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标题：Estructura trófica del ensamblaje íctico de los lagos de Yahuarcaca, Amazonas, Colombia
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作者：Edgar Francisco Prieto Piraquive ; Santiago Roberto Duque ; Alexander Sabogal González 等
期刊名称：Mundo Amazonico
印刷版ISSN：2145-5082
出版年度：2015
卷号：6
期号：2
语种：Spanish
出版社：Universidad Nacional de Colombia
摘要：The aim of this research is to establish the diet and trophic changes of the predominant icthyofauna in a varzea lake of the Colombian Amazon, during high water and low water seasons. The collections were made during high water and low water seasons in 2010, employing gill nets, bottom trawl net and landing nets . Stomach contents of 875 specimens from 66 species (30 for high water and 48 for low water) were analyzed; species diet similarity was determined through the Bray-Curtis Index; the trophic niche extent was determined using Levin’s Index. There were changes in the compositions of the trophic guilds in both seasons (X 2 =323.95, P=<0.001). Six trophic guilds for high water season and five for low water season were found. Changes in diet composition were recorded in both seasons, which appear to correspond to resource offer. For future research, it is recommended to increase the number of samples for stomach contents and to widen the sampling to the other season of the hydrological cycle in order to determine with greater precision the trophic variation.
关键词：trophic ecology;fish communities;Yahuarcaca lakes;flood cycles;ecología trófica;comunidades de peces;lagos de Yahuarcaca;ciclo de inundación