The effect of water temperature on drilling and ingestion rates of the dogwhelk Nucella lapillus feeding on Mytilus edulis mussels in the laboratory
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In highly seasonal intertidal habitats, changes in temperature through the year may drive substantial shifts in feeding and growth rates of organisms. For the dogwhelk Nucella lapillus, attacking and consuming Mytilus edulis mussels can take hours or days, depending on temperature. Handling time of dogwhelks feeding on mussels is therefore greatly affected by ocean temperature. I recorded attack time in the laboratory, partitioned into drilling and consumption time, for juvenile dogwhelks across a range of seawater temperatures representative of field seawater temperatures during the main growing seasons of summer and autumn. The combined length of a drilling attack and subsequent ingestion time tripled across the 10 °C decline in water temperatures from July through November, driven primarily by an increase in ingestion time. The observed reduction in handling time, coupled with projected sea surface warming in New England by the end of the twenty-first century, could extend the length of the growing season for Nucella and subsequently have cascading effects on the prey community.
KeywordsDrill Hole Hydrophone Seawater Temperature Ingestion Time Mussel Shell
The author was supported by a National Science Foundation grant OCE-0727628 to G. C. Trussell. C. M. Matassa collected the whelks and mussels, M. E. Bracken provided space for the monitoring equipment. C. A. Blanchette provided the original motivation for the project, and M. Jelenic provided thoughtful discussion on monitoring feeding behavior.
- Audacity Development Team (2010) Audacity 1.3beta. http://audacity.sourceforge.net/
- Carriker MR (1981) Shell penetration and feeding by naticacean and muricacean predatory gastropods: a synthesis. Malacologia 20:403–422Google Scholar
- Fox J, Weisberg S (2011) An R companion to applied regression, 2nd edn. SAGE Publications, Thousand OaksGoogle Scholar
- Hughes RN, Drewett D (1985) A comparison of the foraging behavior of dogwhelks, Nucella lapillus (L.), feeding on barnacles or mussels on the shore. J Molluscan Stud 51(1):73–77Google Scholar
- IPCC (2007) Climate change 2007: the physical science basis. Contribution of working group I to the fourth assessment report of the intergovernmental panel on climate change. In: Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tignor M, Miller HL (eds) Cambridge University Press, CambridgeGoogle Scholar
- IPCC Working Group III (2000) IPCC Special report emissions scenarios. summary for policymakers. intergovernmental panel on climate change. 20 pgsGoogle Scholar
- Jones SJ, Mieszkowska N, Wethey DS (2009) Linking thermal tolerances and biogeography: Mytilus edulis (L.) at its southern limit on the east coast of the United States. Biol Bull 217(1):73Google Scholar
- R Development Core Team (2012) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria http://www.R-project.org/
- Rasband WS (1997-2013) ImageJ. US National Institutes of Health, Bethesda, Maryland http://rsb.info.nih.gov/ij/
- Welch WR (1968) Changes in abundance of the green crab, Carcinus maenas (L.), in relation to recent temperature changes. Fish Bull 67(2):337–345Google Scholar