NDLI: Population structure and genetic management of Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis)

Content Provider	Springer Nature Link
Author	Pritchard, V. L. Metcalf, J. L. Jones, K. Martin, A. P. Cowley, D. E.
Copyright Year	2008
Abstract	The Rio Grande cutthroat trout, Oncorhynchus clarkii virginalis, has declined precipitously over the past century, and currently exhibits a highly fragmented distribution within the Canadian, Pecos and Rio Grande river systems of the western United States. The relationships between populations in the three river drainages, and between O. c. virginalis and the closely related taxa O. c. pleuriticus and O. c. stomias, are not well understood. In order to guide management decisions for the subspecies, we investigated the distribution of variation at 12 microsatellite loci and two regions of the mitochondrial genome. We observed a high level of genetic differentiation between O. c. virginalis populations occupying different headwater streams (global Fst = 0.41). However, we found evidence for previous gene flow within the Rio Grande drainage, indicating that inter-population differentiation may have been exacerbated by the recent effects of population fragmentation. Despite large-scale anthropogenic movement of individuals from the Rio Grande into the Canadian and Pecos, the genetic signature of long-term evolutionary independence between the three drainages has been retained.
Starting Page	1209
Ending Page	1221
Page Count	13
File Format	PDF
ISSN	15660621
Journal	Conservation Genetics
Volume Number	10
Issue Number	5
e-ISSN	15729737
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-08-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Conservation genetics Management unit Oncorhynchus clarkii Microsatellite Salmonid Stocking Plant Sciences Evolutionary Biology Conservation Biology/Ecology Animal Anatomy / Morphology / Histology
Content Type	Text
Resource Type	Article
Subject	Genetics Ecology, Evolution, Behavior and Systematics

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