Metabolic adjustments to winter severity in two geographically separated great tit (Parus major) populations DOI Creative Commons
Cesare Pacioni, Andrey Bushuev, Marina Sentís

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Aug. 3, 2023

Abstract Understanding the potential limits placed on organisms by their ecophysiology is crucial for predicting responses to varying environmental conditions. Studies date have traditionally relied between-species comparisons, however, recently, there has been a growing recognition of importance intraspecific variation in shaping an organism’s ecological and physiological responses. In this context, widely distributed resident bird species offer well-suited study system examine geographical ecophysiological traits. A main hypothesis explaining avian thermoregulatory mechanisms aerobic capacity model, which posits positive correlation between basal (BMR) summit (M sum ) metabolism, caused energetic maintenance costs associated with increased muscle mass shivering thermogenesis enhanced investment digestive organs food processing. Most evidence hypothesis, comes from interspecific comparisons only, underpinnings capacities hence remain controversial. Here, we focus great tits ( Parus major ), measuring winter BMR M two populations different climates, maritime-temperate (Gontrode, Belgium) continental (Zvenigorod, Russia) one. We test presence metabolic rates assess predictions following model. found that differed populations, whereby birds climate (Gontrode) showed higher (whole-body mass-independent) whereas conversely, Zvenigorod levels both . Within each population, our data did not fully support model’s predictions. argue decoupling observed may be selective forces acting these rates, continental-climate population facing need conserve energy surviving long nights (by keeping at low levels) while simultaneously being able generate more heat (i.e., high withstand cold spells. coupling or uncoupling maximum level likely influenced pressures shape local adaptations response regimes.

Language: Английский

Beyond Janzen's Hypothesis: How Amphibians That Climb Tropical Mountains Respond to Climate Variation DOI Creative Commons
Rafael Parelli Bovo, Monique Nouailhetas Simon, Diogo B. Provete

et al.

Integrative Organismal Biology, Journal Year: 2023, Volume and Issue: 5(1)

Published: Jan. 1, 2023

Janzen's hypothesis (JH) posits that low thermal variation selects for narrow physiological tolerances, and thus small species distributional ranges high turnover along tropical elevational gradients. Although this has been intensely revisited, it does not explain how many may exhibit broad distributions, encompassing altitudinal Moreover, the responses of remain largely unknown, limiting our understanding on they respond to climate variation. To fill these knowledge gaps, we tested a major component JH, variability (CVH), which predicts broader tolerance breadth (Tbr = CTmax - CTmin) with temperature Specifically, sampled populations five amphibian distributed in two mountain Brazil's Atlantic Forest test CTmin vary Since both water balance traits are pivotal evolutionary history amphibians, also measured rates dehydration rehydration their relations tolerances. We found increasing altitude did always lead Tbr, since changes were species-specific. In addition, show consistent altitude, correlations between hydric traits. While highland at lower risk stress than lowland counterparts, living far from upper limits. As consequence intraspecific spatial context-dependent heterogeneous. Together recent studies showing tolerances some amphibians comparable temperate taxa, findings highlight several conform predictions made by either CVH or other important hypotheses concerning This reinforces need overcome geographical bias data improve change impacts biodiversity. (Portuguese abstract) Resumo A Hipótese de Janzen postula que baixa variação térmica seleciona tolerâncias fisiológicas estreitas e, portanto, amplitudes restritas distribuição das espécies e alta substituição ao longo gradientes altitudinais tropicais. Embora intensamente revisitada, essa hipótese não explica como tropicais podem exibir amplas distribuições geográficas, abrangendo altitudinais. Além disso, as respostas permanecem amplamente desconhecidas, limitando nossa compreensão sobre elas respondem à climática. Para preencher essas lacunas conhecimento, testamos um componente importante da Variabilidade Climática prevê uma maior amplitude tolerância quando temperatura ambiental é mais ampla. Especificamente, amostramos populações cinco anfíbios distribuídas em duas cadeias montanhosas na Mata Atlântica do Brasil para testar variam altitude. Dado parâmetros térmicos balanço hídrico são fundamentais história evolutiva dos anfíbios, também medimos taxas desidratação reidratação suas relações com térmicas. Encontramos ampla o aumento nem sempre conduz Tbr ampla, vez mudanças foram espécie-específicas. encontramos apresentou consistente mudança correlações entre hídricos baixas. maiores altitudes apresentaram menor risco estresse térmico mesma espécie menores, ambas estão vivendo longe seus limites superiores. Em consequência intraespecífica fisiológicos espacial no clima climática contexto-dependentes heterogêneas. Juntamente estudos recentes indicando térmicas alguns comparáveis táxons temperados, nossas descobertas destacam várias estar acordo previsões feitas pela ou outras hipóteses importantes fisiológica. Isso reforça necessidade superar viés geográfico dados aperfeiçoar impactos climáticas biodiversidade. (Spanish Resumen La hipótesis la baja variación selecciona tolerancias estrechas y, por lo tanto, rangos distribución especies restringidos con rotación largo elevación tropicales. Aunque esta ha sido discutida, cómo tropicales pueden exhibir distribuciones amplias, abarcando altitudinales. Además, las respuestas siguen siendo bastante desconocidas, limita comprensión responden llenar estos vacíos conocimiento, examinamos un Hipótesis Variabilidad predice mayor amplitud tolerancia cuando es más amplia. Específicamente, tomamos muestras poblaciones anfibios distribuidas en cadenas montañosas el Bosque Atlántico verificar y varían este gradiente elevación. los rasgos equilibrio son fundamentales historia anfibios, también tasas deshidratación rehidratación sus relaciones una amplia altitud siempre conduce amplia, ya cambios específicos especie. muestra altitud, bajas correlaciones térmicos. Si bien tierras altas tienen riesgo estrés contrapartes bajas, se encuentran lejos límites Como consecuencia fueron dependientes del contexto heterogéneas. Junto estudios recientes muestran algunos comparables taxones zonas templadas, nuestros hallazgos resaltan varias ajustarse predicciones hechas u otras Esto refuerza necesidad sesgo datos mejorar cambio climático biodiversidad.

