Evol Ecol Res 13: 91-104 (2011)     Full PDF if your library subscribes.

Spatial and temporal analysis of the genetic diversity and population structure of a freshwater ostracod from the high Andean plateau

Rodrigo Scheihing1,2, Leyla Cardenas3, Pedro Labarca1 and Roberto F. Nespolo3

1Centro de Estudios Científicos (CECS), Valdivia, Chile,  2Escuela de Graduados and  3Instituto de Ecología y Evolución, Universidad Austral de Chile, Valdivia, Chile

Correspondence: R. Scheihing, Centro de Estudios Científicos (CECS), Castilla 1469, Valdivia 5110246, Chile.
e-mail: rsch@cecs.cl


Background: The endorheic basins (basins with no outflow to another body of water) of the Andes Mountains contain several populations of small invertebrates with varying levels of isolation. Little is known about their genetic composition.

Hypothesis: Population isolation and changes in population size over time will increase genetic diversity.

Organisms: Three populations of the ostracod Limnocythere sp. with varying levels of isolation and population stability.

Field site: El Monumento Natural Salar de Surire, Chile, in the high Andean Plateau at 4200–4300 m above sea level.

Methods: We surveyed two molecular markers: the cytochrome oxidase I (COI) region and the internal transcribed spacer (ITS) region. With these data, we estimated the genetic diversity and spatial genetic structure during four consecutive years.

Conclusions: Genetic structure within populations did not differ among years, although there were differences among populations.

Keywords: population, molecular markers, gene flow, environmental stochasticity, ostracod, high Andean plateau.

IF you are connected using the IP of a subscribing institution (library, laboratory, etc.)
or through its VPN.


        © 2011 Rodrigo Scheihing. All EER articles are copyrighted by their authors. All authors endorse, permit and license Evolutionary Ecology Ltd. to grant its subscribing institutions/libraries the copying privileges specified below without additional consideration or payment to them or to Evolutionary Ecology, Ltd. These endorsements, in writing, are on file in the office of Evolutionary Ecology, Ltd. Consult authors for permission to use any portion of their work in derivative works, compilations or to distribute their work in any commercial manner.

       Subscribing institutions/libraries may grant individuals the privilege of making a single copy of an EER article for non-commercial educational or non-commercial research purposes. Subscribing institutions/libraries may also use articles for non-commercial educational purposes by making any number of copies for course packs or course reserve collections. Subscribing institutions/libraries may also loan single copies of articles to non-commercial libraries for educational purposes.

       All copies of abstracts and articles must preserve their copyright notice without modification.