Sympatric populations of sister species of Brachyrhaphis |
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Authors: | S J Ingley |
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Institution: | Evolutionary Ecology Laboratories, Department of Biology, Brigham Young University, 401 WIDB, Provo, UT, 84602, U.S.A. |
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Abstract: | The first records of sympatric populations of the poorly studied sister species Brachyrhaphis roseni and Brachyrhaphis terrabensis are presented. Sympatric populations were found in a total of 14 localities in four river drainages throughout the Pacific slopes of western Panama, and they occurred in a wide range of elevations, from 90 to 651 m. These data expand the elevation range of each species, and provide the first case of sympatric sister species within the genus. |
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Keywords: | ecological divergence livebearing Panama Poeciliidae speciation sympatry |
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