期刊
MARINE ECOLOGY PROGRESS SERIES
卷 646, 期 -, 页码 69-78出版社
INTER-RESEARCH
DOI: 10.3354/meps13406
关键词
Intraspecific trait variation; Predator-prey interaction; Ocean acidification; Climate change; Contemporary evolution; Rocky intertidal
资金
- Earl H. and Ethel M. Myers Oceanographic and Marine Biology Trust
- UCSC Ecology and Evolutionary Biology Department
- UCSC Graduate Student Association
- UCSC Hellman Fellows Grant
- National Science Foundation (NSF-DEB) [1457333]
- US Department of Education Graduate Assistance in Areas of National Need program [GAANN P200A150100-17]
- Ecology and Evolutionary Biology Department at UCSC
- UCSC Future Leaders in Coastal Science grant
- Cooperative Institute for Marine Ecosystems and Climate
- David and Lucile Packard Foundation
Local adaptation can cause predator populations to vary in traits and their effects on prey, but few studies have tested whether divergent predator populations respond differently to acute environmental stressors. We tested how Nucella dogwhelks from 3 populations with natural exposure to distinct environmental regimes in the California Current System altered consumption of mussel prey (Mytilus californianus) in ambient (pH 8.0, 429 mu atm partial pressure of CO2 [pCO(2)]) and acidified (pH 7.6, 1032 mu atm pCO(2)) seawater. Overall, experimental acidification increased the variation in consumption time observed among populations. We found reduced consumption time for the population that experienced more frequent exposure to low pH conditions in nature but not for populations with less prior exposure. Exposure to acidification also altered the individual components of consumption time- search time and handling time-depending on source population. These results indicate that impaired predator performance is not a universal response to acidification, that predation responses to acute acidification can be population specific, and that individual population responses may relate to prior exposure. Our study highlights how population-specific responses to climate change can lead to differences in ecological effects that may restructure prey communities at local scales.
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