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Conservation genetic studies of the endangered Cape Fear Shiner, Notropis mekistocholas (Teleostei: Cyprinidae)


Burridge, CP and Gold, JR, Conservation genetic studies of the endangered Cape Fear Shiner, Notropis mekistocholas (Teleostei: Cyprinidae), Conservation Genetics, 4, (2) pp. 219-225. ISSN 1566-0621 (2003) [Refereed Article]

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The original publication is available at - Copyright 2003 Kluwer Academic Publishers.

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DOI: doi:10.1023/A:1023390606975


Genetic variation at ten microsatellite loci and one anonymous-nuclear locus was assayed for three geographic samples of the critically endangered North American cyprinid Notropis mekistocholas (Cape Fear shiner). Despite low abundance of this species, there was little suggestion of small population effects; allele diversity and hetero- zygosity were relatively high, FIS values within samples were non-significant, and genotypes were distributed in frequencies according to Hardy-Weinberg expectations. Genetic divergence among samples was minimal despite the presence of dams, constructed in the early 1900s, that separate the sample sites. This suggests that recent gene flow has been sufficient to inhibit genetic divergence or that gene flow has been reduced but there has been insufficient time for genetic divergence to develop. Tests of heterozygosity excess were non-significant, suggesting that N. mekistocholas in the localities sampled have not undergone recent reductions in effective population size. Future studies employing larger sample sizes to provide more robust tests of population structure and temporally separated samples to estimate contemporaneous Nare warranted.

Item Details

Item Type:Refereed Article
Keywords: Cape Fear shiner, conservation genetics, Notropis mekistocholas
Research Division:Biological Sciences
Research Group:Genetics
Research Field:Genetics not elsewhere classified
Objective Division:Environmental Management
Objective Group:Fresh, ground and surface water systems and management
Objective Field:Fresh, ground and surface water biodiversity
UTAS Author:Burridge, CP (Associate Professor Christopher Burridge)
ID Code:59475
Year Published:2003
Web of Science® Times Cited:14
Deposited By:Zoology
Deposited On:2009-12-02
Last Modified:2009-12-09
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