02143nas a2200157   4500008004100000022001300041245007900054210006900133260001600202300001400218490000700232520164000239100002101879700001901900856006601919       1987                        eng d  a0003347200aAcoustic cues for female choice and male competition in Tettigonia cantans0 aAcoustic cues for female choice and male competition in Tettigon  cJan-06-1987  a887 - 9000 v353 a<p>Song of the bush cricket Tettigonia cantans were analysed, and synthetic song models constructed, to reproduce both the natural variation in the song parameters and the modified spectral balance (high-frequency attenuation) seen after songs are transmitted through the natural habitat. In the laboratory, song models were replayed to female insects in a series of two-choice trials and the phonotactic response was used as the criterion for song preference. Controlling single variables in the models showed that females orientated preferentially to lower-pitched songs, louder songs and models with a relatively louder high-frequency content. Further trials confirmed song frequency to be an important cue and demonstrated spectral balance to be a more effective stimulus than intensity per se. Song models replayed in the field to established (&lsquo;territorial&rsquo;) singing males produced different behavioural responses depending on the song frequency. To low-pitched songs, males were more likely to reduce their singing activity and move away from the sound source. High-pitched song often resulted in an increase in the singing rate and an approach to the loudspeaker. A model without the high-frequency band elicited no detectable response, the subject continuing to sing normally from the same perch. These results support the hypothesis that the spectral balance of the song can be used for range determination. The poor correlation between the measured song variables and morphology suggests that song in this species advertises the status of the male rather than other single attributes such as size or weight.</p>
1 aLatimer, William1 aSippel, Martin  uhttp://linkinghub.elsevier.com/retrieve/pii/S000334728780124001626nas a2200157   4500008004100000245008300041210006900124260001600193300001400209490000700223520111600230100002101346700002101367700002001388856006001408       1984                        eng d00aSpatial Dispersion and Agonistic Contacts of Male Bush Crickets in the Biotope0 aSpatial Dispersion and Agonistic Contacts of Male Bush Crickets   cDec-01-1984  a201 - 2140 v653 a<p>Investigated the dispersion patterns of singing male bush crickets (Tettigonia cantans) and analyzed the behavioral patterns of established males elicited by the song of a conspecific. Results show that, apart from sites with sparse vegetation, stridulating males tend to show clumped distribution in areas with dense plant populations and that, within clumps, individuals are regularly spaced. Males seem to space themselves according to the song intensities they receive from each other. Between-close-neighbors rivalry behavior is expressed by males producing alternating songs, in an approach toward a constantly singing insect, or in an aggressive encounter. Of these 3 behavior patterns, aggressive encounters are most common in high-density populations. Rivalry does not influence the dispersion pattern of the males. A hypothesis is inferred from observations on female behavior: Rivalry itself constitutes an attractive stimulus for females. The problem still left for further research is if, and how, female bush crickets discriminate and choose their mate from a population of singing males.</p>
1 aSchatral, Andrea1 aLatimer, William1 aBroughton, Bill  uhttp://doi.wiley.com/10.1111/j.1439-0310.1984.tb00099.x00386nas a2200109   4500008004100000245009000041210006900131300001200200490000700212100002100219856003600240       1981                        eng d00aThe Acoustic Behaviour of Platycleis albopunctata (Goeze) (Orthoptera, Tettigoniidae)0 aAcoustic Behaviour of Platycleis albopunctata Goeze Orthoptera T  a182-2060 v761 aLatimer, William  uhttp://jstor.org/stable/4534098