Caracterización de la ictiofauna en la microcuenca del Río Quera mediante un catálogo para su preservación

Abstract

In addition to being suppliers and regulators of water, the micro watersheds contain great biodiversity, which are affected by human intervention in their different activities. This study focuses on the fish fauna of the Quera River micro-watershed located in the territory of the cantons of Pasaje and Chilla in the province of El Oro, due to the fact that in the sector there are outlawed means of fishing, which affect the ecosystem mainly to its species, it is for this reason that we proceed to make a record of fish present in the micro-watershed. For this purpose, 4 sample zones were identified within the middle basin, taking into account present population factors, altitude above sea level and ease of access to the site, recording 5 species of fish distributed in two orders and 3 families: Eretmobrycon brevirostris 32 individuals, Brycon atrocaudatus 24 individuals, Astyanax festae 5 individuals, Brycon dentex 1 individual, and Astroblepus frenatus 1 individual, obtaining a total record of 63 individuals. Of the species recorded only the species Brycon dentex was in adult state, while the others were recorded in communities of juvenile species.