Journal article
Multigenerational exposure to warming and fishing causes recruitment collapse, but size diversity and periodic cooling can aid recovery
HF Wootton, A Audzijonyte, J Morrongiello
Proceedings of the National Academy of Sciences of the United States of America | Published : 2021
Abstract
Global warming and fisheries harvest are significantly impacting wild fish stocks, yet their interactive influence on population resilience to stress remains unclear. We explored these interactive effects on early-life development and survival by experimentally manipulating the thermal and harvest regimes in 18 zebrafish (Danio rerio) populations over six consecutive generations. Warming advanced development rates across generations, but after three generations, it caused a sudden and large (30-50%) decline in recruitment. This warming impact was most severe in populations where size-selective harvesting reduced the average size of spawners. We then explored whether our observed recruitment ..
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Awarded by Holsworth Wildlife Research Endowment
Funding Acknowledgements
We owe immense gratitude to the University of Melbourne (UoM) undergraduate and graduate student volunteers who dedicated their time to make this experiment possible. Thank you to Ruby Stoios, Caitlin O'Shea, Zhong Wang (Clement) Ng, Thomas Schmitt, Adeline Chew, Alycia Tsiang, Ming Fen (Eileen) Lee, Haseena Bhullar, Lucy Howell, Nick Davies, Noah Jim, Phoebe McIntosh, Sarasvati Santosa, Sarah Willington, Francesca Breidahl, Dionysia Evitaputri, Lily Harrison, GemmaWalker, Katerina Vasilatou, Grace Mui, Chethana Siriwardana, Anna Ischenko, Christian Bell, Jessica Keem, Griffin Heng, Grace Walton-Girle, Shona Elliot-Kerr, Christina Karagiorgis, Ellen Ditria, Laura Town-Hopkinson, Nick Pattinson, Sasha Kumar, Alison Carroll, Andrew Wootton, and Shakira Kumar. We owe thanks to Patricia Jusuf (UoM) and Rodney Glanvil (Monash University) for advice and help on the setup of the experiment. We also thank Silva Uusi-Heikkila (University of Jyvaskyla), Diego Barneche (Australian Institute of Marine Science), Michael Keough (UoM), and Shane Richards (University of Tasmania) for helpful discussions. Finally, we thank two anonymous reviewers who provided valuable comments that greatly improved the manuscript. Funding was provided to H.F.W. by the Australian Postgraduate Award. Research was funded by the Australian Research Council (DP190101627 to J.M. and A.A.), the HolsworthWildlife Research Endowment (H.F.W.), UoM's Faculty of Science Research Grant Support Scheme (J.M.), and Pew Fellows Program in Marine Conservation (A.A.).