The force needed for leg autotomy in the crab Hemigrapsus nudus

IF 0.9 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Marine and Freshwater Behaviour and Physiology Pub Date : 2018-05-04 DOI:10.1080/10236244.2018.1509674

Tara E. Prestholdt, Stephanie M. Rager, Jake N. Williams, C. Weilhoefer

引用次数: 4

Abstract

ABSTRACT Autotomy is the ability to shed an appendage, and arthropods can autotomize to escape predation or a fouled molting event. Myriad aspects of autotomy have been previously explored, yet quantitative data on the force needed to induce autotomy is lacking. We tested three leg types in Hemigrapsus nudus, and our results showed that hind legs require the most amount of force to autotomize (~45 N-s) compared to claws (~28 N-s) or middle walking legs (~22 N-s). These results rejected our null hypothesis that all legs require an equal amount of force to autotomize as well as our alternate hypothesis that larger legs would require more force than smaller legs. Previous research has suggested that the propensity to autotomize could correlate with the type of appendage, and while we are unable to provide an evolutionary explanation for our results, it is exciting to have some quantitative force data for future studies.

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蟹裸半乳自切腿所需的力

自切是一种脱落附属物的能力，节肢动物可以自动地逃避捕食或肮脏的蜕皮事件。自体切开术的许多方面以前已经被探讨过，但缺乏诱导自体切开术所需的力量的定量数据。我们测试了三种类型的裸半石龙的腿，结果表明，与爪子(~28 N-s)或中间行走腿(~22 N-s)相比，后腿需要最大的力来实现自动化(~45 N-s)。这些结果否定了我们的零假设，即所有腿都需要相同的力来实现自动化，以及我们的备用假设，即大腿比小腿需要更多的力。先前的研究表明，自动化的倾向可能与附属物的类型有关，虽然我们无法为我们的结果提供进化的解释，但为未来的研究提供一些定量的力数据是令人兴奋的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine and Freshwater Behaviour and Physiology 生物-海洋与淡水生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Marine and Freshwater Behaviour and Physiology is devoted to the publication of papers covering field and laboratory research into all aspects of the behaviour and physiology of all marine and freshwater animals within the contexts of ecology, evolution and conservation. As the living resources of the world’s oceans, rivers and lakes are attracting increasing attention as food sources for humans and for their role in global ecology, the journal will also publish the results of research in the areas of fisheries biology and technology where the behaviour and physiology described have clear links to the contexts mentioned above. The journal will accept for publication Research Articles, Reviews, Rapid Communications and Technical Notes (see Instructions for authors for details). In addition, Editorials, Opinions and Book Reviews (invited and suggested) will also occasionally be published. Suggestions to the Editor-In-Chief for Special Issues are encouraged and will be considered on an ad hoc basis. With the goal of supporting early career researchers, the journal particularly invites submissions from graduate students and post-doctoral researchers. In addition to recognising the time constraints and logistical limitations their research often faces, and their particular need for a prompt review process, accepted articles by such researchers will be given prominence within the journal (see Instructions for authors for details).