A systematic map of studies testing the relationship between temperature and animal reproduction

Ecological Solutions and Evidence, Journal Year: 2024, Volume and Issue: 5(1)

Published: Jan. 1, 2024

Abstract Exposure to extreme temperatures can negatively affect animal reproduction, by disrupting the ability of individuals produce any offspring (fertility), or number produced fertile (fecundity). This has important ecological consequences, because reproduction is ultimate measure population fitness: a reduction in reproductive output lowers growth rate and increases extinction risk. Despite this importance, there have been no large‐scale summaries evidence for effect temperature on reproduction. We provide systematic map studies testing relationship between systematically searched published that statistically test direct link terms fertility, fecundity indirect measures potential (gamete gonad traits). Overall, we collated large rich base, with 1654 papers met our inclusion criteria, encompassing 1191 species. The revealed several research gaps. Insects made up almost half dataset, but reptiles amphibians were uncommon, as non‐arthropod invertebrates. Fecundity was most common trait examined, relatively few measured fertility. It uncommon experimental exposure different life stages, short‐term heat cold shock, fluctuations, independently assess male female effects. Studies often journals focusing entomology pest control, ecology evolution, aquaculture fisheries science, marine biology. Finally, while sampled from every continent, strong sampling bias towards mid‐latitudes Northern Hemisphere, such tropics polar regions are less well sampled. reveals literature also uncovers substantial missing treatment taxa, traits, thermal regimes. database will valuable resource future quantitative meta‐analyses, aiming fill identified

Language: Английский

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The impact of rising temperatures on the prevalence of coral diseases and its predictability: A global meta‐analysis

Ecology Letters, Journal Year: 2023, Volume and Issue: 26(8), P. 1466 - 1481

Published: June 6, 2023

Abstract Coral reefs are under threat from disease as climate change alters environmental conditions. Rising temperatures exacerbate coral disease, but this relationship is likely complex other factors also influence prevalence. To better understand relationship, we meta‐analytically examined 108 studies for changes in global over time alongside temperature, expressed using average summer sea surface temperature (SST) and cumulative heat stress weekly anomalies (WSSTAs). We found that both rising SST WSSTA were associated with increases the mean variability Global prevalence tripled, reaching 9.92% 25 years examined, effect of ‘year’ became more stable (i.e. has lower variance time), contrasting effects two stressors. Regional patterns diverged differed response to SST. Our model predicted that, same trajectory, 76.8% corals would be diseased globally by 2100, even assuming moderate WSSTA. These results highlight need urgent action mitigate disease. Mitigating impact ocean on a challenge requiring discussion further study.

Language: Английский

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Chemical Mixtures and Multiple Stressors: Same but Different?

Environmental Toxicology and Chemistry, Journal Year: 2023, Volume and Issue: 42(9), P. 1915 - 1936

Published: April 10, 2023

Ecosystems are strongly influenced by multiple anthropogenic stressors, including a wide range of chemicals and their mixtures. Studies on the effects stressors have largely focussed nonchemical whereas studies chemical mixtures ignored other stressors. However, both research areas face similar challenges require tools methods to predict joint or frameworks integrate missing. We provide an overview paradigms, tools, commonly used in stressor mixture discuss potential domains cross-fertilization challenges. First, we compare general paradigms ecotoxicology (applied) ecology explain historical divide. Subsequently, approaches for identification interactions, characterization, designing experiments. suggest that too focused interactions would benefit from integration regarding null model selection. Stressor characterization is typically more costly While comprehensive classification systems at suborganismal level been developed, recent account environmental context. Both suffer rather simplified experimental designs focus only limited number chemicals, treatments. concepts can guide realistic capturing spatiotemporal dynamics. process-based data-driven models particularly promising tackle challenge prediction (meta-)communities (meta-)food webs. propose framework assessment Environ Toxicol Chem 2023;42:1915-1936. © 2023 The Authors. Environmental Toxicology Chemistry published Wiley Periodicals LLC behalf SETAC.

Language: Английский

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A comprehensive database of amphibian heat tolerance

Scientific Data, Journal Year: 2022, Volume and Issue: 9(1)

Published: Oct. 4, 2022

Abstract Rising temperatures represent a significant threat to the survival of ectothermic animals. As such, upper thermal limits an important trait assess vulnerability ectotherms changing temperatures. For instance, one may use estimate current and future safety margins (i.e., proximity experienced temperatures), this together with other physiological traits in species distribution models, or investigate plasticity evolvability these for buffering impacts While datasets on tolerance have been previously compiled, they sometimes report single estimates given species, do not present measures data dispersion, are biased towards certain parts globe. To overcome limitations, we systematically searched literature seven languages produce most comprehensive dataset date amphibian limits, spanning 3,095 across 616 species. This resource will useful tool evaluate amphibians, more generally,

Language: Английский

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Heat stress and amphibian immunity in a time of climate change

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 378(1882)

Published: June 12, 2023

As a class of vertebrates, amphibians, are at greater risk for declines or extinctions than any other vertebrate group, including birds and mammals. There many threats, habitat destruction, invasive species, overuse by humans, toxic chemicals emerging diseases. Climate change which brings unpredictable temperature changes rainfall constitutes an additional threat. Survival amphibians depends on immune defences functioning well under these combined threats. Here, we review the current state knowledge how respond to some natural stressors, heat desiccation stress, limited studies stressful conditions. In general, suggest that stress can activate hypothalamus pituitary–interrenal axis, with possible suppression innate lymphocyte-mediated responses. Elevated temperatures alter microbial communities in amphibian skin gut, resulting dysbiosis fosters reduced resistance pathogens. This article is part theme issue ‘Amphibian immunity: disease ecoimmunology’.

