Adaptations to thermal stress in social insects: recent advances and future directions

Perez, Rémy

doi:10.1111/brv.12628

Cited by 50 publications

(45 citation statements)

References 222 publications

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“…Although most studies to date have focused on the consequences of gradual climatic modifications, higher intensity and frequency of extreme events of temperature variation could be a more serious threat than the gradual increase in average temperatures (Hance et al 2007;Kingsolver & Buckley 2017). Hyperthermic stress, notably induced by heat waves, is associated with physiological perturbations (Parmesan et al 2000;Hance et al 2007;Kingsolver & Buckley 2017), mortality (Neven 2000;Parmesan 2006;Kingsolver et al 2013), and behavioral changes (i.e., stupor, characterized by a critical decrease in motor function and inability to escape from conditions) (Perez & Aron 2020).…”

Section: Introductionmentioning

confidence: 99%

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Global effects of extreme temperatures on wild bumblebees

Martinet

Dellicour

Ghisbain

et al. 2021

Conservation Biology

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Climate plays a key role in shaping population trends and determining the geographic distribution of species because of limits in species' thermal tolerance. An evaluation of species tolerance to temperature change can therefore help predict their potential spatial shifts and population trends triggered by ongoing global warming. We assessed inter-and intraspecific variations in heat resistance in relation to body mass, local mean temperatures, and evolutionary relationships in 39 bumblebee species, a major group of pollinators in temperate and cold ecosystems, across 3 continents, 6 biomes, and 20 regions (2386 male specimens). Based on experimental bioassays, we measured the time before heat stupor of bumblebee males at a heatwave temperature of 40°C. Interspecific variability was significant, in contrast to interpopulational variability, which was consistent with heat resistance being a species-specific trait. Moreover, cold-adapted species are much more sensitive to heat stress than temperate and Mediterranean species. Relative to their sensitivity to extreme temperatures, our results help explain recent population declines and range shifts in bumblebees following climate change.

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Section: Introductionmentioning

confidence: 99%

“…2007; Kingsolver & Buckley 2017), mortality (Neven 2000; Parmesan 2006; Kingsolver et al. 2013), and behavioral changes (i.e., stupor, characterized by a critical decrease in motor function and inability to escape from conditions) (Perez & Aron 2020).…”

Section: Introductionmentioning

confidence: 99%

Global effects of extreme temperatures on wild bumblebees

Martinet

Dellicour

Ghisbain

et al. 2021

Conservation Biology

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“…Hence, our results highlight differences that are related exclusively to high temperatures; they cannot speak to other environmental challenges such as intense solar radiation. We predict that, under natural conditions, thermal tolerance should actually differ across Cataglyphis species because they each have unique behavioural, morphological and physiological adaptations that should lead to different levels of heat-stress resistance (see the Introduction; Boulay et al, 2017;Perez & Aron, 2020). For example, in nature, C. bombycina can use its prism-shaped hairs to reflect solar radiation via total internal reflection, thus boosting its heat tolerance and limiting heat absorption when exposed to direct sunlight (Shi et al, 2015;Willot et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Likewise, the accumulation of ROS can be dampened via the production of antioxidants and detoxification enzymes, such as superoxide dismutase (SOD) or glutathione peroxidase (GPx) (Birben et al, 2012). Over the last decade, an increasing number of studies have investigated HSRs in both vertebrates and invertebrates (reviewed in Heikkila, 2017;Lockwood et al, 2015;Logan & Buckley, 2015;Perez & Aron, 2020). However, most of this research has been devoted to mesophilic species living in environments with moderate temperatures; in contrast, few studies have looked at thermophilic species living in hot, arid climates.…”

Section: Introductionmentioning

confidence: 99%

Molecular adaptations to heat stress in the thermophilic ant genus Cataglyphis

2021

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Over the last decade, increasing attention has been paid to the molecular adaptations used by organisms to cope with thermal stress. However, to date, few studies have focused on thermophilic species living in hot, arid climates. In this study, we explored molecular adaptations to heat stress in the thermophilic ant genus Cataglyphis, one of the world's most thermotolerant animal taxa. We compared heat tolerance and gene expression patterns across six Cataglyphis species from distinct phylogenetic groups that live in different habitats and experience different thermal regimes. We found that all six species had high heat tolerance levels with critical thermal maxima (CT max ) ranging from 43℃ to 45℃ and a median lethal temperature (LT50) ranging from 44.5℃ to 46.8℃. Transcriptome analyses revealed that, although the number of differentially expressed genes varied widely for the six species (from 54 to 1118), many were also shared. Functional annotation of the differentially expressed and co-expressed genes showed that the biological pathways involved in heat-shock responses were similar among species and were associated with four major processes: the regulation of transcriptional machinery and DNA metabolism; the preservation of proteome stability; the elimination of toxic residues; and the maintenance of cellular integrity. Overall, our results suggest that molecular responses to heat stress have been evolutionarily conserved in the ant genus Cataglyphis and that their diversity may help workers withstand temperatures close to their physiological limits.

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“…Temperature strongly influences the foraging activity of ectothermic animals, such as ants, as high surface temperatures are correlated with increasing risks of desiccation or heat stress (e.g. Cerdá et al 1998;Chung and Lin 2017;Friedman et al 2019;Perez and Aron 2020). There are some species among ants that are well adapted to live in habitats with extremely high temperatures, such as deserts or sand dunes (Cerdá and Retana 2000;Cerdá 2001;Boulay et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The influence of age and development temperature on the temperature-related foraging risk of Formica cinerea ants

Ślipiński

Trigos-Peral

Maák

et al. 2021

Behav Ecol Sociobiol

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Climate change and the subsequent increase of global temperature are the most current and important threats to biodiversity. Despite the importance of temperature, our knowledge about the level of behavioural and physiological adaptations of ant species from temperate regions to cope with high temperatures is limited compared to the broad knowledge of typical thermal specialists from warmer regions. In the current study, we investigated the temperature-related foraging risk of xerothermic ant species from the temperate climate in Europe, Formica cinerea. Our aims were to check how an increase in external soil temperature affects the foraging activity of workers and how the temperature during development and worker age affects foraging activity in high temperatures. Based on our results, we can draw the following conclusions: (1) the majority of workers utilize a risk-aversive strategy in relation to foraging in high surface temperatures; (2) pupal development temperature affects the risk taken by adult workers: workers that developed in a higher temperature forage more often but for shorter intervals compared to workers that developed in a lower temperature; (3) age is an important factor in temperature-related foraging activity, as with increasing age, workers forage significantly longer at the highest temperatures. Our study is one of the first to assess the potential factors that can affect the foraging risk of ants from a temperate climate in high ambient temperatures. Significance statement Our study is the first direct test of workers' age and the development temperature of pupae on the thermal-related foraging strategy of adult F. cinerea workers. It shows that worker age and the development temperature of pupae interact to promote tolerance of thermal stress. We found that with increasing age, workers are prone to forage significantly longer at the highest and riskiest temperatures. Workers that developed in the high temperature (28°C) foraged more often but for shorter intervals compared to workers that developed in the lower temperature (20°C). Interestingly, the factor of age is more significant for ants that developed in the higher temperature of 28°C; the foraging time of these ants significantly increased with their age.

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Adaptations to thermal stress in social insects: recent advances and future directions

Cited by 50 publications

References 222 publications

Global effects of extreme temperatures on wild bumblebees

Global effects of extreme temperatures on wild bumblebees

Molecular adaptations to heat stress in the thermophilic ant genus Cataglyphis

The influence of age and development temperature on the temperature-related foraging risk of Formica cinerea ants

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