Systematic approaches to assessing high temperature limits to fertility in animals
2024
Bretman, Amanda | Fricke, Claudia | Baur, Julian | Berger, David | Breedveld, Merel C. | Dierick, Diego | Canal Domenech, Berta | Drobniak, Szymon, M | Ellers, Jacintha | English, Sinead | Gasparini, Clelia | Iossa, Graziella | Lagisz, Malgorzata | Nakagawa, Shinichi | Noble, Daniel W.A. | Pottier, Patrice | Ramm, Steven, A | Rowe, Melissah | Schultner, Eva | Schou, Mads | Simões, Pedro | Stockley, Paula | Vasudeva, Ramakrishnan | Weaving, Hester | Price, Tom A. R. | Snook, Rhonda, R | University of Leeds | Martin-Luther-Universität Halle Wittenberg - Martin-Luther-University Halle Wittenberg (MLU) | Uppsala Universitet [Uppsala] | Università degli Studi di Padova = University of Padua (Unipd) | Westfälische Wilhelms-Universität Münster = University of Münster (WWU) | Uniwersytet Jagielloński w Krakowie = Jagiellonian University = Université Jagellon de Cracovie (UJ) | University of New South Wales [Sydney] (UNSW) | Vrije Universiteit Amsterdam [Amsterdam] (VU) | University of Bristol [Bristol] | University of Lincoln [UK] | Australian National University (ANU) | Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO) ; Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) ; Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des sciences de l'environnement de Rennes (OSERen) ; Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Netherlands Institute of Ecology (NIOO-KNAW) | Universität Regensburg - University of Regensburg (UR) | Aarhus University [Aarhus] | Universidade de Lisboa = University of Lisbon = Université de Lisbonne (ULISBOA) | University of Liverpool | Stockholm University
International audience
显示更多 [+] 显示较少 [-]英语. Critical Thermal Limits (CTLs) gauge the physiological impact of temperature on survival or critical biological function, aiding predictions of species range shifts and climatic resilience. Two recent Drosophila species studies, using similar approaches to determine temperatures that induce sterility (Thermal Fertility Limits; TFLs), reveal that TFLs are often lower than CTLs, and that TFLs better predict both current species distributions and extinction probability. Moreover, many studies show fertility is more sensitive at less extreme temperatures than survival (Thermal Sensitivity of Fertility: TSF). These results present a more pessimistic outlook on climate change consequences. However, unlike CTLs, TFL data are limited to Drosophila, and variability in TSF methods pose challenges in predicting species responses to increasing temperature. To address these data and methodological gaps, we propose three standardised approaches for assessing thermal impacts on fertility. We focus on adult obligate sexual terrestrial invertebrates, but also provide modifications for other animal groups and life history stages. We first outline a “gold-standard” protocol for determining TFLs, focusing on the effects of short-term heat shocks, simulating more frequent extreme heat events predicted by climate models. As this approach may be difficult to apply to some organisms, we then provide a standardised TSF protocol. Finally, we provide a framework to quantify fertility loss in response to extreme heat events in nature, given limitation in laboratory approaches. Applying these standardised approaches across many taxa, similar to CTLs, will allow robust tests of the impact of fertility loss on species responses to increasing temperatures.
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