Language: Английский

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Developmental environment has lasting effects on amphibian post-metamorphic behavior and thermal physiology

Journal of Experimental Biology, Journal Year: 2023, Volume and Issue: 226(9)

Published: April 11, 2023

ABSTRACT Environmental challenges early in development can result complex phenotypic trade-offs and long-term effects on individual physiology, performance behavior, with implications for disease predation risk. We examined the of simulated pond drying elevated water temperatures development, growth, thermal physiology behavior a North American amphibian, Rana sphenocephala. Tadpoles were raised outdoor mesocosms under warming regimes based projected climatic conditions 2070. predicted that amphibians experiencing rapid associated climate change would accelerate be smaller at metamorphosis demonstrate differences exploratory post-metamorphosis. Although both accelerated reduced survival to metamorphosis, only resulted animals metamorphosis. Around 1 month post-metamorphosis, from control treatment jumped relatively farther high jumping trials. In addition, across all treatments, frogs shorter larval periods had lower critical minima maxima. also found developing less behavioral phenotype, higher selected gradient. Furthermore, preference, selecting temperatures. Our results underscore multi-faceted developmental environments physiological phenotypes later life. Thermal preference influence risk through thermoregulation, may increase or pathogen encounter. Thus, stressors during mediate amphibian exposure susceptibility predators pathogens into life stages.

Language: Английский

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Developmental Plasticity in Anurans: Meta-analysis Reveals Effects of Larval Environments on Size at Metamorphosis And Timing of Metamorphosis

Integrative and Comparative Biology, Journal Year: 2023, Volume and Issue: 63(3), P. 714 - 729

Published: June 5, 2023

Synopsis Many anuran amphibians (frogs and toads) rely on aquatic habitats during their larval stage. The quality of this environment can significantly impact lifetime fitness population dynamics. Over 450 studies have been published environmental impacts developmental plasticity, yet we lack a synthesis these effects across different environments. We conducted meta-analysis used comparative approach to understand whether plasticity in response environments produces predictable changes metamorphic phenotypes. analyzed data from 124 spanning 80 species six showed that intraspecific variation mass at metamorphosis the duration period is partly explained by type experienced period. Changes tended reduce relative control conditions, with degree change depending identity severity change. Higher temperatures lower water levels shortened period, whereas less food higher densities increased Phylogenetic relationships among were not associated interspecific or plasticity. Our results provide foundation for future especially global changes. This study provides motivation additional work links consequences within life stages, as well how outcomes described here are altered compounding

Language: Английский

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Vulnerability of amphibians to global warming

Published: Jan. 11, 2024

Amphibians are the most threatened vertebrates, yet their resilience to rising temperatures remains poorly understood. This is primarily because knowledge of thermal tolerance taxonomically and geographically biased, compromising global climate vulnerability assessments. Here, we employed a novel data imputation approach predict heat 60% amphibian species assessed daily temperature variation in refugia. We found 198 out 5203 currently exposed overheating events shaded terrestrial conditions. Despite accounting for plasticity, 4°C increase would create step-change impact severity, pushing 9.4% beyond physiological limits. In Southern Hemisphere, tropical encounter disproportionally more events, while Northern non-tropical susceptible. Our findings challenge evidence latitudinal gradients risk underscore importance considering climatic variability Notably, our conservative estimates assume access microenvironments, implying that warming’s impacts on amphibians may exceed projections. microclimate-explicit analyses also demonstrate how availability vegetation water bodies critical buffering during waves. Immediate action needed preserve manage these microhabitat features.

Language: Английский

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Effect of different temperature variations on the physiological state of catfish species: a systematic review

Fish Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 50(2), P. 413 - 434

Published: Feb. 17, 2024

Language: Английский

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Vulnerability of amphibians to global warming

Nature, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Amphibians are the most threatened vertebrates, yet their resilience to rising temperatures remains poorly understood1,2. This is primarily because knowledge of thermal tolerance taxonomically and geographically biased3, compromising global climate vulnerability assessments. Here we used a phylogenetically informed data-imputation approach predict heat 60% amphibian species assessed daily temperature variations in refugia. We found that 104 out 5,203 (2%) currently exposed overheating events shaded terrestrial conditions. Despite accounting for heat-tolerance plasticity, 4 °C increase would create step change impact severity, pushing 7.5% beyond physiological limits. In Southern Hemisphere, tropical encounter disproportionally more events, while non-tropical susceptible Northern Hemisphere. These findings challenge evidence general latitudinal gradient risk4-6 underscore importance considering climatic variability provide conservative estimates assuming access cool microenvironments. Thus, impacts warming will probably exceed our projections. Our microclimate-explicit analyses demonstrate vegetation water bodies critical buffering amphibians during waves. Immediate action needed preserve manage these microhabitat features.

Language: Английский

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