Boldness in a deep sea hermit crab to simulated tactile predator attacks is unaffected by ocean acidification
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Despite rapidly growing interest in the effects of ocean acidification on marine animals, the ability of deep-sea animals to acclimate or adapt to reduced pH conditions has received little attention. Deep-sea species are generally thought to be less tolerant of environmental variation than shallow-living species because they inhabit relatively stable conditions for nearly all environmental parameters. To explore whether deep-sea hermit crabs (Pagurus tanneri) can acclimate to ocean acidification over several weeks, we compared behavioral “boldness,” measured as time taken to re-emerge from shells after a simulated predatory attack by a toy octopus, under ambient (pH ∼7.6) and expected future (pH ∼7.1) conditions. The boldness measure for crab behavioral responses did not differ between different pH treatments, suggesting that future deep-sea acidification would not influence anti-predatory behavior. However, we did not examine the effects of olfactory cues released by predators that may affect hermit crab behavior and could be influenced by changes in the ocean carbonate system driven by increasing CO2 levels.
Key wordsdeep sea behavior boldness carbon dioxide hermit crab ocean acidification
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- Dodd LF, Grabowski JH, Piehler MF, Westfield I, Ries JB (2015) Ocean acidification impairs crab foraging behaviour. P Roy Soc B-Biol Sci 282(1810). doi: 10.1098/rspb.2015.0333
- Gattuso J-P, Brewer PG, Hoegh-Guldberg O, Kleypas JA, Pörtner H-O, Schmidt DN (2014) Cross-chapter box on ocean acidification. In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp 129–131Google Scholar
- Pierrot D, Lewis E, Wallace DWR (2006) CO2sys dos Program Developed for CO2 System Calculations. Ornl/cdiac-105. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U. S. Department of Energy, Oak RidgeGoogle Scholar