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[委内瑞拉乌纳雷湖热带鱼布氏吻鰕虎鱼(鱼类:鰕虎鱼科)的食性]

[Diet of the tropical fish Gobioides broussonnetii (Pisces: Gobiidae) at Laguna de Unare, Venezuela].

作者信息

Rodríguez José, Villamizar Estrella

机构信息

Departamento de Biología, Facultad de Ciencias y Tecnología, Apartado 2005, Universidad de Carabobo, Valencia, Venezuela.

出版信息

Rev Biol Trop. 2006 Dec;54(4):1093-8.

Abstract

Unare Lagoon is one of the most important fishery coastal ecosystems in Venezuela. For the past 10 years, changes in its hydrological regime have affected the physiochemical characteristics of the water with important consequences on its faunal composition and abundance. An example of such variation is the abundant presence ofa fish species, Gobioides broussonnetii, recently registered in this ecosystem. The ecology of this species must be studied to identify new ecological processes occurring in the lagoon. Detritus is the most important component of the G. broussonnetii diet, followed by plant and animal items. The species is a primary detritivorous consumer and this may be associated with its activity pattern (morning): It may be an occasional visitor because it was not captured regularly in the monthly samplings.

摘要

乌纳雷泻湖是委内瑞拉最重要的渔业沿海生态系统之一。在过去十年中,其水文状况的变化影响了水体的理化特性,对其动物群落的组成和丰度产生了重要影响。这种变化的一个例子是最近在这个生态系统中发现的一种鱼类——布氏异齿鳚大量出现。必须对该物种的生态进行研究,以确定泻湖中正在发生的新生态过程。碎屑是布氏异齿鳚饮食中最重要的组成部分,其次是植物和动物类食物。该物种是主要的碎屑食性消费者,这可能与其活动模式(早晨)有关:它可能是偶尔的访客,因为在每月的采样中没有经常捕获到它。

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