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Geographic Variation Of Genetic And Behavioral Traits In Northern And Southern Túngara Frogs

Show simple item record Pröhl, Heike Koshy, Regina A. Mueller, Ulrich Rand, A. Stanley Ryan, Michael J. 2016-05-09T18:03:52Z 2016-05-09T18:03:52Z 2006
dc.identifier.citation Pröhl, H., Koshy, R. A., Mueller, U., Rand, A. S., & Ryan, M. J. (2006). Geographic Variation Of Genetic And Behavioral Traits In Northern And Southern Túngara Frogs. Evolution, 60(8), 1669-1679. es_CR
dc.identifier.uri 10.1111/j.0014-3820.2006.tb00511.x
dc.description.abstract We use a combination of microsatellite marker analysis and mate-choice behavior experiments to assess patterns of reproductive isolation of the Túngara frog Physalaemus pustulosus along a 550-km transect of 25 populations in Costa Rica and Panama. Earlier studies using allozymes and mitochondrial DNA defined two genetic groups of tu´ngara frogs, one ranging from Mexico to northern Costa Rica (northern group), the second ranging from Panama to northern South America (southern group). Our more fine-scale survey also shows that the northern and southern tu´ngara frogs are genetically different and geographically separated by a gap in the distribution in central Pacific Costa Rica. Genetic differences among populations are highly correlated with geographic distances. Temporal call parameters differed among populations as well as between genetic groups. Differences in calls were explained better by geographic distance than by genetic distance. Phonotaxis experiments showed that females preferred calls of males from their own populations over calls of males from other populations in about two-thirds to three-fourths of the contrasts tested. In mating experiments, females and males from the same group and females from the north with males from the south produced nests and tadpoles. In contrast, females from the south did not produce nests or tadpoles with males from the north. Thus, northern and southern Túngara frogs have diverged both genetically and bioacoustically. There is evidence for some prezygotic isolation due to differences in mate recognition and fertilization success, but such isolation is hardly complete. Our results support the general observation that significant differences in sexual signals are often not correlated with strong genetic differentiation. es_CR
dc.language.iso en_US es_CR
dc.publisher Evolution es_CR
dc.subject Bioacoustic variation es_CR
dc.subject genetic variation es_CR
dc.subject microsatellites es_CR
dc.subject Physalaemus pustulosus es_CR
dc.subject reproductive isolation es_CR
dc.subject Túngara frogs es_CR
dc.subject variación bioacústica es_CR
dc.subject variación genética es_CR
dc.subject microsatélites es_CR
dc.subject aislamiento reproductivo es_CR
dc.subject ranas Túngara es_CR
dc.title Geographic Variation Of Genetic And Behavioral Traits In Northern And Southern Túngara Frogs es_CR
dc.type Article es_CR

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