Abstract
After being placed equidistant from playbacks of two computer-generated male calls, females of the katydidAmblycorypha parvipennis preferentially moved toward call phrases that were louder, longer, and “leading” (initiated without being overlapped by other call phrase endings). Because earlier tests with calling males had indicated that male mating success was related to these call parameters, we suggest that mating success is partly a result of female choice. Females also preferentially responded to the initial, rather than the latter, half of male phrases. Results of other tests suggested that females were responding to increased phonatome rate characteristic of the first half of the phrase. Males may compete to lead in order to prevent jamming of initial phrase information. Females also preferentially phonoresponded (“ticked”) in response to longer phrases. In earlier studies of male mating success and female phonotaxis using live males, male weight, sound level, and leading were intercorrelated; however, none of these parameters were correlated with phrase length. We suggest that females may respond to different call parameters under different environmental conditions.
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Galliart, P.L., Shaw, K.C. The effect of variation in parameters of the male calling song of the katydid,Amblycorypha parvipennis (Orthoptera: Tettigoniidae), on female phonotaxis and phonoresponse. J Insect Behav 9, 841–855 (1996). https://doi.org/10.1007/BF02208973
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DOI: https://doi.org/10.1007/BF02208973