|Citation||Massie, K.R., Markow, T.A. (2005). Sympatry, allopatry and sexual isolation between Drosophila mojavensis and D. arizonae. Hereditas 142(2005): 51--55. (Export to RIS)|
|Publication Type||Research paper|
|PubMed Abstract||Populations of the North American cactophilic fruitfly Drosophila mojavensis and its sibling species D. arizonae exist both in sympatry and in allopatry. Females of D. arizonae, regardless of their population of origin, are effectively completely isolated behaviorally from D. mojavensis males. On the other hand, females of D. mojavensis from the sympatric populations in Sonora, Mexico exhibit significantly stronger premating isolation from D. arizonae males than do D. mojavensis females from allopatric populations from the Baja California peninsula. Earlier studies interpreted these limited observations as support for reinforcement. Since the time of those studies, additional allopatric populations of D. mojavensis have been collected from southern California and from Santa Catalina Island, off the coast of southern California. Here, we tested the prediction that if sympatry is in fact associated with increased isolation in D. mojavensis, these additional allopatric populations also should show, relative to the sympatric ones, less isolation from D. arizonae. Our results are consistent with this prediction and suggest that isolation is in fact stronger in sympatry.|
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|Language of Publication||English|
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