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Delayed sexual maturity in males of Vespa velutina

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorPOIDATZ, Juliette
hal.structure.identifierInstitut de recherche sur la biologie de l'insecte [IRBI]
dc.contributor.authorBRESSAC, Christophe
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorBONNARD, Olivier
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorTHIERY, Denis
dc.date.accessioned2024-04-08T12:34:14Z
dc.date.available2024-04-08T12:34:14Z
dc.date.issued2018
dc.identifier.issn1672-9609
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197252
dc.description.abstractEnVespa velutina var nigrithorax (Lepelletier, 1835) is an invasive predator of bees accidentally introduced in France in 2004, and it is having a serious impact on apiculture and ecosystems. Studying the reproduction of an invasive species is key to assess its population dynamic. This study explores the sexual maturation of V. velutina males and the evolution of their fertility. The main studied parameters were physiologic (spermiogenesis, spermatogenesis) and anatomic (testes size and structure, head width). Two populations of males were described based on their emergence period: early males in early summer or classic males in autumn. Each testis has an average of 108 testicular follicles. Spermatogenesis is synchronous, with only 1 sperm production wave, and completed, on average, at 10.3 d after emergence with the degeneration of the testes. The sperm counts in seminal vesicles of mature males are 3 × 106 in October/November and 0.8 × 106 in June. In comparison, females store 0.1 × 106 sperm in their spermathecae. The early males emerged from colonies made by fertilized queens. The reproductive potential of these early males seemed limited, and their function in the colony is discussed. The sperm stock evolution in autumn males suggests the occurrence of a reproductive pattern of male competition for the access to females and a single copulation per male. The synchronicity of male and foundress emergences and sexual maturation is of primary importance for the mating success and the future colony development.
dc.language.isoen
dc.publisherWiley
dc.title.enDelayed sexual maturity in males of Vespa velutina
dc.typeArticle de revue
dc.identifier.doi10.1111/1744-7917.12452
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalInsect Science
bordeaux.page160–166
bordeaux.volume310B
bordeaux.hal.laboratoriesSanté et Agro-Ecologie du Vignoble (SAVE) - UMR 1065*
bordeaux.issue2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02626180
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02626180v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Insect%20Science&rft.date=2018&rft.volume=310B&rft.issue=2&rft.spage=160%E2%80%93166&rft.epage=160%E2%80%93166&rft.eissn=1672-9609&rft.issn=1672-9609&rft.au=POIDATZ,%20Juliette&BRESSAC,%20Christophe&BONNARD,%20Olivier&THIERY,%20Denis&rft.genre=article


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