Cellular and Molecular Life Sciences
Volume 32, Number 6, 704-706, DOI: 10.1007/BF01919844

Specialia

Hybridization in the mexican and 13-lined ground squirrels,Spermophilus mexicanus andSpermophilus tridecemlineatus

Earl G. Zimmerman and E. G. Cothran

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Abstract

Evidence of hybridization between the ground squirrels,Spermophilus tridecemlineatus andS. mexicanus is presented on the basis of chromosomal and protein data. The hybrids produced appear to be completely interfertile. Based on the evidence of hybridization and the recent reestablishment of contact between these two species, they are considered to be semispecies.
Supported by Faculty Research Grant No. 34925 from North Texas State University awarded toZimmerman.

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