Title

The endemic insular and peninsular species Chaetodipus spinatus (Mammalia, Heteromyidae) breaks patterns for Baja California

Author

SERGIO TICUL ALVAREZ CASTAÑEDA

Robert Murphy

Access level

Open Access

Alternative identifier

doi: DOI:10.1371/journal.pone.0116146

Publication reference

URL/URL: http://journals.plos.org/plosone/

Dataset reference

doi: DOI:10.1371/journal.pone.0116146

Summary or description

"The Baja California peninsula is the second longest, most geographically isolated peninsula on Earth. Its physiography and the presence of many surrounding islands has facilitated studies of the underlying patterns and drivers of genetic structuring for a wide spectrum of organisms. Chaetodipus spinatus is endemic to the region and occurs on 12 associated islands, including 10 in the Gulf of California and two in the Pacific Ocean. This distribution makes it a model species for evaluating natural historical barriers. We test hypotheses associated with the relationship between the range of the species, patterns in other species, and its relationship to Pleistocene-Holocene climatic changes. We analyzed sequence data from mtDNA genes encoding cytochrome b (Cytb) and cytochrome c oxidase subunits I (COI) and III (COIII) in 26 populations including all 12 islands. The matrilineal genealogy, statistical parsimony network and Bayesian skyline plot indicated an origin of C. spinatus in the southern part of the peninsula. Our analyses detected several differences from the common pattern of peninsular animals: no mid-peninsula break exists, Isla Carmen hosts the most divergent population, the population on an ancient southern Midriff island does not differ from peninsular populations, and a mtDNA peninsular discordance occurs near Loreto."

Publish date

2014

Publication type

Article

Publication version

Published Version

Format

application/pdf

Source

Plos One

Language

English

Citation suggestion

Alvarez-Castañeda ST, Murphy RW (2014) The endemic insular and peninsular species Chaetodipus spinatus (Mammalia, Heteromyidae) breaks patterns for Baja California. PLoS ONE 9(12): e116146. doi:10.1371/journal.pone.0116146

Source repository

Repositorio Institucional CIBNOR

Downloads

241

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