苏氏果蝇的种群特异性寿命模式和热诱导寿命延长

IF 2.9 2区 生物学 Q2 BIOLOGY
A.C. Scannapieco , D.F. Segura , S.B. Lanzavecchia , M.C. Liendo , F.M. Norry , P. Sambucetti
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引用次数: 0

摘要

铃木果蝇是一种侵害果实软皮的入侵害虫,给商品水果生产者造成经济损失。了解其生物学是制定有害生物管理策略的关键,特别注意寿命和耐热性等生活史特征。以往的研究主要分析温度对寿命的影响,但对亚致死热处理的反应及其对寿命的潜在有益影响尚未深入探讨。我们研究了来自阿根廷气候不同地区的两种铃木木种群的热诱导寿命变化,并探讨了耐热性和耐寒性。在两个恒定温度(25和30°C)和25°C加热或冷应力处理下评估寿命。种群之间的平均寿命差异取决于温度方案和热胁迫处理,在25°C时,无论有无热胁迫,差异都是显著的。在恒定的30°C条件下,观察到两种种群的果蝇寿命缩短。温带/亚热带地区的蝇类在25℃温度下的寿命最短,热诱导寿命延长。未观察到冷胁迫处理对寿命的影响。在热耐受性方面,来自寒冷地区的果蝇比来自温带/亚热带地区的果蝇更热敏感,并且在冷胁迫后恢复得更快。我们的研究结果表明,热诱导的寿命延长可能是该物种种群表型可塑性的一个重要方面。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Population-specific patterns of longevity and thermal induced lifespan extension in Drosophila suzukii
Drosophila suzukii is an invasive pest that damages fruits of soft skin, provoking economic losses for commercial fruit producers. Understanding its biology is key for developing pest management strategies, with particular attention to life-history traits such as longevity and thermal tolerance. While previous studies mainly analyzed temperature effects on longevity, response to sub-lethal thermal treatments and its potential beneficial effects on longevity have not been explored. We examined thermal induced changes in longevity and explored heat and cold tolerance in two D. suzukii stocks derived from climatically different regions of Argentina. Longevity was assessed at two constant temperatures (25 and 30 °C) and at 25 °C with either a heat or a cold-stress treatment. Differences in mean longevity between populations were dependent on temperature regimen and thermal-stress treatment, with differences being significant at 25 °C both with and without a heat-stress. A reduced longevity was observed for flies of both stocks exposed at constant 30 °C. Longevity extension induced by heat was found in flies from the temperate/subtropical region which were also the shortest-lived flies at 25 °C. No effects of the cold-stress treatment on longevity were observed. Regarding thermal tolerance, flies from the cold region were more heat-susceptible and recovered faster after cold-stress than flies from the temperate/subtropical region. Our results evidence heat-induced lifespan extension in D. suzukii and suggest that this phenomenon could be an important aspect of population phenotypic plasticity for this species.
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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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