Multi-generational responses of a marine polychaete to a rapid change in seawater pCO(2)

Rodríguez-Romero, Araceli, Jarrold, Michael D., Massamba-N'Siala, Gloria, Spicer, John I., and Calosi, Piero (2016) Multi-generational responses of a marine polychaete to a rapid change in seawater pCO(2). Evolutionary Applications, 9 (9). pp. 1082-1095.

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Little is known of the capacity that marine metazoans have to evolve under rapid pCO(2) changes. Consequently, we reared a marine polychaete, Ophryotrocha labronica, previously cultured for approximately 33 generations under a low/variable pH regime, under elevated and low pCO(2) for six generations. The strain used was found to be tolerant to elevated pCO(2) conditions. In generations F1 and F2 females' fecundity was significantly lower in the low pCO(2) treatment. However, from generation F3 onwards there were no differences between pCO(2) treatments, indicating that trans-generational effects enabled the restoration and maintenance of reproductive output. Whilst the initial fitness recovery was likely driven by trans-generational plasticity (TGP), the results from reciprocal transplant assays, performed using F7 individuals, made it difficult to disentangle between whether TGP had persisted across multiple generations, or if evolutionary adaptation had occurred. Nonetheless, both are important mechanisms for persistence under climate change. Overall, our study highlights the importance of multi-generational experiments in more accurately determining marine metazoans' responses to changes in pCO(2), and strengthens the case for exploring their use in conservation, by creating specific pCO(2) tolerant strains of keystone ecosystem species.

Item ID: 47224
Item Type: Article (Research - C1)
ISSN: 1752-4571
Keywords: adaptive potential, climate change, evolutionary adaptation, fecundity, multi-generational experiment, ocean acidification, parental effects, trans-generational plasticity
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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Funders: Natural Environment Research Council (NERC), UK, Spanish Regional Government (SRG), National Sciences and Engineering Research Council (NSERC), European Union (EU) Marie Curie-Slodowska Research Fellowship
Projects and Grants: NERC-Defra-DEC UKOA Research program grant NE/H017127/1, SRG grant RNM-3924, NSERC Discovery Program grant, EU EVOLMARIN-GA 659359
Research Data:
Date Deposited: 04 Jan 2017 08:02
FoR Codes: 41 ENVIRONMENTAL SCIENCES > 4102 Ecological applications > 410299 Ecological applications not elsewhere classified @ 60%
31 BIOLOGICAL SCIENCES > 3109 Zoology > 310911 Animal structure and function @ 40%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments @ 100%
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