A large-effect fitness trade-off across environments is explained by a single mutation affecting cold acclimation

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(6)

Published: Jan. 30, 2024

Identifying the genetic basis of local adaptation and fitness trade-offs across environments is a central goal evolutionary biology. Cold acclimation an adaptive plastic response for surviving seasonal freezing, costs may be general mechanism in temperate zone species. Starting with locally adapted ecotypes

Language: Английский

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Morphological and biochemical responses of a neotropical pest insect to low temperatures

Journal of Thermal Biology, Journal Year: 2024, Volume and Issue: 119, P. 103795 - 103795

Published: Jan. 1, 2024

As traditionally cold areas become warmer due to climate change, temperature could no longer be a barrier the establishment of non-native insects. This is particularly relevant for pest insects from warm and tropical areas, mainly those with some tolerance moderately low temperatures, which expand their range into these new locations. From this perspective, in work we studied morphological biochemical responses Neotropical Paysandisia archon as part possible strategy colonize areas. To that end, wild larvae were exposed 7 days either (1 5 °C) or ambient (23 temperatures. We then quantified inner outer changes, by X-Ray Computer Tomography Digital Holographic Microscopy, well accumulation metabolites acting potential endogenous cryoprotectants, Spectrophotometry. found developed cold-induced response based on different aspects. On one hand, changes occurred significant reduction both fluids susceptible freezing fat body, together thickening, hardening increased roughness integument. other an increase hemolymph concentration cryoprotective substances such glucose (6-fold) glycerol (2-fold), while trehalose remained unchanged. Surprisingly, species did not show any evidence unless environmental was remarkably °C). These results useful improve models predicting spread pest, should incorporate parameters related its resistance

Language: Английский

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The rising threat of climate change for arthropods from Earth's cold regions: Taxonomic rather than native status drives species sensitivity

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(20), P. 5914 - 5927

Published: July 11, 2022

Polar and alpine regions are changing rapidly with global climate change. Yet, the impacts on biodiversity, especially invertebrate ectotherms which dominant in these areas, remain poorly understood. Short-term extreme temperature events, growing frequency, expected to have profound high-latitude ectotherms, native species being less resilient than their alien counterparts. Here, we examined laboratory effects of short periodic exposures thermal extremes survival responses seven two non-native invertebrates from sub-Antarctic Islands. We found that dipterans was significantly reduced under warming exposures, average having median lethal times (LT

Language: Английский

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Temporal regulation of temperature tolerances and gene expression in an arctic insect

Journal of Experimental Biology, Journal Year: 2023, Volume and Issue: 226(11)

Published: May 17, 2023

Terrestrial arthropods in the Arctic are exposed to highly variable temperatures that frequently reach cold and warm extremes. Yet, ecophysiological studies on arctic insects typically focus ability of species tolerate low temperatures, whereas investigating physiological adaptations periodically few. In this study, we investigated temporal changes thermal tolerances transcriptome Greenlandic seed bug Nysius groenlandicus, collected field across different times Southern Greenland. We found plastic heat occurred rapidly (within hours) at a daily scale field, these correlated with diurnal temperature variation. Using RNA sequencing, provide molecular underpinnings rapid adjustments tolerance ambient laboratory. show transcriptional responses sensitive changes, days characterized by high variation induced markedly expression patterns than thermally stable days. Further, genes associated laboratory-induced responses, including shock proteins vitellogenins, were shared laboratory experiments, but time points lower field. Cold stress not manifested transcriptomic level.

Language: Английский

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Acclimation to moderate temperatures can have strong negative impacts on heat tolerance of arctic arthropods

Functional Ecology, Journal Year: 2024, Volume and Issue: 38(7), P. 1549 - 1561

Published: May 19, 2024

Abstract The Arctic is impacted by some of the fastest temperature changes observed on Earth, but impact terrestrial arthropod fauna unclear. Acute physiological thermal limits ectotherms from high latitudes often exceed local air temperatures, suggesting that they may be able to cope with increasing temperatures. However, knowledge how arthropods elevated temperatures for longer periods lacking. Here we investigate acclimation and exposure time affect acute heat tolerance five species ( Neomolgus littoralis , Megaphorura arctica Nysius groenlandicus Psammotettix lividellus Nabis flavomarginatus ) immediately after collection in sub‐Arctic habitats. We show although tolerances are relatively high, even moderate (temperature span assessed ca. 3–29°C) a 24 h period have strong negative effects four species. Similarly, negatively affected tolerance, depending temperature. Together our results suggest moderately or shorter can lead lower cold adapted regions. Consequently, climate change leading extended mildly these argue this aspect currently overlooked when assessing ability sub‐Artic regions as such predictions typically based estimates assumption beneficial responses. Read free Plain Language Summary article Journal blog.

