There is plenty of room at the bottom: microclimates drive insect vulnerability to climate change

Pincebourde, Sylvain; Woods, H. Arthur

doi:10.1016/j.cois.2020.07.001

Cited by 102 publications

(88 citation statements)

References 71 publications

(84 reference statements)

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“…Based on our study, we reinforce the need to take into account fine‐scale data on habitat use and ecological resources for a better understanding of the mechanisms behind range shifts under climate change (Chave, 2013; Pincebourde & Woods, 2020; Potter et al., 2013). Fine‐scale data are collected at spatial and temporal scales congruent with the functional environmental relationships of the study organism, including its thermal environment (Bennie et al., 2013; Suggitt et al., 2012; Turlure et al., 2010).…”

Section: Discussionsupporting

confidence: 67%

Range expansion, habitat use, and choosiness in a butterfly under climate change: Marginality and tolerance of oviposition site selection

Martin

Titeux

Dyck

2021

Ecology and Evolution

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Poleward range shifts under climate change involve the colonization of new sites and hence the foundation of new populations at the expanding edge. We studied oviposition site selection in a butterfly under range expansion (Lycaena dispar), a key process for the establishment of new populations. We described and compared the microhabitats used by the species for egg laying with those available across the study sites both in edge and in core populations. We carried out an ecological niche factor analysis (ENFA) to estimate (1) the variety of microhabitats used by the butterfly for egg laying (tolerance) and (2) the extent to which these selected microhabitats deviated from those available (marginality). Microhabitat availability was similar in edge and core populations. Ambient temperature recorded at the site level above the vegetation was on average lower at core populations. In contrast with what is often assumed, edge populations did not have narrower microhabitat use compared to core populations. Females in edge populations even showed a higher degree of generalism: They laid eggs under a wider range of microhabitats. We suggest that this pattern could be related to an overrepresentation of fast deciding personalities in edge populations. We also showed that the thermal time window for active female behavior was reduced in edge populations, which could significantly decrease the time budget for oviposition and decrease the threshold of acceptance during microhabitat selection for oviposition in recently established populations.

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Section: Discussionsupporting

confidence: 67%

Range expansion, habitat use, and choosiness in a butterfly under climate change: Marginality and tolerance of oviposition site selection

Martin

Titeux

Dyck

2021

Ecology and Evolution

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“…Insects employ different adaptive mechanisms to counteract stressful low temperatures (Chown & Nicolson 2004;Denlinger & Lee 2010a;Isobe et al 2013). Behavioural microhabitat selection often forms the first line of defence and is increasingly being shown as a key driver of insect vulnerability to climate change (Pincebourde & Woods 2020). For example, migration to warmer habitats, thermoregulation through basking, thermal respites, cessation of feeding and expulsion of gut contents are key behavioural survival strategies (Lee 1991;Bale 2002;reviewed in Andreadis and Athanassiou 2017;Raza et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, climate change has also increased incidence of cold snaps (Tollefson 2014). As such, in situ survival of these stressors, for example, through behavioural microhabitat selection (Pincebourde & Woods 2020) and or physiological adaptation is key for species success (Sheikh et al . 2017).…”

Section: Introductionmentioning

confidence: 99%

Developmental stage variation inSpodoptera frugiperda(Lepidoptera: Noctuidae) low temperature tolerance: implications for overwintering

et al. 2021

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The fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera: Noctuidae) is a very destructive polyphagous insect pest of cereal crops accounting for up to 100% yield losses. To survive winter low temperatures in the Americas, adults FAW are known to migrate south for warmer climates and then re-invade northern USA and Canada the following summer. Since its African invasion, no studies have looked at its overwintering biology. Specifically, there is no information on in situ ontogenetic low temperature tolerance, despite its significance in explaining overwintering survival. Here, we thus investigated low temperature tolerance of FAW larvae (3rd, 4th, 5th and 6th) and adults from field populations through assessing basal stress tolerance (critical thermal minima [CT min ], supercooling point [SCP] and chill coma recovery time [CCRT]) and plasticity using standardized protocols. Our results showed significant life stage effects on low temperature tolerance, although all were chillsusceptible. Adults had lower CT min and CCRT than larvae (higher cold tolerance). However, early instar larvae had significantly depressed SCPs than later instars and adults. All larval instars tested showed no plastic responses to CT min , while for adults, cold hardening appeared to come at a cost of CT min . These results suggest ontogenetic differences in S. frugiperda cold hardiness albeit all are susceptible to chilling. Second, the absence or cost of hardening confirms FAW's maladaptation to low temperatures. However, Botswana microclimate records show that severe low temperature stress is limited, and thus, in situ overwintering is possible. These results are important in developing informed pest management options for effective management of FAW in Africa.

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“…Furthermore, the current study only measured basal thermal traits, and further exploration of other physiological-mediated traits driving the fate of predatorprey interactions within aquatic heterogeneous systems is needed. In particular, behavioural microclimate selection often drives invertebrate vulnerability to shifting climates [86]. Thus, the role of behaviour in modulating thermal fitness and how this may reshape predator-prey interactions also ought to be investigated.…”

Section: Discussionmentioning

confidence: 99%

Implications of increasing temperature stress for predatory biocontrol of vector mosquitoes

et al. 2020

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Background Predators play a critical role in regulating larval mosquito prey populations in aquatic habitats. Understanding predator-prey responses to climate change-induced environmental perturbations may foster optimal efficacy in vector reduction. However, organisms may differentially respond to heterogeneous thermal environments, potentially destabilizing predator-prey trophic systems. Methods Here, we explored the critical thermal limits of activity (CTLs; critical thermal-maxima [CTmax] and minima [CTmin]) of key predator-prey species. We concurrently examined CTL asynchrony of two notonectid predators (Anisops sardea and Enithares chinai) and one copepod predator (Lovenula falcifera) as well as larvae of three vector mosquito species, Aedes aegypti, Anopheles quadriannulatus and Culex pipiens, across instar stages (early, 1st; intermediate, 2nd/3rd; late, 4th). Results Overall, predators and prey differed significantly in CTmax and CTmin. Predators generally had lower CTLs than mosquito prey, dependent on prey instar stage and species, with first instars having the lowest CTmax (lowest warm tolerance), but also the lowest CTmin (highest cold tolerance). For predators, L. falcifera exhibited the narrowest CTLs overall, with E. chinai having the widest and A. sardea intermediate CTLs, respectively. Among prey species, the global invader Ae. aegypti consistently exhibited the highest CTmax, whilst differences among CTmin were inconsistent among prey species according to instar stage. Conclusion These results point to significant predator-prey mismatches under environmental change, potentially adversely affecting natural mosquito biocontrol given projected shifts in temperature fluctuations in the study region. The overall narrower thermal breadth of native predators relative to larval mosquito prey may reduce natural biotic resistance to pests and harmful mosquito species, with implications for population success and potentially vector capacity under global change.

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There is plenty of room at the bottom: microclimates drive insect vulnerability to climate change

Cited by 102 publications

References 71 publications

Range expansion, habitat use, and choosiness in a butterfly under climate change: Marginality and tolerance of oviposition site selection

Range expansion, habitat use, and choosiness in a butterfly under climate change: Marginality and tolerance of oviposition site selection

Developmental stage variation inSpodoptera frugiperda(Lepidoptera: Noctuidae) low temperature tolerance: implications for overwintering

Implications of increasing temperature stress for predatory biocontrol of vector mosquitoes

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