Can acclimation of thermal tolerance, in adults and across generations, act as a buffer against climate change in tropical marine ectotherms?

Morley, S.A. ORCID: https://orcid.org/0000-0002-7761-660X; Nguyen, K.D.; Peck, L.S. ORCID: https://orcid.org/0000-0003-3479-6791; Lai, C.H.; Tan, K.S.. 2017 Can acclimation of thermal tolerance, in adults and across generations, act as a buffer against climate change in tropical marine ectotherms? Journal of Thermal Biology, 68B. 195-199. https://doi.org/10.1016/j.jtherbio.2016.09.007

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Abstract/Summary

Thermal acclimation capacity was investigated in adults of three tropical marine invertebrates, the subtidal barnacle Striatobalanus amaryllis, the intertidal gastropod Volegalea cochlidium and the intertidal barnacle Amphibalanus amphitrite. To test the relative importance of transgenerational acclimation, the developmental acclimation capacity of A. amphitrite was investigated in F1 and F2 generations reared at a subset of the same incubation temperatures. The increase in CTmax (measured through loss of key behavioural metrics) of F0 adults across the incubation temperature range 25.4–33.4 °C was low: 0.00 °C (V. cochlidium), 0.05 °C (S. amaryllis) and 0.06 °C (A. amphitrite) per 1 °C increase in incubation temperature (the acclimation response ratio; ARR). Although the effect of generation was not significant, across the incubation temperature range of 29.4–33.4 °C, the increase in CTmax in the F1 (0.30 °C) and F2 (0.15 °C) generations of A. amphitrite was greater than in the F0 (0.10 °C). These correspond to ARR's of 0.03 °C (F0), 0.08 °C (F1) and 0.04 °C (F2), respectively. The variability in CTmax between individuals in each treatment was maintained across generations, despite the high mortality of progeny. Further research is required to investigate the potential for transgenerational acclimation to provide an extra buffer for tropical marine species facing climate warming.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.jtherbio.2016.09.007
Programmes:	BAS Programmes > BAS Programmes 2015 > Biodiversity, Evolution and Adaptation
ISSN:	03064565
Additional Keywords:	acclimation, transgenerational acclimation, CTmax, tropical marine invertebrate, warming tolerance, climate change
Date made live:	30 Jan 2017 09:01 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/512718

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