Oviposited eggs are sensitive to experimental heatwaves

Oviposited eggs are sensitive to experimental heatwaves | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Oikos This is a preprint and has not been peer reviewed. Data may be preliminary. 6 June 2025 V1 Latest version Share on Oviposited eggs are sensitive to experimental heatwaves Authors : Ramakrishnan Vasudeva 0000-0002-3831-0384 [email protected] , Benjamin Cole , Michael Pointer , and Matthew Gage Authors Info & Affiliations https://doi.org/10.22541/au.174920046.63512851/v1 Published Oikos Version of record Peer review timeline 295 views 152 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Extreme, variable heatwaves are predicted to increase in frequency under global warming, leading to thermal stress that can be damaging to biodiversity. Recently, it has been shown that exposure to heatwaves is detrimental for adult reproduction, reducing population viability. However, relatively little is known about how oviposited insect eggs, one of the early stages post-fertilisation, are affected by heatwaves. Here, we explore the impact of short- and longer-term thermal stress from experimental heatwaves in an economically important insect model, the red flour beetle (Tribolium castaneum). We uncovered that even short-term exposures (of 2 and 5 hours) (30°C, 40°C, 42°C, 44°C, 46°C, 48°C and 50°C) resulted in a drastic decline in the survival of oviposited eggs, a trend that was also observed when eggs experienced longer durations (1, 3 and 5 days at 42°C). Experiments were run independently across two labs, with results found to be reproducible, reinforcing confidence in our findings. Collectively, our results suggest that oviposited eggs (early embryos) may be particularly vulnerable to heatwaves, even when the exposures are brief. Supplementary Material File (oik-11742-file001.docx) Download 961.52 KB Information & Authors Information Version history V1 Version 1 06 June 2025 Peer review timeline Published Oikos Version of Record 3 Nov 2025 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Collection Oikos Keywords beetles ecology heatwaves reproduction Authors Affiliations Ramakrishnan Vasudeva 0000-0002-3831-0384 [email protected] University of Exeter - Penryn Campus View all articles by this author Benjamin Cole University of East Anglia View all articles by this author Michael Pointer University of East Anglia View all articles by this author Matthew Gage University of East Anglia View all articles by this author Metrics & Citations Metrics Article Usage 295 views 152 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Ramakrishnan Vasudeva, Benjamin Cole, Michael Pointer, et al. Oviposited eggs are sensitive to experimental heatwaves. Authorea . 06 June 2025. DOI: https://doi.org/10.22541/au.174920046.63512851/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . Format Please select one from the list RIS (ProCite, Reference Manager) EndNote BibTex Medlars RefWorks Direct import Tips for downloading citations document.getElementById('citMgrHelpLink').addEventListener('click', function() { popupHelp(this.href); return false; }); $(".js__slcInclude").on("change", function(e){ if ($(this).val() == 'refworks') $('#direct').prop("checked", false); $('#direct').prop("disabled", ($(this).val() == 'refworks')); }); View Options View options PDF View PDF Figures Tables Media Share Share Share article link Copy Link Copied! Copying failed. 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