入侵的意大利壁虎在y形迷宫中寻找食物时胜过本土同类物种

IF 1.1 4区 生物学 Q4 BEHAVIORAL SCIENCES acta ethologica Pub Date : 2021-10-06 DOI:10.1007/s10211-021-00385-8
Anastasios Limnios, Chloe Adamopoulou, Miguel A. Carretero, Panayiotis Pafilis
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引用次数: 2

摘要

尽管生物入侵是全球生物多样性的最大威胁之一,但我们对入侵物种优于本地物种的机制的理解仍然有限,特别是在行为方面。大多数现有的研究都考察了在入侵后期有利于入侵物种的行为特征,然而,我们对入侵早期阶段,即外来物种面对新环境和必须开发新资源的阶段的认识仍然模糊不清。在这里,我们关注一个关键的行为特征,寻找食物。意大利壁虎(Podarcis siculus)已被广泛引进,并在欧洲南部和北美建立了可存活的种群。我们研究了与可能在不久的将来与之接触的两种本地同属物种——岛屿特有物种(P. milensis)和广泛分布的蜥蜴(P. erhardii)相比,P. siculus是否具有增强的探索行为和寻找食物的能力。我们进行了一个y形迷宫实验,在这个实验中,我们以一种标准的方式改变手臂上的标记,以防止学习。豆豆在寻找和消耗食物方面比其同类更有效。这种剥削的优势是持久的,更频繁和重复的。在本地物种中也发现了有趣的行为差异。一些milensis个体对探索迷宫没有兴趣,而少数p.r hardii个体即使在发现食物后仍然对食物漠不关心。我们的研究结果表明,入侵的小锥虫表现出的行为特征可以在新环境中提供更好的生存机会,从而在同源物种存在的情况下也能促进建立。这进一步支持了行为在动物入侵中起关键作用的观点。
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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Invasive Italian wall lizards outcompete native congeneric species in finding food in a Y-maze

Though biological invasions constitute one of the biggest threats for global biodiversity, our understanding of the mechanisms that enable invasive species to outperform native species is still limited, especially, in terms of behavior. Most available studies have examined behavioral traits which favor invasive species on the later stages of invasion, however, our knowledge on earlier stages, namely, when alien species face novel environments and must exploit new resources, remains obscure. Here, we focus on one crucial behavioral trait, finding food. The Italian wall lizard (Podarcis siculus) has been widely introduced and established viable populations in S. Europe and N. America. We examined whether P. siculus has enhanced exploratory behavior and abilities to find food compared to two native congeneric species with which it may come in contact in the near future, an insular endemic (P. milensis) and a widely distributed lizard (P. erhardii). We performed a Y-maze experiment, in which we varied arm markings in a standard way to prevent learning. Podarcis siculus was more efficient than its congenerics in finding and consuming food. This exploitative superiority was persistent, more frequent and repetitive. Interesting behavioral differences were also detected within the native species. Some P. milensis individuals showed no interest in exploring the maze, while few P. erhardii individuals remained rather indifferent to food even after detecting it. Our results suggest that the invasive P. siculus displays behavioral traits that could provide better opportunities for survival in the new environment and thus facilitate establishment even in the presence of congenerics. This provides further support to the idea that behavior plays a crucial role in animal invasions.

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来源期刊
acta ethologica
acta ethologica 生物-动物学
CiteScore
1.90
自引率
0.00%
发文量
18
审稿时长
>12 weeks
期刊介绍: acta ethologica publishes empirical and theoretical research papers, short communications, commentaries, reviews and book reviews as well as methods papers in the field of ethology and related disciplines, with a strong concentration on the behavior biology of humans and other animals. The journal places special emphasis on studies integrating proximate (mechanisms, development) and ultimate (function, evolution) levels in the analysis of behavior. Aspects of particular interest include: adaptive plasticity of behavior, inter-individual and geographic variations in behavior, mechanisms underlying behavior, evolutionary processes and functions of behavior, and many other topics. acta ethologica is an official journal of ISPA, CRL and the Portuguese Ethological Society (SPE)
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