高温会增强入侵蜥蜴对本地同类的攻击性。

IF 2.9 2区 生物学 Q2 BIOLOGY
Julie E. Rej, Alex R. Gunderson
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引用次数: 0

摘要

入侵物种对当地野生动物造成重大干扰,并经常取代本地物种。行为攻击有助于入侵物种的成功,但对温度和攻击如何相互作用知之甚少。我们测试了温度对入侵的棕色变色蜥(Anolis sagrei)和本地同类绿色变色蜥(a . carolinensis)之间种间攻击的影响。在同栖系统中,Anolis sagrei取代了A. carolinensis在栖地的位置,这被假设至少部分是由于更高水平的侵略。我们测试了关于种间攻击在五个生态相关温度状态下的温度依赖性假设,这些温度状态从凉爽的春季到炎热的夏季。此外,我们还测试了萨格瑞草的存在是否会破坏卡罗林草的体温调节。在所有温度条件下,入侵的沙绿石线虫都比卡洛林石线虫更具侵略性。此外,在高温下,物种之间的攻击差异最大。相比之下,我们发现很少有证据表明卡罗林杉的体温调节受到萨格雷的影响。我们的研究结果表明,高水平的攻击性可能会促进入侵蜥蜴对本地竞争对手的影响,这种攻击性可能会随着气温的升高而被放大。总体而言,我们的研究结果与侵略促进入侵物种成功的观点是一致的,并且在气候变化的情况下,这种影响可以被放大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
High temperatures amplify aggressiveness of an invasive lizard toward a native congener
Invasive species cause major disturbances to endemic wildlife and often displace native species. Behavioral aggression can contribute to invasive species success, but little is known about how temperature and aggression interact. We tested for effects of temperature on interspecific aggression between the invasive brown anole lizard (Anolis sagrei) and a native congener, the green anole (A. carolinensis). Anolis sagrei displaces A. carolinensis from perch sites in sympatry, which is hypothesized to result at least in part from higher levels of aggression. We tested hypotheses about the temperature-dependence of interspecific aggression across five ecologically relevant temperature regimes that span cool spring to hot summer conditions. Additionally, we tested whether the presence of A. sagrei disrupts A. carolinensis thermoregulation. The invasive Anolis sagrei was more aggressive than A. carolinensis in all temperature regimes. In addition, the difference in aggression between the species was greatest at high temperatures. In contrast, we found little evidence that A. carolinensis thermoregulation is affected by A. sagrei. Our results indicate that the effects of an invasive lizard on a native competitor may be facilitated by high levels of aggression that could be amplified with rising temperatures. Overall, our results are consistent with aggression facilitating invasive species success, and that the effect can be amplified under climate change.
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来源期刊
Journal of thermal biology
Journal of thermal biology 生物-动物学
CiteScore
5.30
自引率
7.40%
发文量
196
审稿时长
14.5 weeks
期刊介绍: The Journal of Thermal Biology publishes articles that advance our knowledge on the ways and mechanisms through which temperature affects man and animals. This includes studies of their responses to these effects and on the ecological consequences. Directly relevant to this theme are: • The mechanisms of thermal limitation, heat and cold injury, and the resistance of organisms to extremes of temperature • The mechanisms involved in acclimation, acclimatization and evolutionary adaptation to temperature • Mechanisms underlying the patterns of hibernation, torpor, dormancy, aestivation and diapause • Effects of temperature on reproduction and development, growth, ageing and life-span • Studies on modelling heat transfer between organisms and their environment • The contributions of temperature to effects of climate change on animal species and man • Studies of conservation biology and physiology related to temperature • Behavioural and physiological regulation of body temperature including its pathophysiology and fever • Medical applications of hypo- and hyperthermia Article types: • Original articles • Review articles
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