文章基本信息

标题：Upstream Mobility of the Asiatic Clam Corbicula fluminea : Identifying Potential Dispersal Agents a
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作者：Neal J. Voelz ; J Vaun McArthur ; Russell B. Rader 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：1998
卷号：13
期号：1
页码：39-45
DOI：10.1080/02705060.1998.9663589
出版社：Taylor & Francis
摘要：Based on studies conducted in 1987 and 1993, we have determined that the Asiatic clam, Corbicula fluminea, has moved upstream at least 1.2 km/year in a southeastern U.S. blackwater stream. Since these studies were done in a protected area (the Savannah River Site, South Carolina), our data suggest that this was a process unaided by humans. In addition, the upstream movement has been halted by a large, permanent wetland and two culverts. Because the Asiatic clam has not colonized headwater areas, where several wetlands exist, this precludes the aided movement of C. fluminea by waterfowl. It is possible that fish are partially responsible for dispersing C. fluminea, at least for longer distances. We suggest that unassisted upstream movements may also be an important dispersal mechanism for this species.