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J Insect Physiol


Title:"Aged virgin adults respond to extreme heat events with phenotypic plasticity in an invasive species, Drosophila suzukii"
Author(s):Xue Q; Ma CS;
Address:"Climate Change Biology Research Group, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China. Climate Change Biology Research Group, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No 2, Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China. Electronic address: machunsen@caas.cn"
Journal Title:J Insect Physiol
Year:2020
Volume:20200110
Issue:
Page Number:104016 -
DOI: 10.1016/j.jinsphys.2020.104016
ISSN/ISBN:1879-1611 (Electronic) 0022-1910 (Linking)
Abstract:"Climate warming has increased the frequency of extreme heat events. Alien species usually invade new areas with a low-density population and often have limited mating opportunities due to the unsynchronized emergence of adults. Early-emerging virgin adults often have to wait to mate with later-emerging partners at the cost of aging, which reduces thermal tolerance. To understand the adaptive strategies of virgin males/females versus those of mated males/females in response to heat stress during aging, we conducted a fully factorial experiment to test the basal and plastic heat tolerance (CTmax, critical thermal maximum) of males and females with different mating statuses (virgin and mated) at different ages (5, 10, and 15 days after eclosion) after different acclimation regimes (null, rapid and developmental heat acclimation) in a well-known invasive species, Drosophila suzukii. We found that mating could change the heat tolerance of adults during aging. Mated females had higher basal heat tolerance than virgin females, while mated males had lower tolerance than virgin males. Mating could generally decrease the acclimation capacity (i.e., plasticity of heat tolerance) during aging. Aged virgin adults had a much higher acclimation capacity than aged mated adults. Our findings suggest that phenotypic plasticity of heat tolerance may be a main strategy used by virgin adults to cope with heat events. The phenotypic plasticity of thermal tolerance could increase the invasion success of alien species in new areas by allowing them to rapid respond to local temperature changes"
Keywords:"Acclimatization/*physiology Adaptation, Physiological/*physiology Age Factors Animals Drosophila/*physiology Extreme Heat Female *Introduced Species Male Mating Factor Sex Factors Stress, Physiological *Thermotolerance Aging Drosophila suzukii Heat tolera;"
Notes:"MedlineXue, Qi Ma, Chun-Sen eng Research Support, Non-U.S. Gov't England 2020/01/14 J Insect Physiol. 2020 Feb-Mar; 121:104016. doi: 10.1016/j.jinsphys.2020.104016. Epub 2020 Jan 10"

 
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