文章基本信息

标题：Daily Activity Pattern of Heleobia parchappii (Gastropoda: Hydrobiidae) under Laboratory Conditions
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作者：Nstor J. Cazzaniga ; Sandra M. Fiori
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2006
卷号：21
期号：1
页码：65-70
DOI：10.1080/02705060.2006.9664097
出版社：Taylor & Francis
摘要：Crawling, floating and burrowing abilities of the Argentine freshwater mudsnail, Heleobia parchappii (d'Orbigny 1835), were experimentally analyzed. Floating showed a cyclic circadian pattern, young snails using floatation more frequently than adults; males and females did not show a differential use of a floating escape strategy. Though males of freshwater prosobranchs are expected to be more active than females as an adaptive outcome of reproductive fitness, crawling velocity of Heleobia parchappii did not differ significantly between sexes, but males were effectively more active than females on an activity-time allocation basis.