| The speed of evolution of both the behavioral isolation and male mating song suggests that selection has played a role in divergence. |
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| An experiment-wide analysis was conducted to determine whether results of the behavioral isolation experiment are consistent with those from the initial screening. |
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| Doubtlessly, behavioral isolation is most feasible in those species utilizing internal fertilization, or which at least depend upon direct stimulation by the opposite sex for the release of gametes |
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| Speciation, or more precisely the development of reproductive isolation, cannot take place without some physical or behavioral isolation of populations in space or time. |
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| The fourth potential form of behavioral isolation is the temporal equivalent of habitat isolation, involving preferences to mate at different times. |
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| Multiple mechanisms have been demonstrated, including symbionts-induced behavioral isolation, symbiont induction of ecological isolation, or various genic or cytoplasmic incompatibilities. |
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| We propose two complementary research approaches, one addressing the processes that drive the evolution of mate recognition systems and the other addressing the phenotypic architecture of behavioral isolation. |
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