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首页> 外文期刊>The Journal of Experimental Biology >Effects of within-generation thermal history on the flight performance of Ceratitis capitata: colder is better
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Effects of within-generation thermal history on the flight performance of Ceratitis capitata: colder is better

机译：代内热史对人状角膜炎飞行性能的影响：越冷越好

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摘要

The influence of thermal history on temperature-dependent flight performance was investigated in an invasive agricultural pest insect, Ceratitis capitata (Diptera: Tephritidae). Flies were exposed to one of four developmental acclimation temperatures (T-acc: 15, 20, 25, 30 degrees C) during their pupal stage and tested at these temperatures (T-test) as adults using a full-factorial study design. Major factors influencing flight performance included sex, body mass, T-test and the interaction between T-test and T-acc. Successful flight performance increased with increasing T-test across all acclimation groups (from 10% at 15 degrees C to 77% at 30 degrees C). Although T-acc did not affect flight performance independently, it did have a significant interaction effect with T-test. Multiple comparisons showed that flies which had been acclimated to 15 degrees C and 20 degrees C performed better than those acclimated to 25 degrees C and 30 degrees C when tested at cold temperatures, but warm-acclimated flies did not outperform cold-acclimated flies at warmer temperatures. This provides partial support for the 'colder is better' hypothesis. To explain these results, several flight-related traits were examined to determine whether T-acc influenced flight performance as a consequence of changes in body or wing morphology, whole-animal metabolic rate or cytochrome c oxidase enzyme activity. Although significant effects of T-acc could be detected in several of the traits examined, with an emphasis on sex-related differences, increased flight performance could not be explained solely on the basis of changes in any of these traits. Overall, these results are important for understanding dispersal physiology despite the fact that the mechanisms of acclimation-related changes in flight performance remain unresolved
机译：在侵袭性农业害虫中发现了热史对温度依赖性飞行性能的影响，该昆虫为角实角实蝇（Diptera：Tephritidae）。苍蝇在p期处于四个发育适应温度（T-acc：15、20、25、30摄氏度）之一，成年后使用全要素研究设计在这些温度下进行测试（T-test）。影响飞行性能的主要因素包括性别，体重，T检验以及T检验和T-acc之间的相互作用。在所有适应组中，成功的飞行性能都随着T检验的提高而提高（从15摄氏度下的10％增加到30摄氏度下的77％）。尽管T-acc不会独立影响飞行性能，但它确实与T-test有显着的交互作用。多重比较显示，在寒冷的温度下进行测试时，适应于15摄氏度和20摄氏度的果蝇的性能要优于适应于25摄氏度和30摄氏度的果蝇，但是温热的果蝇在暖和的温度下并不胜过冷适应的果蝇。温度。这为“冷淡者更好”的假设提供了部分支持。为了解释这些结果，研究了几种与飞行有关的性状，以确定T-acc是否由于机体或机翼形态，全动物代谢率或细胞色素c氧化酶活性的变化而影响了飞行性能。尽管可以在所检查的多个特征中检测到T-acc的显着效果，并着重于与性别相关的差异，但不能仅根据这些特征中的任何变化来解释飞行性能的提高。总体而言，尽管与飞行相关的适应性变化机制仍未解决，但这些结果对于理解弥散生理很重要。

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