Feeding of Pellona flavipinnis (Clupeiformes, Pristigasteridae)in a Central Amazonian floodplain Dieta de Pellona flavipinnis (Clupeiformes, Pristigasteridae) em planície alagada da Amazônia Central

The feeding habits of Pellona flavipinnis (Valenciennes, 1836) at Catalão, a floodplain area on the Brazilian Central Amazon was studied. Data was obtained during three hydrological cycles, between September 1999 and September 2003. Diet composition, daily and seasonal variation in the feeding activ...

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Bibliographic Details
Main Authors: Sandra S. Moreira-Hara, Jansen A. S. Zuanon, Sidineia A. Amadio
Format: Article
Language:English
Published: Fundação Zoobotânica do Rio Grande do Sul 2009-06-01
Series:Iheringia: Série Zoologia
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Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000200006
Description
Summary:The feeding habits of Pellona flavipinnis (Valenciennes, 1836) at Catalão, a floodplain area on the Brazilian Central Amazon was studied. Data was obtained during three hydrological cycles, between September 1999 and September 2003. Diet composition, daily and seasonal variation in the feeding activity and the relationship between predator's size and its prey were analyzed. Almost 80% of the food consumed has autochthonous origin and diet was composed basically by insects and fish. Juvenile fish predominated in the stomach contents of all size classes but there was no significant relationship between predator's size and its prey. Pellona flavipinnis may be considered a carnivorous species which feeds mainly on juvenile (young-of-the-year) specimens of other fish. More intense feeding activity occurred at night and in the high water period.<br>Os hábitos alimentares de Pellona flavipinnis (Valenciennes, 1836) de uma área de várzea na Amazônia Central, Catalão, foram estudados. Foram utilizados dados referentes a três ciclos hidrológicos, entre setembro de 1999 e setembro de 2003. Foram analisados a dieta, a atividade alimentar diária e sazonal e a relação entre o comprimento da presa e o do predador. Cerca de 80% dos alimentos consumidos eram de origem autóctone e a dieta composta basicamente de insetos e peixes. Peixes juvenis predominaram nos conteúdos estomacais de exemplares de todas as classes de tamanho, mas não houve relação significativa entre o tamanho do predador e o das presas consumidas. Pellona flavipinnis pode ser considerada uma espécie carnívora que se alimenta principalmente de indivíduos juvenis de outras espécies de peixes. A atividade alimentar foi maior durante a noite e no período da cheia.
ISSN:0073-4721
1678-4766