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Ergatoid queen development in the ant Myrmecina nipponica : modular and heterochronic regulation of caste differentiation

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タイトル: Ergatoid queen development in the ant Myrmecina nipponica : modular and heterochronic regulation of caste differentiation
著者: Miyazaki, Satoshi 著作を一覧する
Murakami, Takahiro 著作を一覧する
Kubo, Takuya 著作を一覧する
Azuma, Noriko 著作を一覧する
Higashi, Seigo 著作を一覧する
Miura, Toru 著作を一覧する
キーワード: caste development
heterochrony
imaginal primordia
modularity
social insect
発行日: 2010年 7月 7日
出版者: The Royal Society
誌名: Proceedings of the Royal Society B : Biological Sciences
巻: 277
号: 1690
開始ページ: 1953
終了ページ: 1961
出版社 DOI: 10.1098/rspb.2010.0142
抄録: Caste polyphenism in social insects provides us with excellent opportunities to examine the plasticity and robustness underlying developmental pathways. Several ant species have evolved unusual castes showing intermediate morphologies between alate queens and wingless workers. In some low-temperature habitats, the ant Myrmecina nipponica produces such intermediate reproductives (i.e. ergatoids), which can mate and store sperm but cannot fly. To gain insight into the developmental and evolutionary aspects associated with ergatoid production, we conducted morphological and histological examinations of the postembryonic development of compound eyes, gonads and wings during the process of caste differentiation. In compound eyes, both the queen-worker and ergatoid-worker differences were already recognized at the third larval instar. In gonads, queen-worker differentiation began at the larval stage, and ergatoid-worker differentiation began between the prepupal and pupal stages. Wing development in ergatoids was generally similar to that in workers throughout postembryonic development. Our results showed that the developmental rate and timing of differentiation in body parts differed among castes and among body parts. These differences suggest that the rearrangement of modular body parts by heterochronic developmental regulation is responsible for the origination of novel castes, which are considered to be adaptations to specific ecological niches.
関連URI: http://rspb.royalsocietypublishing.org/
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/46778
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 三浦 徹

 

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