Karyotypes of sixteen populations of the Thomomys talpoides complex of pocket Gophers (Rodentia-Geomyidae) (original) (raw)

Abstract

Chromosome material of mitotic bone marrow cells from 59 individuals representing 16 populations of Thomomys talpoides was studied. These populations were found in southern Wyoming, Colorado, northern New Mexico and northern Arizona. A limited amount of intrapopulation variation in form but not number of chromosomes was found. Bight distinct karyotypes were observed. These can be characterized by the following diploid numbers and fundamental numbers of chromosomes: 40(70), 44(70), 56(70), 60(70), 58(76), 48(78), 56(78) and 46(82). Among the six populations with 48 chromosomes some interpopulation variation was noted. In several instances karyotype differences coincided with populations that co-exist without interbreeding.

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1. Department of Biology, New Mexico State University, Las Cruces
   Charles S. Thaeler Jr.

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1. Charles S. Thaeler Jr.

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Thaeler, C.S. Karyotypes of sixteen populations of the Thomomys talpoides complex of pocket Gophers (Rodentia-Geomyidae).Chromosoma 25, 172–183 (1968). https://doi.org/10.1007/BF00327176

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• Received: 01 July 1968
• Issue date: June 1968
• DOI: https://doi.org/10.1007/BF00327176

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