A hemimetabolous wing development suggests the wing origin from lateral tergum of a wingless ancestor

Takahiro Ohde (), Taro Mito and Teruyuki Niimi
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Takahiro Ohde: Kyoto University
Taro Mito: Tokushima University
Teruyuki Niimi: National Institute for Basic Biology

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract The origin and evolution of the novel insect wing remain enigmatic after a century-long discussion. The mechanism of wing development in hemimetabolous insects, in which the first functional wings evolved, is key to understand where and how insect wings evolutionarily originate. This study explored the developmental origin and the postembryonic dramatic growth of wings in the cricket Gryllus bimaculatus. We find that the lateral tergal margin, which is homologous between apterygote and pterygote insects, comprises a growth organizer to expand the body wall to form adult wing blades in Gryllus. We also find that Wnt, Fat-Dachsous, and Hippo pathways are involved in the disproportional growth of Gryllus wings. These data provide insights into where and how insect wings originate. Wings evolved from the pre-existing lateral terga of a wingless insect ancestor, and the reactivation or redeployment of Wnt/Fat-Dachsous/Hippo-mediated feed-forward circuit might have expanded the lateral terga.

Date: 2022
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DOI: 10.1038/s41467-022-28624-x

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