posted by AA
博士課程の大学院生の吉川 晟弘さんの論文が出版されました。おめでとうございます。
これは、ヤドカリの中でも二枚貝の半片を背負うという特殊な生態をもつ、カイガラカツギというグループのヤドカリの行動に関するものです。
Yoshikawa, A., M. Tomatsri, A. Asakura, (2018). The shell-acquisition behaviour of the bivalve-using hermit crab Porcellanopagurus nihonkaiensis Takeda, 1985 (Decapoda: Anomura; Paguroidea). Crustaceana, 91, 4, 509-515
ABSTRACT.- Almost all species of hermit crabs inhabit dead gastropod shells; however, species of some genera have evolved to inhabit bivalve or patelliform shells. It has been assumed that these species carry their shells using uropodal rasps and the hooked dactyls of their fourth pereopods, although no detailed description of the shell acquisition behavior of those species has previously been documented. We have therefore observed the shell acquisition behavior of Porcellanopagurus nihonkaiensis Takeda, 1985, which was collected by dredge at Shimoda, Shizuoka Prefecture, Japan. Our observation suggests that the shell is fixed in place by only the uropodal rasps in combination by hydrostatic pressure in the telson.
