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Comparación morfológica e histológica del tubo digestivo de Gambusia puncticulata y Girardinus metallicus (Cyprinodontiformes: Poeciliidae), peces utilizados en el control biológico de mosquitos

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Author(s): Jinnay Rodríguez Rodríguez | Efraín González | Natividad Hernández Contreras | Virginia Capó | Israel García

Journal: Revista Cubana de Medicina Tropical
ISSN 0375-0760

Volume: 56;
Issue: 1;
Start page: 73;
Date: 2004;
Original page

Keywords: CONTROL BIOLOGICO DE VECTORES | CONTROL DE MOSQUITOS | PECES | CONTENIDO DEL TRACTO DIGESTIVO | MORFOLOGIA | HISTOLOGIA | CUBA | : PEST CONTROL | BIOLOGICAL | MOSQUITO CONTROL | FISHES | DIGESTIVE TRACT CONTENTS | MORPHOLOGY | HISTOLOGY | CUBA

ABSTRACT
Se describió y comparó la morfología e histología del tubo digestivo de Gambusia puncticulata y Girardinus metallicus, peces utilizados en el control biológico de larvas de mosquitos en Cuba, y se relacionó con los hábitos alimentarios de cada especie. Gambusia puncticulata tiene un intestino corto y grueso, característico de las especies carnívoras y Girardinus metallicus posee un intestino alargado y delgado arrollado en forma de espiral como corresponde a los peces omnívoros. Se observó que el patrón histológico del intestino en ambas especies es muy simple, sin embargo, Gambusia puncticulata presentó gran cantidad de microvellosidades de tipo ramificadas, al compararla con Girardinus metallicus, lo que aumenta de esta forma el rendimiento digestivo de su relativamente más corto, tubo digestivo.The morphology and histology of the digestive tract of Gambusia puncticulata and Girardinus metallicus fishes used in the biological control of mosquito larvae in Cuba, were described and compared. They were related to the food habits of each species. Gambusia puncticulata has a short and thick intestine, which is characteristic of the carnivorous species, whereas Girardinus metallicus has an elongate and thin spiral rolled up intestine as it corresponds to the omnivorous fishes. It was observed that the histological pattern of the intestine in both species is very simple; however, Gambusia puncticulata presented a great number of ramified microhairiness on comparing it with Girardinus metallicus, which increases this way the digestive yield of its relatively shorter digestive tract.
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