Jurassic scorpionflies (Mecoptera) with swollen first metatarsal segments suggesting sexual dimorphism

dc.contributor.authorZhang, Yan-jie
dc.contributor.authorShih, Peter J. M.
dc.contributor.authorWang, Jun-you
dc.contributor.authorMcNamara, Maria E.
dc.contributor.authorShih, Chungkun
dc.contributor.authorRen, Dong
dc.contributor.authorGao, Tai-ping
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderFok Ying Tong Education Foundationen
dc.contributor.funderProject of High-level Teachers in Beijing Municipal Universities in the Period of 13th Five-year Planen
dc.date.accessioned2021-09-09T15:04:45Z
dc.date.available2021-09-09T15:04:45Z
dc.date.issued2021-03-20
dc.date.updated2021-09-07T10:49:16Z
dc.description.abstractBackground: Sexual dimorphism is widespread in insects. The certain specialized structures may be used as weapons in male–male combats or as ornaments to enhance mating opportunities. Results: We report striking swollen first tarsal segments in two families, four genera and six species of scorpionflies from the Middle Jurassic Yanliao Biota of Northeastern China. Swollen tarsal segments are restricted to male specimens and to hind leg tarsi. The geometric morphometric analyses reveal that the degree of swelling within the orthophlebiid species possessing swollen first metatarsal segments is species-specific, which can be used as a diagnostic character for taxonomic and phylogenetic studies. Conclusions: The new findings indicate that swollen first metatarsal segments are relatively common in the family Orthophlebiidae during the Middle Jurassic. The tarsal swellings are considered to be sexually dimorphic, potentially associated with sexually display by males and/or camouflage of a “nuptial gift” in the mating process.en
dc.description.sponsorshipNational Natural Science Foundation of China (Grant nos. 31730087, 41688103, 32020103006, 31872277), (Capacity Building for Sci-Tech Innovation-Fundamental Scientific Research Funds (Grant no. 010-20530290089)): Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (171016); Support Project of High-level Teachers in Beijing Municipal Universities (No. IDHT20180518)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid47en
dc.identifier.citationZhang, Y.-j., Shih, P. J. M., Wang, J.-y., McNamara, M. E., Shih, C., Ren, D. and Gao, T.-p. (2021) 'Jurassic scorpionflies (Mecoptera) with swollen first metatarsal segments suggesting sexual dimorphism', BMC Ecology and Evolution, 21(1), 47 (21 pp). doi: 10.1186/s12862-021-01771-3en
dc.identifier.doi10.1186/s12862-021-01771-3en
dc.identifier.endpage21en
dc.identifier.issn2730-7182
dc.identifier.journaltitleBMC Ecology and Evolutionen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/11861
dc.identifier.volume21en
dc.language.isoenen
dc.publisherSpringer Natureen
dc.relation.urihttps://bmcecolevol.biomedcentral.com/articles/10.1186/s12862-021-01771-3
dc.rights© The Author(s) 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectFossil insecten
dc.subjectHolcorpidaeen
dc.subjectMesozoicen
dc.subjectOrthophlebiidaeen
dc.subjectTarsal swellingen
dc.subjectNuptial giften
dc.subjectYanliao Biotaen
dc.titleJurassic scorpionflies (Mecoptera) with swollen first metatarsal segments suggesting sexual dimorphismen
dc.typeArticle (peer-reviewed)en
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