活得快,死得早?昼夜增温对田间毛虫的生长、生存和行为都有影响

IF 4.3 2区 环境科学与生态学 Q1 ECOLOGY
Ecology Pub Date : 2025-07-03 DOI:10.1002/ecy.70150
Louie H. Yang, Elizabeth G. Postema, Heran Arefaine, Fernanda Y. Cohoon, Emma A. Deen, Yvonne L. Durand, Gwendolyn I. Erdosh, Hailey Ma, Courtney N. Mausling, Sarah Solís, Madeline R. Wilson
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引用次数: 0

摘要

虽然白天和夜间的温度都随着气候变化而升高,但很少有研究通过实验调查它们在野外条件下的差异影响。我们进行了一项析因田间实验,研究了昼夜增温对卷心菜白毛虫(Pieris rapae)生长、存活和行为的影响。在本试验中,仅夜温处理的毛虫生长速率最高,但死亡率最高,毛虫最大长度最短,累积草食量最少,化蛹量减少。白天不加温处理的幼虫表现出昼移生长,昼夜加温处理的幼虫表现出强烈的夜移食草性。生物(例如,捕食风险)和非生物(例如,热)因素都可能导致这些结果。总的来说,这些结果表明温度介导的行为变化对毛虫的发育和生存的重要性。这些结果也支持了新出现的假设,即活动减少的时期可能对成功发育很重要,温暖的夜间条件可能限制毛毛虫暂时的热避难所,升高的温度可能会增加代谢崩溃的可能性。该实验还说明了实地研究的价值,可以深入了解变温动物如何应对持续的气候变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Live fast, die young? Day- and night-warming affect the growth, survivorship, and behavior of caterpillars in the field

Live fast, die young? Day- and night-warming affect the growth, survivorship, and behavior of caterpillars in the field

While both daytime and nighttime temperatures are increasing with climate change, few studies have experimentally investigated their differential effects under field conditions. We conducted a factorial field experiment examining how day- and night-warming impact the growth, survivorship, and behavior of cabbage white caterpillars (Pieris rapae). In this experiment, the night-warming only treatment showed the highest rates of caterpillar growth, but also showed the highest mortality, the shortest maximum caterpillar lengths, the least accumulated herbivory, and reduced pupation. Caterpillars in the treatments that were not warmed during the day showed daytime-shifted growth, and caterpillars in the combined day- and night-warming treatment showed strongly night-shifted herbivory. Both biotic (e.g., predation risk) and abiotic (e.g., thermal) factors could have contributed to these results. Broadly, these results show the importance of temperature-mediated behavioral changes in diel activity for caterpillar development and survival. These results also support the emerging hypotheses that periods of reduced activity may be important for successful development, that warmer nighttime conditions could limit a temporal thermal refuge for caterpillars, and that increasing temperatures could increase the likelihood of metabolic meltdown. This experiment also illustrates the value of field studies to provide insights into how ectotherms might respond to ongoing climate change.

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来源期刊
Ecology
Ecology 环境科学-生态学
CiteScore
8.30
自引率
2.10%
发文量
332
审稿时长
3 months
期刊介绍: Ecology publishes articles that report on the basic elements of ecological research. Emphasis is placed on concise, clear articles documenting important ecological phenomena. The journal publishes a broad array of research that includes a rapidly expanding envelope of subject matter, techniques, approaches, and concepts: paleoecology through present-day phenomena; evolutionary, population, physiological, community, and ecosystem ecology, as well as biogeochemistry; inclusive of descriptive, comparative, experimental, mathematical, statistical, and interdisciplinary approaches.
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