@article{oai:oacis.repo.nii.ac.jp:00002002,
 author = {三田, 哲也 and 濱崎, 活幸 and 飯塚, 千香子},
 journal = {日本生物地理学会会報, Bulletin of the Biogeographical Society of Japan},
 month = {Jan},
 note = {The present study investigated the distributions of terrestrial hermit crabs
on the coasts of Chichijima Island in the Bonin Islands and Hachijojima Island in the Izu
Islands, Japan. Juvenile and adult crabs were collected through visual surveys from 4 to
6 October 2013 at two localities on Chichijima Island, and from 1 to 3 August 2012 and
2013 at seven localities on Hachijojima Island. Additionally, we surveyed early juveniles
at additional three localities on Chichijima Island. In Chichijima Island, Coenobita
purpureus was dominant, followed by C. cavipes and C. rugosus, and one individual of
a rare species C. perlatus was collected. One individual of C. brevimanus (ovigerous)
was also collected and it was a new record in the Bonin Islands. Early juveniles of C.
purpureus, C. cavipes and C. rugosus were only found in a restricted beach area in the
northern part of the island. In Hachijojima Island, C. purpureus was dominant in early
juvenile specimens collected from five localities. A few early juveniles of C. rugosus
were also collected. However, all captured large crabs were C. purpureus, suggesting
that early juveniles of C. rugosus had died during an overwintering period.
父島と八丈島でオカヤドカリ類の分布状況を調査した．父島での調査は2013 年10 月4 日～ 6 日にか
けて行い，2 ヵ所の海岸で稚ガニと成体を目視探索するとともに，その他3 ヵ所の海岸で初期稚ガニを
探索した．八丈島での調査は2012 年と2013 年の8 月1 日～ 3 日にかけて行い，島の周囲7 ヵ所の海岸
で目視によって稚ガニと成体を探索した．父島ではムラサキオカヤドカリが優占し，オカヤドカリとナ
キオカヤドカリに加え，希少種であるサキシマオカヤドカリ1 個体と小笠原諸島では初記録となるオオ
ナキオカヤドカリ1 個体（抱卵雌）が捕獲された．初期稚ガニは島北部の海岸1 ヵ所の限られた場所で
発見されたにすぎず，そこではムラサキオカヤドカリが優占し，オカヤドカリとナキオカヤドカリも捕獲された．八丈島では5 ヵ所で初期稚ガニが捕獲され，優占種はムラサキオカヤドカリであり，わずか
ながらナキオカヤドカリもみられた．しかし，大型個体はすべてムラサキオカヤドカリであったことか
ら，ナキオカヤドカリは冬季に死滅しているものと推察された．},
 pages = {65--74},
 title = {父島と八丈島沿岸域におけるオカヤドカリ類の分布},
 volume = {72},
 year = {2018}
}