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Unraveling mating behavior for Axiidea (Crustacea: Decapoda): Burrow-dwelling callianassid shrimp in intertidal sandflat

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タイトル: Unraveling mating behavior for Axiidea (Crustacea: Decapoda): Burrow-dwelling callianassid shrimp in intertidal sandflat
著者: Somiya, Rei / Tamaki, Akio
発行日: 2017年 1月
出版者: Elsevier B.V.
引用: Journal of Experimental Marine Biology and Ecology, 486, pp.305-313; 2017
抄録: Mating behaviors and mating systems in decapod crustaceans have attracted significant attentions. Dendrobranchiata and several infraorders of Pleocyemata (Caridea, Achelata, Astacidea, Anomura, and Brachyura) are the focal taxa. Virtually nothing is known about the members of Thalassinidea (recently separated into Axiidea including Callianassidae and Gebiidea including Upogebiidae) due to observational difficulties for their deep burrow-dwelling habit. Giving a little sediment and minute artificial tubes for one male and two females of the callianassid, Nihonotrypaea harmandi, in small transparent containers under illumination, observations and video-recordings of mating behaviors were made for the one pair three times, for the first time for Axiidea. The combined time schedule for each behavioral component was obtained. In inactive states, the shrimps stayed in their own burrows. The pre-mating visit was initiated by the male 3–4 d before the copulation, in which mutual signaling between sexes with movement of antennules, maxillipeds, chelipeds, and pleopods occurred. The final access was made by the hard-shelled female. The copulation lasted 91–105 s, with male onto female, during which a single spermatophore was transferred to sternite 8 surface with no sperm-storage structure. After the copulation, intimate exchanges occurred for 3–14 min. The female then isolated herself to an enclosed space for 60–74 min, during which oviposition started 44 min after the copulation, with embryo attachment to pleopods 1–2 completed in 12 min. The embryos were carried for 13–19 d before hatching. These findings would become basic to the understanding of thalassinidean shrimp population dynamics conducive to their key roles as benthic community organizers and ecosystem engineers in marine soft sediments.
キーワード: Axiidea / Burrow dweller / Callianassidae / Decapod crustacean / Intertidal sandflat / Mating behavior
URI: http://hdl.handle.net/10069/37346
ISSN: 00220981
DOI: 10.1016/j.jembe.2016.09.019
権利: © 2016 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
資料タイプ: Journal Article
原稿種類: author
出現コレクション:080 学術雑誌論文

引用URI : http://hdl.handle.net/10069/37346



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