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タイトル: Morphology of the gastric mill teeth in dotillid crabs (Crustacea: Brachyura: Dotillidae) from Indonesia
著者: Murniati, Dewi C.
Asakura, Akira  kyouindb  KAKEN_id
Nakano, Tomoyuki  kyouindb  KAKEN_id  orcid https://orcid.org/0009-0008-0109-1289 (unconfirmed)
Shimomura, Michitaka  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-2524-7160 (unconfirmed)
著者名の別形: 朝倉, 彰
中野, 智之
下村, 通誉
キーワード: 16S rRNA
COI
deposit feeder crabs
lateral tooth plate
median tooth plate
phylogeny
propyloric ossicle
発行日: Jul-2023
出版者: Wiley
誌名: Journal of Morphology
巻: 284
号: 7
論文番号: e21605
抄録: The gastric mill is a prominent structure in the digestive system of brachyuran crabs, consisting of a median tooth plate and a pair of lateral tooth plates. Among crab species that are deposit feeders, the morphology and size of the gastric mill teeth are correlated with the preferred substrate types and food spectrum. In this study, we provide a detailed description of the morphology of the median and lateral teeth of the gastric mills in eight species of dotillid crabs from Indonesia, and compare them in relation to habitat preferences and molecular phylogeny. Ilyoplax delsmani, Ilyoplax orientalis, and Ilyoplax strigicarpus have comparatively simple shapes of their median and lateral teeth, with fewer teeth on each lateral tooth plate compared to Dotilla myctiroides, Dotilla wichmanni, Scopimera gordonae, Scopimera intermedia, and Tmethypocoelis aff. ceratophora, which have more complexly shaped median and lateral teeth, with a greater number of teeth on each lateral tooth plate. The number of teeth on lateral tooth correlates with habitat preference, that is, dotillid crabs inhabiting muddy substrata have fewer teeth on the lateral tooth plate, and those inhabiting sandy substrata have a more teeth. Phylogenetic analysis using partial COI and 16S rRNA genes supports that teeth morphology is similar among closely related species. Therefore, the description of median and lateral teeth of the gastric mill is expected to contribute to the systematic study of dotillid crabs.
著作権等: © 2023 The Authors. Journal of Morphology published by Wiley Periodicals LLC.
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
URI: http://hdl.handle.net/2433/285516
DOI(出版社版): 10.1002/jmor.21605
PubMed ID: 37313771
出現コレクション:学術雑誌掲載論文等

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