocate energy from body cavity fat to its gonads; Pygocentrus nattereri uses mainly energy accumulated in the muscles for the process of gonadal maturation; and Hoplosternum littorale uses energy accumulated in their muscles and body cavity fat for reproductive processes. It is quite clear that the flood pulse regulates the gain and use of the energy reserves in fishes from the Amazonian floodplain. © 2010 Sociedade Brasileira de Ictiologia.
DOI: 10.1590/S1679-62252010005000001
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