Abstract

ROJAS, Janeth Elizabeth; SOCA, Lázaro Alain  and  GARCIA, Giraldo Israel. Content of the digestive tract of 4 authoctonous species of fishes and their implications as boiregulators of mosquito larvae in Venezuela. Rev Cubana Med Trop [online]. 2005, vol.57, n.3, pp. 0-0. ISSN 1561-3054.

The content of the digestive tract of 4 authoctonous species of fishes that presented characteristics of larvivorous fishes was analyzed. It was found that 28 % of the caught specimens of Aequidens pulcher presented in their gastrointestinal content residues of larvae and pupae of mosquitoes combined with other food, and that 26 5 has only larvae and pupae. In  Aequidens coeruleopunctatus, 63 % of their content was larvae and pupae with other food, whereas 10 % had only larvae and pupae. 56 % of the Poecilia caucana specimens had larvae and pupae with other food, and 34 % only larvae and pupae. Poecilia reticulata contained larvae and pupae with other food in 62 % and 33 % only had larvae and pupae. These results show an effective bioregulator activity in these fishes identified as larvivorous under natural conditions.

Keywords : Biological methods; vector control; biological control; larvivorous fish.

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