Chirocentrodon bleekerianus (Teleostei: Clupeiformes: Pristigasteridae), a small predaceous herring with folded and distinctively oriented prey in stomach

Brazilian Journal of Biology

C. Sazima²  R. L. Moura¹  I. Sazima² 

[1] ,Universidade Estadual de Campinas Museu de História Natural Departamento de ZoologiaCampinas SP ,Brazil

关键词: Clupeiformes;    predaceous habits;    piscivory;    folding of prey;    convergence;    Clupeiformes;    hábitos predatórios;    piscivoria;    dobramento de presas;    convergência;   

DOI  :  10.1590/S1519-69842004000100018

来源: SciELO

【 摘 要 】

Predaceous fish-eating species of the order Clupeiformes have a large mouth with well-developed teeth, and reach the greatest sizes within their families (up to 90 cm). We found that the pristigasterid Chirocentrodon bleekerianus, a small clupeiform (about 10 cm) from the tropical SW Atlantic, is able to prey on proportionally large clupeoid fishes and caridean shrimps. Fish preys are folded in the stomach of this herring, their heads and tails pointing toward the predator's head. This distinctive orientation of fish prey is also recorded for some small to medium-sized, fish-eating species of the tropical freshwater order Characiformes with canine-like teeth similar to those found in C. bleekerianus.

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