2024-03-29T00:02:18Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/798592022-11-17T02:08:08Zhdl_2115_20039hdl_2115_116Shell-Exchange Behavior in a Hermit-Crab-Like Tanaidacean (Crustacea : Malacostraca)1000070723360Kakui, Keiichiopen accessconchicolouslifestyleasymmetrymobile shelterconvergenceevolutionArthropodaPeracarida485This study describes shell-exchange behavior in the hermit-crab-like tanaidacean Macrolabrum
sp. (Pagurapseudidae: Pagurapseudinae) under captive conditions. I observed one shell exchange
by Macrolabrum sp., the behavioral sequence of which was as follows: a shell-carrying tanaidacean
1) grasped the edge of the aperture of an empty gastropod shell with its right cheliped; 2)
inspected the condition inside the shell four times by inserting the anterior portion of its body into
the shell; and 3) moved into the shell, posterior end (pleotelson) first. The elapsed time from the
initial grasping of the empty shell to completing the move into it was 2 min 20 sec. In contrast to a
Pagurapseudes tanaidacean and hermit crabs, the individual of Macrolabrum sp. did not examine
the external surface of the shell during the single shell exchange observed.Zoological Society of Japan2019-12engjournal articleVoRhttp://hdl.handle.net/2115/79859https://doi.org/10.2108/zs1900480289-0003Zoological Science366468470https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/79859/1/Zool%20Sci%2036_468-470.pdfapplication/pdf250.39 KB2019-12