Rapid regeneration of the major cheliped in relation to its function in male-male contests in the hermit crab Pagurus middendorffii
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- Yasuda Chiaki I.
- Laboratory of Marine Biology, Graduate School of Fisheries Science, Hokkaido University
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- Wada Satoshi
- Laboratory of Marine Biology, Graduate School of Fisheries Science, Hokkaido University
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- Matsuo Kento
- Laboratory of Marine Biology, Graduate School of Fisheries Science, Hokkaido University
書誌事項
- タイトル別名
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- Rapid regeneration of the major cheliped in relation to its function in male-male contests in the hermit crab <i>Pagurus middendorffii</i>
- 公開日
- 2014
- 資源種別
- journal article
- DOI
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- 10.3800/pbr.9.122
- 公開者
- 日本プランクトン学会、日本ベントス学会
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説明
Most crustaceans are known to regenerate their appendages after losing them, and the pattern of regeneration may be related to its function. The pattern of regeneration of the right major cheliped was examined after experimentally induced autotomy and its behavioral function during male-male contests for mates was investigated in the hermit crab Pagurus middendorffii. Males with an autotomized major cheliped regenerated it at the first molt after autotomy and showed smaller growth in body size than in control males. The shape of the regenerated cheliped was more slender than the original, implying that the regenerated major cheliped would be less robust and weaker than previously. The length of the major cheliped of an owner male (guarding a female at the start of a dyadic contest) and the body size of an intruder affected whether or not the contest escalated, but the major cheliped length of the intruder and the body size of the owner determined the outcome of the escalated contest. The intruder used the major cheliped as an offensive weapon to take the female away from the owner by force after the contest escalated. The owner often moved the major cheliped forward, similar to a fencing weapon, before escalation. Such movement of the owner seems to be effective to prevent the intruders from approaching, and the regenerated cheliped of the owner may not require much robustness and strength as a defensive weapon before escalation. Rapid regeneration of the major cheliped in P. middendorffii would therefore be beneficial to minimize the disadvantages incurred by loss of the major cheliped.
収録刊行物
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- Plankton and Benthos Research
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Plankton and Benthos Research 9 (2), 122-131, 2014
日本プランクトン学会、日本ベントス学会
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詳細情報 詳細情報について
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- CRID
- 1390282680241529472
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- NII論文ID
- 130004685320
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- NII書誌ID
- AA12130745
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- ISSN
- 1882627X
- 18808247
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- NDL書誌ID
- 025496380
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- NDLサーチ
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
