The shell-acquisition behaviour of the bivalve-using hermit crab Porcellanopagurus nihonkaiensis Takeda, 1985 (Decapoda, Anomura, Paguroidea)
The shell-acquisition behaviour of the bivalve-using hermit crab Porcellanopagurus nihonkaiensis Takeda, 1985 (Decapoda, Anomura, Paguroidea)
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双壳类寄居蟹 Porcellanopagurus nihonkaiensis Takeda 的壳获取行为，1985（十足目、Anomura、Paguroidea）
DOI：
10.1163/15685403-00003781
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发表时间：
2018
期刊：
影响因子：
0.6
通讯作者：
Asakura Akira
中科院分区：
文献类型：
--
作者：
Yoshikawa Akihiro;Tomatsuri Morihiko;Asakura Akira
几乎所有种类的寄居蟹都栖息在死去的腹足动物壳中。然而，一些属的物种已经进化到栖息在双壳或髌形贝壳中。据推测，这些物种使用尾足锉刀和第四节肢的钩状指节携带贝壳，尽管之前没有记录这些物种的贝壳获取行为的详细描述。因此，我们观察了日本静冈县下田用挖泥船收集的 Porcellanopagurus nihonkaiensis Takeda, 的贝壳获取行为。我们的观察表明，外壳仅通过尾足锉刀与尾节中的静水压力相结合而固定到位。
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 behaviour of those species has previously been documented. We have therefore observed the shell acquisition behaviour ofPorcellanopagurus nihonkaiensisTakeda, , 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 with hydrostatic pressure in the telson.