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Mitochondrial DNA Variation and the Evolutionary History of Cryptic Gammarus fossarum Types by Jakob Müller is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The evolutionary history of the cryptic Gammarus fossarum species complex (Crustacea, Amphipoda) in Central Europe was approached by investigating the genetic variation in populations of a natural contact zone. Nucleotide sequence variation of a 395-bp segment of the mitochondrial 16S rRNA gene was compared to that of six nuclear allozyme loci. Three major mtDNA lineages were found, the eastern clade being consistent with the former allozyme type A. The two western clades (types B and C) were not distinguished previously. Strong sequence divergence and correlation with nuclear genetic isolation in syntopic populations, however, justifies the specific status of the three G. fossarum types. The common speciation event is believed to be very old (Miocene). The within-type mtDNA variation is probably molded by the ice ages, with type B populations being most affected. Moreover, the patch-like distribution of mtDNA type B lineages in an area near the contact zone corroborates the hypothesis of a recent colonization. 2000 Academic Press

Who reads Mitochondrial DNA Variation and the Evolutionary History of Cryptic Gammarus fossarum Types?

Author

Jakob Müller

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 1055-7903)

Published

2000

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)