Mitochondrial DNA evidence for deep genetic divergences in allopatric populations of the rocky intertidal isopod Ligia occidentalis from the eastern Pacific

Therese A Markow; Edward Pfeiler

doi:10.1016/j.ympev.2009.12.002

Mitochondrial DNA evidence for deep genetic divergences in allopatric populations of the rocky intertidal isopod Ligia occidentalis from the eastern Pacific

Mol Phylogenet Evol. 2010 Jul;56(1):468-73. doi: 10.1016/j.ympev.2009.12.002. Epub 2009 Dec 16.

Authors

Therese A Markow¹, Edward Pfeiler

Affiliation

¹ Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA.

PMID: 20006723
DOI: 10.1016/j.ympev.2009.12.002

Abstract

Nucleotide sequences from the cytochrome c oxidase subunit I (COI) gene were used to test for genetic differentiation in the rocky intertidal isopod crustacean, Ligia occidentalis (Ligiidae), from the eastern Pacific. Phylogenetic analyses showed that individuals of L. occidentalis from southern California, USA to Manzanillo, Colima, Mexico partitioned into 15 highly-divergent clades. Mean Kimura 2-parameter (K2P) genetic distances among clades ranged from 13.2% to 26.7%. These values are similar to interspecific genetic distances found in a wide variety of crustaceans, including Ligia spp., suggesting that the taxon L. occidentalis represents a complex of cryptic species.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Animals
Bayes Theorem
California
DNA, Mitochondrial / genetics*
Electron Transport Complex IV / genetics
Evolution, Molecular*
Gene Flow
Genetics, Population*
Haplotypes
Isopoda / classification*
Isopoda / genetics
Mexico
Phylogeny*
Sequence Analysis, DNA

Substances

DNA, Mitochondrial
Electron Transport Complex IV