Systematic approaches to assessing high-temperature limits to fertility in animals.

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Bretman, Amanda ORCID: 0000-0002-4421-3337, Fricke, Claudia ORCID: 0000-0002-0691-6779, Baur, Julian ORCID: 0000-0002-4739-2756, Berger, David ORCID: 0000-0003-0196-6109, Breedveld, Merel C ORCID: 0000-0002-3198-7683, Dierick, Diego ORCID: 0000-0002-4854-3819, Canal Domenech, Berta ORCID: 0000-0003-1447-5704, Drobniak, Szymon M ORCID: 0000-0001-8101-6247, Ellers, Jacintha ORCID: 0000-0003-2665-1971, English, Sinead ORCID: 0000-0003-2898-2301 et al (show 16 more authors) , Gasparini, Clelia ORCID: 0000-0001-9172-1142, Iossa, Graziella ORCID: 0000-0001-6813-4361, Lagisz, Malgorzata ORCID: 0000-0002-3993-6127, Nakagawa, Shinichi ORCID: 0000-0002-7765-5182, Noble, Daniel WA ORCID: 0000-0001-9460-8743, Pottier, Patrice ORCID: 0000-0003-2106-6597, Ramm, Steven A ORCID: 0000-0001-7786-7364, Rowe, Melissah ORCID: 0000-0001-9747-041X, Schultner, Eva ORCID: 0000-0002-5069-9732, Schou, Mads ORCID: 0000-0001-5521-5269, Simões, Pedro ORCID: 0000-0002-4253-1200, Stockley, Paula ORCID: 0000-0003-1593-5848, Vasudeva, Ramakrishnan ORCID: 0000-0002-3831-0384, Weaving, Hester ORCID: 0000-0002-9093-0556, Price, Tom AR ORCID: 0000-0002-4394-6301 and Snook, Rhonda R ORCID: 0000-0003-1852-1448 (2024) Systematic approaches to assessing high-temperature limits to fertility in animals. Journal of evolutionary biology, 37 (4). pp. 471-485.

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Abstract

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 the consequences of climate change. However, unlike CTLs, TFL data are limited to Drosophila, and variability in TSF methods poses challenges in predicting species responses to increasing temperature. To address these data and methodological gaps, we propose 3 standardized 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, focussing on the effects of short-term heat shocks and 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 standardized TSF protocol. Finally, we provide a framework to quantify fertility loss in response to extreme heat events in nature, given the limitations in laboratory approaches. Applying these standardized approaches across many taxa, similar to CTLs, will allow robust tests of the impact of fertility loss on species responses to increasing temperatures.

Item Type:	Article
Uncontrolled Keywords:	Animals, Invertebrates, Drosophila, Temperature, Fertility, Climate Change
Divisions:	Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Infection, Veterinary and Ecological Sciences
Depositing User:	Symplectic Admin
Date Deposited:	30 Jan 2024 08:11
Last Modified:	26 Apr 2024 18:40
DOI:	10.1093/jeb/voae021
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3178058