Clinal genetic variation and isolation by distance in the European eel Anguilla anguilla (L.)

Maes, G.E., and Volckaert, F.A.M. (2002) Clinal genetic variation and isolation by distance in the European eel Anguilla anguilla (L.). Biological Journal of the Linnean Society, 77 (4). pp. 509-521.

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Abstract

The genetic variability and structure of the European eel (Anguilla anguilla L.) in populations throughout Europe was reassessed using 15 allozymic loci, seven of which were polymorphic. Seven sites were sampled on a latitudinal gradient across the natural continental range, extending from southern France to southern Norway. Heterozygosity (H-e = 0.05) and level of polymorphism (P = 0.43) were comparable to other marine fish. Populations were poorly differentiated (G(ST) = 0.014, F-ST = 0.002), which is not surprising considering the high dispersal capability of the European eel. However, a significant geographical cline was detected at two alleles (IDH-1*100 and GPI-1*110), and genetic distances (D-CE) were concordant with geographical coastal distances. Mantel tests, pairwise F-ST's and multidimensional scaling analyses identify three distinct groups: Northern Europe, Western Europe and the Mediterranean Sea. We propose that the clinal genetic structure in the European eel may be due to (1) isolation by distance (as recently detected with microsatellites), (2) temporal reproductive separation, (3) post-larval selective forces, (4) contact between formerly separated groups or (5) some combination thereof.

Item ID: 34253
Item Type: Article (Research - C1)
ISSN: 0024-4066
Keywords: allozymes, Atlantic Ocean, genetic variation, marine organisms, population genetics, selection, spatial structure
Funders: Belgian Office of Scientific, Technical and Cultural Affairs (DWTC)
Projects and Grants: DWTC Project MN/DD/42
Date Deposited: 20 Aug 2014 04:33
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 30%
06 BIOLOGICAL SCIENCES > 0604 Genetics > 060411 Population, Ecological and Evolutionary Genetics @ 70%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 60%
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments @ 40%
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