01706nas a2200145 4500008004100000022001300041245008200054210006900136260001600205300001400221490000700235520122400242100002801466856006601494 1984 eng d a0003347200aMale displays and female preferences in the courtship of a gregarious cricket0 aMale displays and female preferences in the courtship of a grega cJan-08-1984 a690 - 6970 v323 a

The courtship of males of the gregarious cricket Amphiacusta maya involves a variety of signals. The quantitative aspects of both successful and unsuccessful courtship sequences were examined to determine whether certain aspects of male displays were correlated with female mating preferences regardless of which male performed them. Although variability among males was high for most courtship components measured, I found no evidence of female choice with respect to the courtship variables studied. About 35% of the duration of each male courtship sequence is devoted to chirping, but there were no differences in either the likelihood of copulation or the latency to copulation between normal males and experimentally silenced males. The possibility that intrinsic differences in male quality explained the variability in courtship duration was examined with a two-way analysis of variance. The variance in courtship duration was attributable to variance among females, not to variance among males. Thus the courtship behaviour of male A. maya is variable enough to allow females to exert stabilizing or disruptive selection on displays, but there is no evidence that females use the available information.

1 aBoake, Christine, R. B. uhttp://linkinghub.elsevier.com/retrieve/pii/S000334728480144X01036nas a2200157 4500008004100000022001400041245006800055210006600123260001600189300001400205490000800219520046000227100002800687700002300715856014000738 1982 eng d a0036-807500aAggressive Signal in "Courtship" Chirps of a Gregarious Cricket0 aAggressive Signal in Courtship Chirps of a Gregarious Cricket cMay-11-1982 a580 - 5820 v2183 a

Unlike other known species of crickets, Amphiacusta maya in Central America mates in groups. Experimentally silenced males experience reduced mating success, not owing to decreased receptivity by females, but owing to increased time spent fighting with other males that persistently interrupt silent courtships. Thus, the data indicate that "courtship" chirping functions as a warning to other males, rather than as a signal to females.

1 aBoake, Christine, R. B.1 aCaparanica, R., R. uhttp://www.sciencemag.org/cgi/doi/10.1126/science.218.4572.580https://syndication.highwire.org/content/doi/10.1126/science.218.4572.58001614nas a2200145 4500008004100000022001400041245006600055210006600121260001600187300001400203490000700217520117600224100002801400856004001428 1984 eng d a0005-795900aNatural History and Acoustic Behavior of a Gregarious Cricket0 aNatural History and Acoustic Behavior of a Gregarious Cricket cJan-01-1984 a241 - 2500 v893 a

The cricket Amphiacusta maya (Gryllidae: Phalangopsinae) was studied in the field in Costa Rica and in the laboratory. In the seasonal habitat of Guanacaste Province, C.R., adults are found only during the first 4 months of the rainy season. Adults and subadult nymphs form aggregations each dawn and disperse at dusk. Within the aggregations, males chirp, fight other males, and occasionally mate with females. The acoustic behavior of these crickets differs from that of the better-known field crickets in three major ways. First, males do not produce a calling song. Second, the chirps given in aggressive and courtship contexts are nearly indistinguishable spectrally and temporally. Third, the species-typical chirp does not elicit phonotaxis in adult females or in nymphs. Possibly the calling song would no longer provide a selective advantage to males because females are in their vicinity regardless of male behavior. Additionally, acoustic signal similarity may be a result of selection for aggressive signalling in both contexts (aggression and courtship). Thus these modifications in acoustic signals may be adaptations to a gregarious mating system.

1 aBoake, Christine, R. B. uhttp://www.jstor.org/stable/4534348