Life stage‐dependent effects of experimental heat waves on an insect herbivore

Chiu, Ming‐Chih; Kuo, Jing-Jr; Kuo, Mei‐Hwa

doi:10.1111/een.12173

Cited by 30 publications

(23 citation statements)

References 55 publications

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“…MRR and SIT) or decreased differences in fitness using refined transgenesis under current and future climate conditions. As a direct measure of Darwinian fitness (Demetrius & Ziehe, 2007), the intrinsic rate of population growth has been used to compare growth differences in populations under various environmental conditions (Davis, Radcliffe, & Ragsdale, 2006;Kuo, Lu, Chiu, Kuo, & Hwang, 2006;Lu & Kuo, 2008 (Chiu et al, 2015;Hazell et al, 2010;Kuo, Chiu, & Perng, 2006). Our study confirmed the significant effects of temperature on these life-history traits and indicated that the optimal temperature of wild and transgenic B. dorsalis existed at and below our experimental warming range, respectively.…”

Section: Discussionsupporting

confidence: 69%

Effects of experimental warming on wild and transgenic oriental fruit fly, Bactrocera dorsalis

Chiu

et al. 2019

J Applied Entomology

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Climate change may influence the application efficiency of transgenic marking, such as in mark–release–recapture (MRR) experiments or sterile insect technique (SIT). Wild and transgenic fruit flies of Bactrocera dorsalis were subjected to oscillating regimes that represent current temperature conditions (mean: 28.6°C) and various future possible scenarios (means: 30.0, 32.5 and 35.0°C). As the temperature was increased to 30.0°C, the negative effects on adult fecundity and demographic parameters (net reproductive rate and intrinsic rate of increase) of only the transgenic cohorts increased. With a moderate warming (32.5°C), negative effects were observed on the net reproductive rate for both fly strains, and these effects on the life‐history traits (adult fecundity and longevity) and intrinsic rate of increase were stronger in the transgenic than in the wild cohorts, with reference to the trait values at 30.0°C. A severe warming (35.0°C) resulted in the failure of all individuals of both fly strains to reach adulthood. We suggest parametrical adjustments or decreased differences in fitness with refined transgenesis under current and future climate conditions, which can reduce the marking limitations of pest management and eradication programmes.

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Section: Discussionsupporting

confidence: 69%

Effects of experimental warming on wild and transgenic oriental fruit fly, Bactrocera dorsalis

Chiu

et al. 2019

J Applied Entomology

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“…We suspect that these differences, amounting to nearly 4 °C in total, are ecologically highly relevant. Still too often, our view on insect life histories is dominated by a single stage, mainly the adult one, only (Kingsolver, ; Kingsolver et al ., ; Radchuk et al ., ; Chiu et al ., ). Our data clearly indicate that eggs and hatchlings are very sensitive to heat while others such as pupae are less susceptible.…”

Section: Discussionmentioning

confidence: 97%

“…A potentially crucial aspect of thermal biology has hitherto received surprisingly little attention, namely variation in thermal limits throughout ontogeny (Bowler & Terblanche, 2008;Kingsolver et al, 2011;Chiu et al, 2015;Pincebourde & Casas, 2015). In particular, in arthropods, our view on organismal biology is still too often focussed on the typically more conspicuous adult stage (Kingsolver, 2009;Kingsolver et al, 2011;Radchuk et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Heat resistance throughout ontogeny: body size constrains thermal tolerance

Klockmann

Günter

Fischer

2016

Global Change Biology

135

107

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Heat tolerance is a trait of paramount ecological importance and may determine a species' ability to cope with ongoing climate change. Although critical thermal limits have consequently received substantial attention in recent years, their potential variation throughout ontogeny remained largely neglected. We investigate whether such neglect may bias conclusions regarding a species' sensitivity to climate change. Using a tropical butterfly, we found that developmental stages clearly differed in heat tolerance. It was highest in pupae followed by larvae, adults and finally eggs and hatchlings. Strikingly, most of the variation found in thermal tolerance was explained by differences in body mass, which may thus impose a severe constraint on adaptive variation in stress tolerance. Furthermore, temperature acclimation was beneficial by increasing heat knock-down time and therefore immediate survival under heat stress, but it affected reproduction negatively. Extreme temperatures strongly reduced survival and subsequent reproductive success even in our highly plastic model organism, exemplifying the potentially dramatic impact of extreme weather events on biodiversity. We argue that predictions regarding a species' fate under changing environmental conditions should consider variation in thermal tolerance throughout ontogeny, variation in body mass and acclimation responses as important predictors of stress tolerance.

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“…Interestingly, studies on the impact of heat stress on pest insects are scarce. Published research testing the response of insects to extreme heat kept the experimental temperature or humidity constant with a variable duration or repeated the identical peak pattern several times (Kimura, ; Davis et al ., ; Piyaphongkul et al ., ; Chen et al ., ; Sentis et al ., ; Chiu et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Response of Drosophila suzukii (Diptera: Drosophilidae) to extreme heat and dryness

Eben

Reifenrath

Briem

et al. 2017

Agri and Forest Entomology

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1 Drosophila suzukii Matsumura (Diptera) is a polyphagous herbivore native to East Asia that develops in cultivated and wild fruits. In 2011, it appeared in Germany. In 2012, economic damage was recorded and, in 2014, the harvest of stone and soft fruits was lost in some regions. By contrast, during 2015, populations remained lower. Record temperatures and dryness might have impeded population growth during that year. 2 To test this hypothesis, flies were exposed to a 4-day simulation. We evaluated the effect of fluctuating temperature and humidity on mortality and reproduction of D. suzukii from three age classes (average age: class 1: 3 days; class 2: 11 days; class 3: 20 days). Maximum temperatures were 27, 33 and 39 ∘ C. Relative humidity oscillated between 18% and 85%. 3 Fly mortality through heat stress ranged from 50% to 80%. Higher rates died of oldest flies and females. Offspring per female did not differ between heat stressed and control groups. 4 Flies of both sexes were not sterilized through heat and dryness. Prior acclimation reduced any negative effects. 5 We concluded that heat waves and extreme dryness during 2015 were one cause of the low population densities of D. suzukii observed under field conditions.

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Life stage‐dependent effects of experimental heat waves on an insect herbivore

Cited by 30 publications

References 55 publications

Effects of experimental warming on wild and transgenic oriental fruit fly, Bactrocera dorsalis

Effects of experimental warming on wild and transgenic oriental fruit fly, Bactrocera dorsalis

Heat resistance throughout ontogeny: body size constrains thermal tolerance

Response of Drosophila suzukii (Diptera: Drosophilidae) to extreme heat and dryness

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