Spatiotemporal population genetics of the endangered Perote ground squirrel (Xerospermophilus perotensis) in a fragmented landscape
Por:
Ochoa A., Gasca J., Ceballos G.J., Eguiarte L.E.
Publicada:
1 ago 2012
Resumen:
The Perote ground squirrel (Xerospermophilus perotensis) is endemic to Mexico and is currently at risk of extinction. Its original range comprised 5,250 km(2) in an area known as the Oriental Basin, between the states of Puebla and Veracruz. By the end of the 20th century, however, extensive agricultural practices, overgrazing, and urbanization had already restricted suitable habitat for this species to only 16 localities. Temporal changes in genetic diversity and structure in this species were assessed from 34 museum specimens from 5 historical populations (1990-1992) and 44 individuals from 3 current populations (2007) using the mitochondrial (mtDNA) control region and 5 nuclear microsatellites. We observed a general trend (significant in some cases and nonsignificant in others) suggesting a decrease in genetic diversity within populations and an increase in genetic structure between them in recent years for both sets of markers. A Bayesian skyline reconstruction for the mtDNA sequen
Filiaciones:
Ochoa A.:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
Instituto de Ecología, Universidad Nacional Autnoma de Mxico, Apartado Postal 70-275, Mxico, Distrito Federal 04510, Mexico
School of Natural Resources and the Environment, University of Arizona, Tucson, AZ 85721, United States
Gasca J.:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
Instituto de Ecología, Universidad Nacional Autnoma de Mxico, Apartado Postal 70-275, Mxico, Distrito Federal 04510, Mexico
Ceballos G.J.:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
Instituto de Ecología, Universidad Nacional Autnoma de Mxico, Apartado Postal 70-275, Mxico, Distrito Federal 04510, Mexico
Eguiarte L.E.:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
Instituto de Ecología, Universidad Nacional Autnoma de Mxico, Apartado Postal 70-275, Mxico, Distrito Federal 04510, Mexico
Bronze
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