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Effect of grazing-mediated dimethyl sulfide (DMS) production on the swimming behavior of the copepod calanus helgolandicus

Breckels, MN and Bode, NWF and Codling, EA and Steinke, M (2013) 'Effect of grazing-mediated dimethyl sulfide (DMS) production on the swimming behavior of the copepod calanus helgolandicus.' Marine Drugs, 11 (7). 2486 - 2500. ISSN 1660-3397

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Chemical interactions play a fundamental role in the ecology of marine foodwebs. Dimethyl sulfide (DMS) is a ubiquitous marine trace gas that acts as a bioactive compound by eliciting foraging behavior in a range of marine taxa including the copepod Temora longicornis. Production of DMS can rapidly increase following microzooplankton grazing on phytoplankton. Here, we investigated whether grazing-induced DMS elicits an increase in foraging behavior in the copepod Calanus helgolandicus. We developed a semi-Automated method to quantify the effect of grazing-mediated DMS on the proportion of the time budget tethered females allocate towards slow swimming, typically associated with feeding. The pooled data showed no differences in the proportion of the 25 min time budget allocated towards slow swimming between high (23.6 ± 9.74%) and low (29.1 ± 18.33%) DMS treatments. However, there was a high degree of variability between behavioral responses of individual copepods. We discuss the need for more detailed species-specific studies of individual level responses of copepods to chemical signals at different spatial scales to improve our understanding of chemical interactions between copepods and their prey. © 1996-2013 MDPI AG.

Item Type: Article
Subjects: Q Science > QD Chemistry
Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science and Health > Life Sciences, School of
Faculty of Science and Health > Mathematical Sciences, Department of
Depositing User: Edward Codling
Date Deposited: 05 Aug 2013 10:48
Last Modified: 22 Dec 2020 20:15

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