Evidence of Intermediate and Asymmetrical Behavioral Isolation Between Orangethroat and Orangebelly darters (Teleostei:Percidae)

TAMRA C. MENDELSON

doi:10.1674/0003-0031(2003)150[0343:EOIAAB]2.0.CO;2

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TAMRA C. MENDELSON^1,*

¹Department of Biology, University of Maryland, College Park, 20742

^*Telephone (301)405-8303; email:tm178@umail.umd.edu

Abstract

Etheostoma spectabile pulchellum (Orangethroat darter) and E. radiosum paludosum (Orangebelly darter) inhabit, but do not co-occur, in the Washita River, Oklahoma. Behavioral isolation between these two allopatric taxa has evolved to an intermediate degree that is consistent with their genetic distance. Behavioral isolation is asymmetric. Mating was commonly observed between E. r. paludosum females and E. s. pulchellum males, but only rarely between E. r. paludosum males and E. s. pulchellum females.

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TAMRA C. MENDELSON "Evidence of Intermediate and Asymmetrical Behavioral Isolation Between Orangethroat and Orangebelly darters (Teleostei:Percidae)," The American Midland Naturalist 150(2), 343-347, (1 October 2003). https://doi.org/10.1674/0003-0031(2003)150[0343:EOIAAB]2.0.CO;2

Accepted: 1 March 2003; Published: 1 October 2003

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