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Chromosomal homology in southern Akodon

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Summary

Differential staining (G and C) of southern South AmericanAkodon are presented.A. olivaceus, A. longipilis andA. sanborni all have the same karyotype (2n=52, NF=58). A virtually identical band sequence is observed. This situation is interpreted using the canalization model of chromosomal evolution which stresses an optimum karyotype for each adaptive zone. Despite the high degree of conservation of the chromosome structures, the specific status of these species is supported by maintenance of distinctness when they occur in areas of sympatry.

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Author notes

  1. M. H. Gallardo

    Present address: Department of Biology, New Mexico State University, Box 3AF, 88003, Las Cruces, New Mexico, USA

Authors and Affiliations

  1. Instituto de Ecologia y Evolucion, Universidad Austral de Chile, Casilla 567, Valdivia, Chile

    M. H. Gallardo

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  1. M. H. Gallardo
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Additional information

The research was partially supported by Proyecto de Investigación I-78-86, Dirección de Investigación, Universidad Austral de Chile and Programa Especial de Citogenética, U. de Chile sede Norte, Santiago, Chile.

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Gallardo, M.H. Chromosomal homology in southern Akodon. Experientia 38, 1485–1487 (1982). https://doi.org/10.1007/BF01955785

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  • DOI: https://doi.org/10.1007/BF01955785

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