NDLI: Aquaculture and the spread of introduced mussel genes in British Columbia

Content Provider	Springer Nature Link
Author	Crego Prieto, V. Ardura, A. Juanes, F. Roca, A. Taylor, J. S. Garcia Vazquez, E.
Copyright Year	2015
Abstract	Aquaculture can promote the introduction of non-indigenous species (NIS) into wild marine environments. In addition, NIS aquaculture escapees may hybridize with closely-related native species introducing foreign alleles to their gene pool. To quantify the influence of mussel aquaculture on the native community in British Columbia we sampled mussels from fourteen locations on Vancouver Island. There are two native species in this region, M. trossulus and M. californianus, and two farmed NIS, Mytilus edulis and M. galloprovincialis, both originally from Europe. DNA was extracted from mussel tissue and the mitochondrial cytochrome c oxydase subunit 1 (COI) gene was sequenced. One nuclear locus that exhibits different alleles for M. edulis, M. galloprovincialis and M. trossulus (Glu-5′) was also characterized, using PCR, in order to identify heterozygotes. We found the proportion of NIS introgression depended primarily on farm density. Other habitat traits such as the degree of exposure to the open sea and, to a minor extent, salinity, contributed significantly to explain the distribution of introgressed individuals. Different habitat preference of NIS and native species, and marine currents, provide additional explanations for the distribution of alien and native species along Vancouver Island coasts. As a whole, our results suggest that native M. trossulus populations are more introgressed by M. galloprovincialis genes in open habitats.
Starting Page	2011
Ending Page	2026
Page Count	16
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	17
Issue Number	7
e-ISSN	15731464
Language	English
Publisher	Springer International Publishing
Publisher Date	2015-02-04
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Non-indigenous species Introgression Mytilus Mussel farming Habitat preference Genetic markers Ecology Freshwater & Marine Ecology Plant Sciences Developmental Biology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

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