Potential effects of climate warming on the survivorship of adult Monochamus galloprovincialis
Potential effects of climate warming on the survivorship of adult Monochamus galloprovincialis
复制标题
气候变暖对成年Monochamus galloprovincialis生存的潜在影响
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
H. Jactel
中科院分区：
文献类型：
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作者：
G. David;Brice Giffard;D. Piou;A. Roques;H. Jactel
生态学家广泛地探讨了气候变化对昆虫物种分布和适应性的影响。虽然大多数研究都评估了平均温度升高对个体性能的影响，但对时间热变化的响应，包括极端温度的幅度和频率，往往被忽视。在本研究中，我们假设昆虫的性能随平均温度的升高而增加，但在更可变的热条件下会下降。采用操纵实验方法，比较了在日平均温度和日平均温度均受控制的3种气候条件下，牛虻的寿命和体重的变化。这种昆虫是入侵线虫的媒介，木耳线虫是松树枯萎病的病原体，是欧洲松林的主要威胁之一。结果表明，平均温度升高2.5°C对甲虫的存活率和体重变化没有影响。相比之下，全年较大的温度波动变化导致寿命显著降低，而体重保持不变。本研究结果表明，全球变暖对加洛省分枝杆菌生存的影响可能是由温度稳定性的变化而不是平均温度的变化驱动的。
Ecologists have explored widely the consequences of climate change on insect species distribution and fitness. Although most studies have assessed the effect of increasing mean temperatures on individual performances, the response to temporal thermal variations, including the magnitude and frequency of extreme temperatures, has often been overlooked. In the present study, we hypothesized that insect performances increase with increasing mean temperatures but decrease under more variable thermal conditions. We used a manipulative experiment to compare the longevity and weight variation of Monochamus galloprovincialis (Coleoptera: Cerambycidae) under three climatic conditions in which the mean and variance of daily temperatures were both controlled. This insect is vector of the invasive nematode, Bursapheluncus xylophilus, which is the causal agent of the pine wilt disease, one of the major threats to pine forests in Europe. Our results showed that an increase of 2.5 °C in average temperature had no effect on the survivorship and weight variations of the beetle. By contrast, larger fluctuating variations of temperature across year resulted in significantly lower longevity, whereas weight remained unchanged. The results of the present study suggest that the effect of global warming on the survival of M. galloprovincialis is likely to be driven by change in temperature stability rather than by change in mean temperature.
DOI：
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发表时间：
2015-10
期刊：
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影响因子：
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作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
通讯作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
影响因子：
4.8
作者：
Garcia-Carreras, Bernardo;Reuman, Daniel C.
通讯作者：
Reuman, Daniel C.