Language: Английский

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Microhabitat-specific diurnal metabolomic responses of the intertidal limpet Cellana toreuma to winter low temperature

iScience, Journal Year: 2023, Volume and Issue: 26(3), P. 106128 - 106128

Published: Feb. 3, 2023

High-throughput determination of circadian rhythms in metabolic response and their divergent patterns various microhabitats are crucial for understanding how organisms respond to environmental stresses. A mid-intertidal limpet Cellana toreuma was collected at time points across both daytime nighttime winter during low tide investigating the diurnal metabolomic responses cold stress elucidating temperature variations microhabitats. Temperatures emergent rock were lower than tidal pool even aggravated night. series exhibited coordinated changes winter. Metabolic which associated with cellular energy metabolism microhabitat individuals highly induced compared ones. This study shed light on intertidal molluscs field emphasized between

Language: Английский

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Metabolomics as a tool to elucidate biochemical cold adaptation in insects

Current Opinion in Insect Science, Journal Year: 2023, Volume and Issue: 58, P. 101061 - 101061

Published: May 25, 2023

Language: Английский

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The consequences of heatwaves for the reproductive success and physiology of the wingless sub-Antarctic fly Anatalanta aptera

Journal of Thermal Biology, Journal Year: 2024, Volume and Issue: 123, P. 103910 - 103910

Published: July 1, 2024

Sub-lethal effects of warming temperatures are an important, yet sometimes overlooked impact climate change that may threaten the long-term survival numerous species. This, like many other change, is especially concerning for cold-adapted ectotherms living in rapidly polar regions. This study examines warmer on Diptera, using long-lived sub-Antarctic sphaerocerid fly, Anatalanta aptera, as a focal We conducted two experiments to assess heat stress adult flies, one varying intensity (daily heating from 4 °C 8 °C, 20 or 24 °C) and frequency exposure (heating 12 every one, two, three days) examined consequences reproductive success metabolic responses. found more reduced output, but not timing reproduction. Surprisingly, individuals sampled at different times during were undifferentiable when all metabolite concentrations analysed with redundancy analysis, however some individual metabolites did exhibit significant differences. Overall, our findings suggest put this species greater risk, combined concurrent threats biological invasions.

Language: Английский

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How Might Climate Change Affect Adaptive Responses of Polar Arthropods?

Diversity, Journal Year: 2022, Volume and Issue: 15(1), P. 47 - 47

Published: Dec. 30, 2022

Climate change is expected to impact the global distribution and diversity of arthropods, with warmer temperatures forcing species relocate, acclimate, adapt, or go extinct. The Arctic Antarctic regions are extremely sensitive climate have displayed profound variable changes over recent decades, including decreases in sea ice extent, greening tundra, hydrological biogeochemical cycles. It unclear how polar-adapted arthropods will respond such changes, though many be at great risk extinction. Here, we review adaptive mechanisms that allow polar persist extreme environments discuss effects poles likely favour non-native those ability rapidly evolve and/or acclimate. We find physiological, behavioural, plastic, genetic data limited scope for research on responses scarce. This restricts our predict they may a warming climate. call greater investment specifically targets ecology evolution these taxa, genomic transcriptomic approaches can evaluate potential plastic evolved environmental responses.

Language: Английский

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Strong acclimation effect of temperature and humidity on heat tolerance of the Arctic collembolan Megaphorura arctica

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(12)

Published: June 6, 2024

The Arctic is a highly variable environment in which extreme daily and seasonal temperature fluctuations can occur. With climate change, an increase the occurrence of high temperatures drought events expected. While effects cold dehydration stress on polar arthropods are well studied combination, little known about how these species respond to combined heat stress. In this paper, we investigated tolerance collembola Megaphorura arctica affected by combinations different humidity acclimation regimes under controlled laboratory conditions. effect was complex dependent both time temperature, found have positive, negative or no depending experimental Further, marked interaction between tolerance, with lower severely decreasing when increased. This more pronounced increasing time. Lastly, fluctuating regime time, as levels. Together, results show that thermal alone has moderate but events, likely be frequent future, combination large impacts some arthropods.

Language: Английский

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