Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/75422
Title: Motile behavior and predation risk in planktonic copepods
Authors: van Someren Gréve H
Almeda, Rodrigo 
Kiørboe T
UNESCO Clasification: 251001 Oceanografía biológica
Issue Date: 2017
Journal: Limnology and Oceanography 
Abstract: Predation is an important source of mortality in zooplankton but factors governing predation risk inmarine food webs are still not well understood. Here, we examine the role of zooplankton behavior in deter-mining predation risk. We first quantified motility of copepods with different feeding behaviors (ambushfeeding, cruising, and feeding-current feeding). Second, we estimated remote predator detection and escapecharacteristics of the studied copepods. Third, we proposed a simple behavior-dependent encounter model topredict copepod predation risk from rheotactic predators. Finally, we compared our predictions with preda-tion risk previously determined experimentally. For similar sized copepods, predicted predation risks weresimilar between feeding-current feeders and cruising feeders, whereas predation was up to 8.5 times lower(range: 1.5–8.5) for ambush feeders. Predicted predation risks further differed between males and femalesdepending on feeding behavior: in ambush feeders males actively search for non-motile females and theirpredation risk was up to 6 times higher (range 1.2–6) than for females. In contrast, feeding current- andcruising feeders showed small differences in predation risk between genders. In all cases, predicted relativepredation risks between particular behaviors were confirmed by empirical data from previous predationexperiments. Our results demonstrate that prey behavior of zooplankton may lead to a predictable variationin predation risk from rheotactic predators of up to an order of magnitude, and therefore that individualbehavior is an important factor in structuring zooplankton communities
URI: http://hdl.handle.net/10553/75422
ISSN: 0024-3590
DOI: 10.1002/lno.10535
Source: Limnology and Oceanography [ISSN 0024-3590], v. 62 (5), p. 1810-1824
Appears in Collections:Artículos
Show full item record

Page view(s)

65
checked on Oct 1, 2022

Google ScholarTM

Check

Altmetric


Share



Export metadata



Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.