01891nas a2200145   4500008004100000022001300041245011400054210006900168260001600237300001400253490000700267520138500274100002001659856006601679       2005                        eng d  a0003347200aDifference in calling song of three field crickets of the genus Teleogryllus: the role in premating isolation0 aDifference in calling song of three field crickets of the genus   cJan-04-2005  a881 - 8890 v693 a<p>Cricket songs are species-specific signals that are important for species recognition. To prove the effectiveness of calling songs in premating isolation, studies need to take into account closely related species distributed sympatrically in nature. I compared the calling songs of three closely related cricket species that inhabit the Japanese archipelago: Teleogryllus yezoemma, T. emma and T. taiwanemma. Teleogryllus emma is widely distributed in the archipelago and overlaps the ranges of T. taiwanemma in the south and T. yezoemma in the north; T. yezoemma and T. taiwanemma are allopatric. I compared three temporal parameters (the long-chirp duration, the interphrase duration and the pulse cycle), a frequency parameter (the dominant frequency) and two structural parameters (the number of pulses in one long chirp and the number of short chirps following one long chirp). In addition, I conducted a two-speaker playback experiment using female T. taiwanemma to test whether they can accurately distinguish conspecific males based on their calling song. The species with partially overlapping ranges had divergent songs that females could distinguish accurately, whereas the allopatric species had similar songs that females could not accurately discriminate. These results suggest that the calling song has an important role as a premating isolation mechanism.</p>
1 aHonda-Sumi, Eri  uhttp://linkinghub.elsevier.com/retrieve/pii/S000334720400380X