Journal
LIMNOLOGY AND OCEANOGRAPHY
Volume 46, Issue 2, Pages 224-229Publisher
AMER SOC LIMNOLOGY OCEANOGRAPHY
DOI: 10.4319/lo.2001.46.2.0224
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The predatory cladoceran Cercopagis pengoi has extended its range over the past decade from the Ponto-Caspian basin into the Baltic Sea and the Laurentian Great Lakes. This study employs mitochondrial DNA (mtDNA) sequence analysis to elucidate the invasion corridors exploited during this range expansion. The Caspian and Black Sea populations of C. pengoi exhibit marked genetic divergence, enabling their discrimination as potential sources of the Baltic and Great Lakes populations. The limited mtDNA haplotype diversity detected in the Baltic populations suggests they were founded by a small number of colonists was apparently a result of the transfer of animals from the from the Black Sea. The colonization of North America Baltic Sea in ballast water.
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