@article {53396, title = {Sing and do not stray: male rufous-and-white wrens use duets and physical behaviours to guard their mates}, journal = {Animal Behaviour}, volume = {143}, year = {2018}, month = {Jan-09-2018}, pages = {35 - 42}, abstract = {

In diverse animal taxa, breeding partners coordinate their vocalizations to produce vocal duets. One seldom-studied hypothesis for duets is the paternity guarding hypothesis, which states that male animals create duets to advertise their partner\&$\#$39;s mated status and minimize extrapair mating attempts between their partner and other males. We experimentally tested the paternity guarding hypothesis in rufous-and-white wrens, Thryophilus rufalbus, a neotropical duetting songbird. We designed a two-part playback experiment: males first experienced a simulated territorial intrusion by a rival male, and were then given opportunities to answer their female breeding partner\&$\#$39;s songs to create duets. We repeated this experiment during the female\&$\#$39;s fertile and nonfertile breeding stages. In support of predictions of the paternity guarding hypothesis, male wrens created more duets with their partner\&$\#$39;s songs during the fertile period compared to the nonfertile period. Additionally, male wrens appeared to physically guard their mates with greater intensity during the fertile period but did not increase their overall song rates, demonstrating that increased duetting rates during the fertile period were a result of a change in male duetting behaviour, rather than a change in song rate. Our study is among the first to experimentally test the paternity guarding hypothesis for duet function, and suggests that male rufous-and-white wrens use both vocal and physical behaviours to guard their paternity.

}, keywords = {duetting, mate guarding, paternity guarding, rufous-and-white wren, Thryophilus rufalbus, Thryothorus rufalbus}, issn = {00033472}, doi = {10.1016/j.anbehav.2018.07.005}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0003347218302203https://api.elsevier.com/content/article/PII:S0003347218302203?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S0003347218302203?httpAccept=text/plain}, author = {Kahn, Zachary A. and Moser-Purdy, Christopher and Mennill, Daniel J.} } @article {52947, title = {Paraplangia sinespeculo, a new genus and species of bush-cricket, with notes on its biology and a key to the genera of Phaneropterinae (Orthoptera: Tettigonioidea) from Madagascar}, journal = {Journal of Orthoptera Research}, volume = {27}, year = {2018}, month = {Nov-07-2019}, pages = {143 - 153}, abstract = {

Madagascar is a well-known hotspot of biodiversity. However, many Orthoptera, and especially the Tettigonioidea, belong to little-studied groups. Here we describe a new genus and species of bush-cricket reared from field-collected eggs. Paraplangia sinespeculo gen. nov., sp. nov. belongs to Phaneropterinae and shares diagnostic characteristics with members of the tribe Amblycoryphini and its African subtribe Plangiina stat. nov. Paraplangia, which has a chromosome number of 31 X0, differs from other African members of the tribe and subtribe such as Eurycorypha and Plangia, which both have 29 X0. In addition to morphology, we describe the male calling song, female acoustic response, and mating behavior. As calling song, the male produces two series of short syllables. At the end of the second series the female responds with signals of similar duration and spectral composition as the male sounds (peak about 8-9 kHz). To make future identification easier, a key to all genera of Phaneropterinae found in Madagascar is presented.

}, keywords = {Amblycoryphini, bioacoustics, chromosomes, duetting, Orophus}, issn = {1082-6467}, doi = {10.3897/jor.27.24243}, url = {https://jor.pensoft.net/articles.php?id=24243}, author = {Klaus-Gerhard Heller and Claudia Hemp and Massa, Bruno and Koci{\'n}ski, Maciej and Warcha{\l}owska-{\'S}liwa, El{\.z}bieta} } @article {40433, title = {Sound production in primitive Orthoptera from Western Australia: sounds used in defence and social communication in Ametrus sp. and Hadrogryllacris sp. (Gryllacrididae: Orthoptera)}, journal = {Journal of Natural History}, volume = {31}, year = {1997}, month = {Jan-07-1997}, pages = {1127 - 1141}, abstract = {

Sound production in two undescribed species of Gryllacrididae belonging to the genus Ametrus sp. and Hadrogryllacris sp. takes the form of defensive stridulation and intra-specific signalling by drumming on the substrate. Defensive stridulation is produced as part of an elaborate visual display, by femoro-tergal stridulation. Two rows of spines on abdominal tergites II and III of both species are rubbed by an elongate area of tubercules on the inner femoral surface of the hind legs. Analysis showed that the motion of the leg relative to the abdomen involves a complex counter-rotation of the leg between leg and abdomen. The defensive display may be performed in day light. Social signalling in both species occurs after dark, and involves drumming on the substrate by both hind legs in loose synchrony. Drumming is rhythmic and species\&$\#$39; specific. Males respond to playback calls and females duet with males. The evolution of this calling behaviour is discussed and comparisons are made with the other primitive ensiferan family known to produce both tergo-abdominal defensive stridulation and femoral drumming behaviour, the Stenopelmatidae.

}, keywords = {defence, duetting, social communication, sound production, substrate vibration}, issn = {0022-2933}, doi = {10.1080/00222939700770591}, url = {http://www.tandfonline.com/doi/abs/10.1080/00222939700770591}, author = {Field, L.H. and Winston J. Bailey} }