Citations

12
Latitudinal variation in thermal performance of the common coral, Pocillopora spp DOI Creative Commons
Peter J. Edmunds, David J. Combosch, Héctor Torrado

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(11)

Published: May 3, 2024

Understanding how tropical corals respond to temperatures is important evaluating their capacity persist in a warmer future. We studied the common Pacific coral Pocillopora over 44° of latitude, and used populations at three islands with different thermal regimes compare responses temperature using performance curves (TPCs) for respiration gross photosynthesis. Corals were sampled local autumn from Moorea, Guam Okinawa, where mean±s.d. annual seawater 28.0±0.9°C, 28.9±0.7°C 25.1±3.4°C, respectively. TPCs similar among latitudes, optimum (Topt) was above maximum all islands, lowest Okinawa. photosynthesis wider, implying greater eurytopy, higher Topt Moorea versus but daily 13% year Okinawa 53% Guam. There variation than or which translated large supply metabolic energy photosynthetically fixed carbon latitudes. Despite these trends, differences spp. not profoundly across reducing likelihood that could better match phenotypes future more extreme through migration. Any such response would place premium on high plasticity tolerance seasonal variations budgets.

Language: Английский

Citations

3
Temperature influences desiccation resistance of bumble bees DOI
Jamieson C. Botsch, Jesse D. Daniels, Jelena Bujan

et al.

Journal of Insect Physiology, Journal Year: 2024, Volume and Issue: 155, P. 104647 - 104647

Published: May 6, 2024

Language: Английский

Citations

3
Metabolic adjustments to winter severity in two geographically separated great tit (Parus major) populations DOI
Cesare Pacioni, Andrey Bushuev, Marina Sentís

et al.

Journal of Experimental Zoology Part A Ecological and Integrative Physiology, Journal Year: 2024, Volume and Issue: 341(4), P. 410 - 420

Published: Feb. 18, 2024

Understanding the potential limits placed on organisms by their ecophysiology is crucial for predicting responses to varying environmental conditions. A main hypothesis explaining avian thermoregulatory mechanisms aerobic capacity model, which posits a positive correlation between basal (basal metabolic rate [BMR]) and summit (M

Language: Английский

Citations

2
Global thermal tolerance of freshwater invertebrates and fish DOI
Helena S. Bayat, Fengzhi He, Graciela Medina Madariaga

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 11, 2024

Abstract Scientists have investigated the thermal tolerance of organisms for centuries, yet field has not lost relevance as environmental threats pollution and global change sharpen need to understand vulnerability in landscapes increasingly subjected multiple stressors. Freshwater fish especially invertebrates are greatly underrepresented recent large-scale compilations tolerance, despite importance freshwater habitats a crucial resource biodiversity havens. This inspired us create database these that includes literature from 1900 until present day sourced five languages counteract geographic bias, 395 tests conducted with additional stressors present. The contains over 5000 records 800 species, including 452 invertebrates, providing valuable test hypotheses on risks future environments, how might stressor scenarios.

