期刊
AFRICAN ZOOLOGY
卷 46, 期 1, 页码 179-184出版社
TAYLOR & FRANCIS LTD
DOI: 10.3377/004.046.0109
关键词
freshwater fish; invasive alien fishes; estuary; RAMSAR site; diversity
类别
The Wilderness Lakes System incorporates a RAMSAR listed wetland. Previous ichthyological surveys reported three invasive freshwater fishes; Oreochromis mossambicus (Mozambique tilapia), Gambusia affinis (mosquitofish) and Micropterus salmo ides (large-mouth bass) from this system. To assess the status of these alien fishes, the fish assemblages in the lakes system were sampled with seine nets and fyke nets in 2009 and 2010. A total of 87 893 fish comprising 16 species were caught. In addition to confirming the persistence of O. mossambicus and G. affinis in the system, the current study also reports the presence of a new invader, Cyprinus carpio (common carp). M. salmoides were absent from 2009 and 2010 samples.
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