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Nuclear and mitochondrial diversification in two native California minnows: insights into taxonomic identity and regional phylogeography by Andres Aguilar; W. Joe Jones is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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Diversification of the California icthyofauna has been greatly influenced by a complex geomorphological history and past fluctuations in climate regimes. This complex history has resulted in areas of high endemism for a number of taxa. Here we present data on the two species in the genus Lavinia, the California roach (Lavinia symmetricus) and hitch (Lavinia exilicauda), that are widespread throughout the region. Individuals were sequenced at two mitochondrial DNA fragments and genotyped at eight microsatellite loci. Mitochondrial DNA indicated the presence to two highly divergent clades representing roach from the Gualala and Pit Rivers, which diverged from all other Lavinia $3-6 MYA. Support was also found for roach from the Navarro River, Tomales Bay region, the Red Hills region, and the Russian River-Clear Lake basin. We found no evidence for any geographical groupings of mtDNA haplotypes for roach and hitch from the Monterey Bay region and the Sacramento-San Joaquin River drainages. Additionally roach and hitch from these two areas could not be readily distinguished by mtDNA data. Analysis of microsatellite DNA recovered all groupings found in the mtDNA analysis and was able to

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Author

Andres Aguilar; W. Joe Jones

Publisher

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

Published

2009

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)