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Mismatch of thermal optima between performance measures, life stages and species of spiny lobster

Citation

Twiname, S and Fitzgibbon, QP and Hobday, AJ and Carter, CG and Oellermann, M and Pecl, GT, Mismatch of thermal optima between performance measures, life stages and species of spiny lobster, Scientific Reports, 10, (1) Article 21235. ISSN 2045-2322 (2020) [Refereed Article]


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Copyright 2020 the authors. Licensed Under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1038/s41598-020-78052-4

Abstract

In an ocean warming hotspot off south-east Australia, many species have expanded their ranges polewards, including the eastern rock lobster, Sagmariasus verreauxi. This species is likely extending its range via larval advection into Tasmanian coastal waters, which are occupied by the more commercially important southern rock lobster, Jasus edwardsii. Here, thermal tolerances of these lobster species at two life stages were investigated to assess how they may respond to warming ocean temperatures. We found that the pattern, optimum and magnitude of thermal responses differed between performance measures, life stages and species. Sagmariasus verreauxi had a warmer optimal temperature for aerobic scope and escape speed than J. edwardsii. However, J. edwardsii had a higher magnitude of escape speed, indicating higher capacity for escape performance. There were also differences between life stages within species, with the larval stage having higher variation in optimal temperatures between measures than juveniles. This inconsistency in performance optima and magnitude indicates that single performance measures at single life stages are unlikely to accurately predict whole animal performance in terms of life-time survival and fitness. However, combined results of this study suggest that with continued ocean warming, S. verreauxi is likely to continue to extend its distribution polewards and increase in abundance in Tasmania.

Item Details

Item Type:Refereed Article
Keywords:aerobic scope, climate change, crustaceans, escape speed, Jasus edwardsii, range shift, respiratory metabolism, Sagmariasus verreauxi
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fish physiology and genetics
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Aquaculture rock lobster
UTAS Author:Twiname, S (Ms Samantha Twiname)
UTAS Author:Fitzgibbon, QP (Associate Professor Quinn Fitzgibbon)
UTAS Author:Carter, CG (Professor Chris Carter)
UTAS Author:Oellermann, M (Dr Michael Oellermann)
UTAS Author:Pecl, GT (Professor Gretta Pecl)
ID Code:142761
Year Published:2020
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2021-02-11
Last Modified:2021-04-28
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