2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/27/2021 | 2:00 PM - 3:30 PM | CONTENIDO ESTOCAMAL Y DIFERENCIACION SEXUAL DE PECES DE LOS RIOS ATACAMES Y SUA, REGION DE CHOCO BIOGEOGRAFICO | Virtual Platform
CONTENIDO ESTOCAMAL Y DIFERENCIACION SEXUAL DE PECES DE LOS RIOS ATACAMES Y SUA, REGION DE CHOCO BIOGEOGRAFICO
Freshwater ecosystems are organized in trophic guild that channelize energy and matter troughout by producers and consumers. These trophic guilds rely on predator-prey interactions that have produced differences in feeding strategies among species and habitat segregation, known as the ecological niche. Fishes are predators and preys that occupied the bottom to the top of the trophic chain in aquatic systems. To recognize the ecological niche we studied stomach contents and gonads of native fishes from Atacames and Súa streams. The stomach content data was analyzed with bidimensional plots of occurrence and abundance frequencies. For sexual differentiation, we used the direct observation of gonads. We provide new records of the secondary sexual characteristics and trophic guilds of each species. In top of the trophic chain, we found A. blombergi (carnivorous), E. ecuadorensis and P. fria (two omnivorous), in the middle, R. altipinna (herbivorous) and in the bottom, P. gillii (detritivorous). Most species presented a low sexual dimorphism and high sexual dichromatism.
- Biological interactions
- Ecosystem
- Conservation
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Presenters/Authors
Fernando Vasquez
(), PONTIFICIA UNIVERSIDAD CATOLICA DEL ECUADOR , wfvg94@gmail.com;
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