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首页> 外文期刊>Marine ecology >Sex-related differences in size, function and regeneration of the major cheliped in the hermit crab Pagurus filholi
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Sex-related differences in size, function and regeneration of the major cheliped in the hermit crab Pagurus filholi

机译：寄居蟹Pagurus filholi中主要螯虾的大小，功能和再生的性别相关差异

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摘要

Pagurus hermit crabs have a well-developed right cheliped (major cheliped) and in some species the major cheliped of males is longer than that of females. This paper describes sex-related differences in major cheliped length and regeneration pattern of the major cheliped in the hermit crab Pagurus filholi. We also examined the function of the major cheliped in male-male competition. Major cheliped length of males was longer than that of females in P. filholi. Males regenerated larger chelipeds than females at the first molt after experimentally induced autotomy. Body size growth in males of the regeneration group was less than that in intact males of the control group while there was no significant difference in body size growth of females between regeneration and control groups. Major cheliped length was included in the best model to explain the outcome of male-male competition and thus sexual selection appears to be a causative factor in the sex-related difference of the major cheliped length. Sex-related differences in the regeneration pattern may reflect differences in evolutionary pressures on males for large major chelipeds and females for large body size.
机译：Pagurus寄居蟹的右唇（主要为大螯虾）发育良好，在某些物种中，雄性的主要螯长于雌性。本文描述了寄居蟹Pagurus filholi的主要螯合长度和主要螯合再生模式的性别相关差异。我们还研究了主要螯合剂在男女竞争中的功能。在P. filholi中，男性的主要唇形长度比女性长。经过实验诱导的尸体解剖后，雄性在第一蜕皮中再生出比雌性更大的鹅卵石。再生组男性的体型增长小于对照组的完整男性，而再生组和对照组之间的女性体型增长没有显着差异。在最佳模型中包括了主要的鹅卵石长度，以解释男女竞争的结果，因此，性别选择似乎是主要的鹅卵石长度与性别相关的差异的成因。再生方式中与性别相关的差异可能反映了大型主要螯虾对雄性的进化压力差异，以及较大体型对雌性的进化压力差异。

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