神戸大学附属図書館デジタルアーカイブ
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https://hdl.handle.net/20.500.14094/90008526
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2024-04-26
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90008526 (fulltext)
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メタデータID
90008526
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open access
出版タイプ
Version of Record
タイトル
Shell-breaking predation on gastropods by Badister pictus (Coleoptera, Carabidae) with strikingly asymmetric mandibles
著者
著者名
Hayashi, Masakazu
著者ID
A1068
研究者ID
1000070399377
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=044a869d6d3e5977520e17560c007669
著者名
Sugiura, Shinji
杉浦, 真治
スギウラ, シンジ
所属機関名
農学研究科
収録物名
ZooKeys
巻(号)
1044
ページ
815-830
出版者
Pensoft Publishers
刊行日
2021-06-16
公開日
2021-08-27
抄録
The adults and larvae of some groups in the coleopteran family Carabidae are known to prey on snails (Mollusca: Gastropoda). Most species of the carabid tribe Licinini are believed to feed on live snails. However, the snail-eating behavior of only a few species has been studied. Whether adults of the licinine genus Badister can prey on live snails was tested by providing 155 live snails of 20 species (eleven terrestrial and nine aquatic species) to adults of Badister pictus Bates, 1873, and observing their behavior under laboratory conditions. Six of the 20 snail species have an operculum that can close the aperture of the shell. Each B. pictus adult attacked all of the snails provided. Badister pictus successfully preyed on ten terrestrial and six aquatic snail species. These beetles used their strikingly asymmetrical mandibles to break the dextral shells along the dorsal part of the whorls from the outer lip of the aperture towards the apex, allowing subsequent consumption of the soft bodies. However, 41.9% of snails could not be eaten by B. pictus adults. The rate of predation success by B. pictus decreased with increasing shell size and thickness of snails. In addition, the presence of an operculum decreased the rate of predation success by B. pictus. The results show that the shell size, thickness, and operculum of some snail species could play important roles in preventing B. pictus mandibles from breaking the shells. Therefore, Badister beetles may exert selective pressure on the evolution of defensive shell structures in small-sized snails.
キーワード
freshwater snail
Gastropoda
land snail
Licinini
Anti-predator defense
Badister
カテゴリ
農学研究科
学術雑誌論文
権利
Copyright M. Hayashi, S. Sugiura.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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資源タイプ
journal article
言語
English (英語)
ISSN
1313-2989
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eISSN
1313-2970
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関連情報
DOI
https://doi.org/10.3897/zookeys.1044.62293
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