High incidence of leg autotomy in urban crickets

High incidence of leg autotomy in urban crickets
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城市蟋蟀腿部自切发生率高

DOI:
10.1163/1568539x-bja10206
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发表时间:
2023
期刊:
影响因子:
1.3
通讯作者:
Kawanishi Motohiro
Kawanishi Motohiro
中科院分区:
生物学4区
文献类型:
--
作者:
Kuriwada Takashi;Shindome Seiya;Tomita Yuki;Kawanishi Motohiro

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捕食是影响动物的重要选择压力。捕食有消耗和非致死作用。由于通常难以估计非致死效应发生的程度,我们将重点放在了自残上,作为城市栖息地发生非致死效应的一个指标。自残表明个体已经逃离了捕食者。比较了城市和农村蟋蟀黑筋膜斑蝶腿自切开术的发生率。城市的自切率高于农村。在这些蟋蟀中,蜕皮失败和同种攻击性相互作用并不是导致自切发生率的主要因素。在不同的生境中,自残的容易程度和冒险倾向没有差异。这些结果表明,自切的发生率反映了捕食失败,而非致命的捕食效应更可能发生在城市栖息地。
Predation is an important selection pressure affecting animals. Predation has both consumptive and non-lethal effects. Because it is often difficult to estimate the extent to which non-lethal effects occur, we focused on autotomy as an indicator of non-lethal effects occurring in urban habitats. Autotomy is expected to indicate that individuals have escaped from predators. The incidence of leg autotomy in the cricketDianemobius nigrofasciatuswas compared between urban and rural habitats. The incidence of autotomy was higher in urban than in rural habitats. Failure to moult and conspecific aggressive interactions were not the main factors contributing to the incidence of autotomy in these crickets. The ease of autotomy and risk-taking tendencies did not differ among habitats. These results indicate that the incidence of autotomy reflects predation failure, and the non-lethal effects of predation are more likely to occur in urban habitats.
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