Two Naturally Occurring Intergeneric Hybrid Snakes (Pituophis catenifer sayi × Pantherophis vulpinus; Lampropeltini, Squamata) from the Midwestern United States

Document Type

Article

Publication Date

6-2012

Publisher

Society for the Study of Amphibians and Reptiles

Source Publication

Journal of Herpetology

Source ISSN

0022-1511

Original Item ID

DOI: 10.1670/10-260

Abstract

Two intergeneric hybrid snakes (Pituophis catenifer sayi × Pantherophis vulpinus) are described from the midwestern United States; one collected in south central Iowa and the other from southeastern Minnesota. Both specimens are morphologically intermediate between the putative parental species P. c. sayi and P. vulpinus. Hybrid origin was verified by comparing DNA sequence data from the hybrids to the putative parental species. Both hybrid specimens possessed P. c. sayi mitochondrial DNA haplotypes. Examination of the nuclear gene Vimentin (intron 5) showed both specimens were heterozygous at most variable sites confirming their hybrid origin. These snakes represent only the second and third confirmed instances of naturally occurring intergeneric hybridization among squamate reptile species.

Comments

Journal of Herpetology, Vol. 46, No, 2 (June 2012): 257-262. DOI.

Tony Gamble was affiliated with the University of Minnesota at time of publication.

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