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Genetic Differentiation, Temporal Stability, and the Absence of Isolation by Distance among Atlantic Herring Populations
Author(s) -
McPherson Arran A.,
O'Reilly Patrick T.,
Taggart Christopher T.
Publication year - 2004
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/02-106
Subject(s) - clupea , herring , atlantic herring , population , biology , isolation by distance , geography , fishery , genetic structure , genetic variation , fish <actinopterygii> , demography , sociology
The genetic variation among 17 spawning groups of Atlantic herring Clupea harengus was assessed at several temporal and spatial scales using nine tetranucleotide microsatellites. Pan‐Atlantic samples were drawn from the Scotian Shelf, the Celtic Sea, the Baltic Sea, and coastal Iceland. Significant differentiation was observed between northeastern and northwestern Atlantic herring ( F ST ∼ 0.065) and among northwestern Atlantic spawning groups (max F ST = 0.014) at the spatial scale of the Scotian Shelf. Geographic distance among Scotian Shelf collections did not explain the pattern of genetic differentiation observed (e.g., lack of isolation by distance). The temporal proximity of collections (as measured by days between collections) explained 30% of the pairwise population differentiation ( P = 0.0025). Allele frequencies of replicate samples and year‐class analyses demonstrate temporal stability at four locations.