Agricultural and Forest Entomology (2017) 19, 192-199

Guillaume David, Brice Giffard, Dominique Piou, Alain Roques and Hervé Jactel (2017)
Potential effects of climate warming on the survivorship of adult Monochamus galloprovincialis
Agricultural and Forest Entomology 19 (2), 192-199
Abstract: - 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Alain Roques, Hervé Jactel

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Monochamus galloprovincialis