Language: Английский

Citations

2
Physiologically informed organismal climatologies reveal unexpected spatiotemporal trends in temperature DOI Creative Commons
Aubrey Foulk, Tarik C. Gouhier, Francis Choi

et al.

Conservation Physiology, Journal Year: 2024, Volume and Issue: 12(1)

Published: Jan. 1, 2024

Body temperature is universally recognized as a dominant driver of biological performance. Although the critical distinction between an organism and its surrounding habitat has long been recognized, it remains common practice to assume that trends in air temperature-collected via remote sensing or weather stations-are diagnostic animal thus spatiotemporal patterns physiological stress mortality risk. Here, by analysing long-term recorded biomimetic sensors designed emulate intertidal mussel across US Pacific Coast, we show maximal organismal ('organismal climatologies') during aerial exposure can differ substantially from those exhibited co-located environmental data products. Specifically, using linear regression compare (air temperature) climatologies, not only are magnitudes body markedly different, expected, but so their temporal at both local biogeographic scales, with some sites showing significant decadal-scale increases despite reductions temperature, vice versa. The idiosyncratic relationship temperatures suggests climatology cannot be statistically corrected serve accurate proxy for climatology. Finally, quantile regression, vary distribution extremes shifting different directions rates than average metrics. Overall, our results highlight importance quantifying changes entire better predict performance dispel notion raw 'corrected' (and specially climatologies used trends. Hence, widespread coverage availability, severe limitations suggest role conservation management policy should carefully considered.

Language: Английский

Citations

1
Spawning is accompanied by increased thermal performance in blue mussels DOI Creative Commons
Katharina Alter, María Constenla, Francesc Padrós

et al.

Journal of Thermal Biology, Journal Year: 2024, Volume and Issue: 127, P. 104018 - 104018

Published: Nov. 28, 2024

Language: Английский

Citations

1
Development of an LCA characterization factor to account UHI local effect on terrestrial ecosystems damage category: Evaluation of European Bombus and Onthophagus genera heat-stress mortality DOI
Chiara Chessa, Tiziana Susca

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 897, P. 165183 - 165183

Published: June 27, 2023

Language: Английский

Citations

3
Metabolic adjustments to winter severity in two geographically separated great tit (Parus major) populations DOI Creative Commons
Cesare Pacioni, Andrey Bushuev, Marina Sentís

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Aug. 3, 2023

Abstract Understanding the potential limits placed on organisms by their ecophysiology is crucial for predicting responses to varying environmental conditions. Studies date have traditionally relied between-species comparisons, however, recently, there has been a growing recognition of importance intraspecific variation in shaping an organism’s ecological and physiological responses. In this context, widely distributed resident bird species offer well-suited study system examine geographical ecophysiological traits. A main hypothesis explaining avian thermoregulatory mechanisms aerobic capacity model, which posits positive correlation between basal (BMR) summit (M sum ) metabolism, caused energetic maintenance costs associated with increased muscle mass shivering thermogenesis enhanced investment digestive organs food processing. Most evidence hypothesis, comes from interspecific comparisons only, underpinnings capacities hence remain controversial. Here, we focus great tits ( Parus major ), measuring winter BMR M two populations different climates, maritime-temperate (Gontrode, Belgium) continental (Zvenigorod, Russia) one. We test presence metabolic rates assess predictions following model. found that differed populations, whereby birds climate (Gontrode) showed higher (whole-body mass-independent) whereas conversely, Zvenigorod levels both . Within each population, our data did not fully support model’s predictions. argue decoupling observed may be selective forces acting these rates, continental-climate population facing need conserve energy surviving long nights (by keeping at low levels) while simultaneously being able generate more heat (i.e., high withstand cold spells. coupling or uncoupling maximum level likely influenced pressures shape local adaptations response regimes.

Language: Английский

Citations

0