Open WL Archief (OWA)

Over het archief

Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

Optimal foraging and risk of claw damage: how flexible are shore crabs in their prey size selectivity? Smallegange, I.M.; Eppenga, J.M.A.; van der Meer, J. (2008). Optimal foraging and risk of claw damage: how flexible are shore crabs in their prey size selectivity? J. Exp. Mar. Biol. Ecol. 367(2): 157-163. https://dx.doi.org/10.1016/j.jembe.2008.09.011 In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697, meer Is gerelateerd aan: Smallegange, I.M.; Eppenga, J.M.A.; van der Meer, J. (2007). Optimal foraging and risk of claw damage: how flexible are shore crabs in their prey size selectivity?, in: Smallegange, I.M. Interference competition and patch choice in foraging shore crabs. pp. 65-88, meer

---

Beschikbaar in	Auteurs
VLIZ: Non-open access 354208 [ aanvragen ]

---

Trefwoord

Marien/Kust

Author keywords

Discrete marginal value theorem; Energy maximization premise; Optimal foraging theory; Predation; Prey size selection

---

Auteurs		Top
Smallegange, I.M. Eppenga, J.M.A. van der Meer, J., meer

---

Abstract

Understanding the behavioural mechanisms that underlie prey size preference of predators is an essential component of unravelling the processes that govern predator-prey dynamics. In marine systems, despite being able to consume larger and more profitable prey, many molluscivorous predators show a preference for smaller, less profitable prey, most likely to minimize the risk of damaging feeding extremities. Here we assessed the flexibility of this prey size preference. We observed that shore crabs (Carcinus maenas) that were food deprived, and which were offered mussels (Mytilus edulis) of different sizes in dichotomous preference tests, preferred smaller, less profitable mussels. The same result was observed for crabs foraging with a conspecific competitor. Only crabs that were conditioned to feed on the larger, most profitable mussels shifted their prey size preference and ranked the most profitable mussels as highest. Although shore crabs showed flexibility in prey size preference, through which they would be able to cope with environmental variability, our results in general emphasize preference for smaller prey. We discuss the possibility that crabs maximize their long-term feeding rate, in which case it can be optimal to select these smaller mussels.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.