Origin and expansion of the world's most widespread pinniped: Range-wide population genomics of the harbour seal (Phoca vitulina).

Mol Ecol · 2022 · PMC9306526 · PMID 35068013

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a clear trendno p-value reported

Intriguingly, within the North Atlantic, there was a clear trend of declining diversity along a longitudinal west–east cline from the USA and Canada to Europe.

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