Comparison of forced mating behaviour in four taxa of Anonconotus, the Alpine bushcricket

Hdl Handle:
http://hdl.handle.net/10545/592770
Title:
Comparison of forced mating behaviour in four taxa of Anonconotus, the Alpine bushcricket
Authors:
Vahed, Karim; Carron, G.
Abstract:
Forced or coercive copulation is known to occur in a variety of insect taxa but until recently, this behaviour had not been recorded in crickets and bushcrickets (Orthoptera: Ensifera). The aim of the present study was to investigate forced mating behaviour in four taxa of Anonconotus Camerano 1878 (Orthoptera: Tettigoniidae), comparing the recently documented forced mating behaviour in the Alpine bushcricket Anonconotus alpinus ghilianii with those of Anonconotus alpinus alpinus, Anonconotus pusillus and Anonconotus baracunensis occidentalis under both laboratory and semi-natural field conditions. In all four taxa, males did not sing to attract females, but instead initiated copulation by stalking the female before leaping onto her and using the sharply pointed cercal spurs to maintain a hold on the female's abdomen. In A. a. ghilianii and A. a. alpinus, the positioning of the male's hind legs appeared to impede the movement of the female's hind legs during copulation. In Anonconotus baracunensis, the duration of copulation was considerably longer than in the other species, lasting a mean of 153 min in the laboratory and 40 min in field enclosures (compared with a mean of 7-9 min in the other taxa). This longer duration of copulation, which occurred following spermatophore attachment, is interpreted as functioning to prolong ejaculate transfer by preventing the female from eating the external portions of the spermatophore. In support of this, male A. baracunensis were found to produce a significantly greater ejaculate mass compared with the other Anonconotus taxa. We propose that members of the genus Anonconotus would make an excellent novel model system for the study of forced copulation from a sexual conflict perspective.
Affiliation:
University of Derby
Citation:
Vahed, K. and Carron, G. (2008), Comparison of forced mating behaviour in four taxa of Anonconotus, the Alpine bushcricket. Journal of Zoology, 276: 313–321. doi: 10.1111/j.1469-7998.2008.00492.x
Publisher:
Wiley
Journal:
Journal of Zoology
Issue Date:
27-Aug-2008
URI:
http://hdl.handle.net/10545/592770
DOI:
10.1111/j.1469-7998.2008.00492.x
Additional Links:
http://doi.wiley.com/10.1111/j.1469-7998.2008.00492.x
Type:
Article
Language:
en
Series/Report no.:
Vol. 276
ISSN:
09528369; 14697998
Appears in Collections:
Environmental Sustainability Research Centre

Full metadata record

DC FieldValue Language
dc.contributor.authorVahed, Karimen
dc.contributor.authorCarron, G.en
dc.date.accessioned2016-01-04T14:26:46Zen
dc.date.available2016-01-04T14:26:46Zen
dc.date.issued2008-08-27en
dc.identifier.citationVahed, K. and Carron, G. (2008), Comparison of forced mating behaviour in four taxa of Anonconotus, the Alpine bushcricket. Journal of Zoology, 276: 313–321. doi: 10.1111/j.1469-7998.2008.00492.xen
dc.identifier.issn09528369en
dc.identifier.issn14697998en
dc.identifier.doi10.1111/j.1469-7998.2008.00492.xen
dc.identifier.urihttp://hdl.handle.net/10545/592770en
dc.description.abstractForced or coercive copulation is known to occur in a variety of insect taxa but until recently, this behaviour had not been recorded in crickets and bushcrickets (Orthoptera: Ensifera). The aim of the present study was to investigate forced mating behaviour in four taxa of Anonconotus Camerano 1878 (Orthoptera: Tettigoniidae), comparing the recently documented forced mating behaviour in the Alpine bushcricket Anonconotus alpinus ghilianii with those of Anonconotus alpinus alpinus, Anonconotus pusillus and Anonconotus baracunensis occidentalis under both laboratory and semi-natural field conditions. In all four taxa, males did not sing to attract females, but instead initiated copulation by stalking the female before leaping onto her and using the sharply pointed cercal spurs to maintain a hold on the female's abdomen. In A. a. ghilianii and A. a. alpinus, the positioning of the male's hind legs appeared to impede the movement of the female's hind legs during copulation. In Anonconotus baracunensis, the duration of copulation was considerably longer than in the other species, lasting a mean of 153 min in the laboratory and 40 min in field enclosures (compared with a mean of 7-9 min in the other taxa). This longer duration of copulation, which occurred following spermatophore attachment, is interpreted as functioning to prolong ejaculate transfer by preventing the female from eating the external portions of the spermatophore. In support of this, male A. baracunensis were found to produce a significantly greater ejaculate mass compared with the other Anonconotus taxa. We propose that members of the genus Anonconotus would make an excellent novel model system for the study of forced copulation from a sexual conflict perspective.en
dc.language.isoenen
dc.publisherWileyen
dc.relation.ispartofseriesVol. 276en
dc.relation.urlhttp://doi.wiley.com/10.1111/j.1469-7998.2008.00492.xen
dc.rightsArchived with thanks to Journal of Zoologyen
dc.subjectSexual conflicten
dc.subjectSexual selectionen
dc.subjectCoercive matingen
dc.subjectCopulation durationen
dc.subjectSpermatophoreen
dc.subjectNuptial feedingen
dc.titleComparison of forced mating behaviour in four taxa of Anonconotus, the Alpine bushcricketen
dc.typeArticleen
dc.contributor.departmentUniversity of Derbyen
dc.identifier.journalJournal of Zoologyen
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