02309nas a2200217 4500008004100000022001400041245008500055210006900140260001600209300001400225490000800239520163900247653003501886653002101921653001401942653002301956653002401979100001802003700001902021856005102040 1999 eng d a0952-836900aAcoustic signals in cicada courtship behaviour (order Hemiptera, genus Tibicina)0 aAcoustic signals in cicada courtship behaviour order Hemiptera g cJan-01-1999 a217 - 2240 v2623 a

During pair formation, cicadas produce acoustic signals that allow sexual partners to meet. The male is generally the emitter, producing calling songs at long range and courtship songs at short range, and the female generally the receiver. The male–female courtship behaviour of seven taxa belonging to the Palaearctic genus Tibicina is described here for the first time. Male courtship songs consisted of a succession of groups of pulses arranged in two sub‐groups. They were short in duration with strong amplitude variations. In all taxa, courtship songs were preceded by a series of 1–5 audible wing‐flicks. Differences in courtship song structure between two pairs of sympatric species, respectively T. corsica corsica/T. nigronervosa and T. corsica fairmairei/T. tomentosa, suggest that courtship signals could act as distinctive species mating recognition systems. In response to male acoustic signalling, females of T. c. corsica, T. c. fairmairei and T. nigronervosa produced audible wing‐flicks such that both sexes established an acoustic duet ending in physical contact. In addition, males and females of T. tomentosa produced silent wing‐flicks, a previously unknown behaviour, which could facilitate pheromone diffusion. Females did not exhibit a species‐specific temporal pattern in acoustic reply to male courtship song and female wing‐flick behaviour does not seem necessary for pair formation. Nevertheless, this strategy through male and female signalling ensured a reciprocal phonotactic approach that probably enhanced the likelihood for the two sexes to meet in complex habitats.

10aaudible and silent wing-flicks10acicadas Tibicina10acourtship10amale–female duet10asound communication1 aSueur, Jerome1 aAubin, Thierry uhttp://doi.wiley.com/10.1017/S095283690300468002141nas a2200205 4500008004100000245015200041210006900193520135900262653001501621653002201636653002001658653003301678653002801711653001401739653001801753653002101771100002701792700002201819856009401841 2019 eng d00aNoisy neighbours among the selfish herd: a critical song distance mediates mate recognition within cicada emergences (Hemiptera: Cicadidae)Abstract0 aNoisy neighbours among the selfish herd a critical song distance3 a

Cicadas probably experience mate recognition challenges as a result of the densities that may occur during adult emergence events, and in Okanagana, the most speciose genus of North American cicadas, high alpha diversities during protoperiodical emergences will exacerbate the mate recognition problem. Using 227 songs from 23 taxa, a linear plateau model regressed recognition potential, estimated from linear discriminant analysis, against song distance, revealing a critical song distance of 0.728 standard deviations in z-transformed song parameter space accompanied by a recognition of 91.6%. Based on detailed examination of museum specimen localities, field observations and habitat, taxa were classified as sympatric or allopatric. Sympatric species were separated by song distances that were significantly greater than this critical distance. As expected for mate recognition characters, little within-species variance was observed in the songs of most species, and the relationship between increases in syllable rate and improved recognition was one of diminishing returns. For several taxa that sang with extreme syllable rates of high variance, a mate recognition – sexual selection continuum is proposed. Along this continuum rapid rates simultaneously prevent mate recognition errors while signalling male quality to females.

10aCalifornia10afemale preference10aindicator trait10alinear discriminant function10alinear plateau analysis10aOkanagana10areceiver bias10asexual selection1 aChatfield-Taylor, Will1 aCole, Jeffrey, A. uhttps://academic.oup.com/biolinnean/advance-article/doi/10.1093/biolinnean/blz132/560269701489nas a2200157 4500008004100000022001400041245014400055210006900199260001600268300001400284490000700298520094300305100001401248700001401262856005501276 2003 eng d a0028-104200aIs microhabitat segregation between two cicada species ( Tibicina haematodes and Cicada orni ) due to calling song propagation constraints?0 amicrohabitat segregation between two cicada species Tibicina hae cJan-07-2003 a322 - 3260 v903 a

The cicada species Tibicina haematodes and Cicada orni are two sympatric species often inhabiting vineyards. We show that they occupy two distinct levels: males of T. haematodes produce their calling songs from a high position in vine foliage while males of C. orni call from a low position near the ground on vine trunks. Experiments consisting of broadcasting and re-recording experimental signals in natural habitats from low and high positions show that signals are more and more modified as sender–receiver distance increases. T. haematodes would have an advantage when calling on trunks rather than on branches whereas C. orni would be able to call indiscriminately from both low and high positions. Thus, the microhabitat segregation observed between T. haematodes and C orni in vineyards does not seem to be related to calling song propagation constraints, but may be due to other ethological or ecological factors.

1 aSueur, J.1 aAubin, T. uhttp://link.springer.com/10.1007/s00114-003-0432-500331nas a2200097 4500008004100000245005900041210005800100300001400158100002000172856004100192 1973 eng d00aUn type nouveau d'appareil stridulant chez les Cigales0 aUn type nouveau dappareil stridulant chez les Cigales a1487-14891 aBoulard, Michel uhttps://bio.acousti.ca/de/node/17265