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Article: Experience matters: context-dependent decisions explain spatial foraging patterns in the deposit-feeding crab Scopimera intermedia

TitleExperience matters: context-dependent decisions explain spatial foraging patterns in the deposit-feeding crab Scopimera intermedia
Authors
Issue Date2017
PublisherThe Royal Society Publishing. The Journal's web site is located at http://rspb.royalsocietypublishing.org/
Citation
Proceedings of the Royal Society B: Biological Sciences, 2017, v. 284 n. 1861 How to Cite?
AbstractBehavioural decisions are often context-dependent, where information from immediate experience is incorporated into an individual's decision-making, particularly in complex environments. To test whether such mechanism is adopted by foragers in heterogeneous environments, we investigated the foraging behaviour of the deposit-feeding sand-bubbler crab, Scopimera intermedia. An individual-based model was constructed, based on an optimal-patch selection criterion, which implicitly assumed that individuals adjust foraging decisions based on immediate past experience. The model's predictions were tested on the shore by manipulating the location of food patches, where the crab showed a strong context-dependent foraging pattern. When resources were randomly distributed, the crab responded by spending 56% of time in enriched patches compared with only 28% in the same area when patches were composed of natural sediments. Shore manipulations varying resource distribution supported the underlying principles of the model mechanism, and highlighted the benefits of such a strategy in heterogeneous environments such as intertidal sediments where food resources vary at different spatial and temporal scales. The proposed model therefore provides a mechanistic process, based on optimal foraging, to predict foraging decisions and movement patterns of animals feeding in heterogeneous landscapes.
Persistent Identifierhttp://hdl.handle.net/10722/245856
ISSN
2019 Impact Factor: 4.637
2015 SCImago Journal Rankings: 2.375
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHui, TY-
dc.contributor.authorWilliams, GA-
dc.date.accessioned2017-09-18T02:18:07Z-
dc.date.available2017-09-18T02:18:07Z-
dc.date.issued2017-
dc.identifier.citationProceedings of the Royal Society B: Biological Sciences, 2017, v. 284 n. 1861-
dc.identifier.issn0962-8452-
dc.identifier.urihttp://hdl.handle.net/10722/245856-
dc.description.abstractBehavioural decisions are often context-dependent, where information from immediate experience is incorporated into an individual's decision-making, particularly in complex environments. To test whether such mechanism is adopted by foragers in heterogeneous environments, we investigated the foraging behaviour of the deposit-feeding sand-bubbler crab, Scopimera intermedia. An individual-based model was constructed, based on an optimal-patch selection criterion, which implicitly assumed that individuals adjust foraging decisions based on immediate past experience. The model's predictions were tested on the shore by manipulating the location of food patches, where the crab showed a strong context-dependent foraging pattern. When resources were randomly distributed, the crab responded by spending 56% of time in enriched patches compared with only 28% in the same area when patches were composed of natural sediments. Shore manipulations varying resource distribution supported the underlying principles of the model mechanism, and highlighted the benefits of such a strategy in heterogeneous environments such as intertidal sediments where food resources vary at different spatial and temporal scales. The proposed model therefore provides a mechanistic process, based on optimal foraging, to predict foraging decisions and movement patterns of animals feeding in heterogeneous landscapes.-
dc.languageeng-
dc.publisherThe Royal Society Publishing. The Journal's web site is located at http://rspb.royalsocietypublishing.org/-
dc.relation.ispartofProceedings of the Royal Society B: Biological Sciences-
dc.titleExperience matters: context-dependent decisions explain spatial foraging patterns in the deposit-feeding crab Scopimera intermedia-
dc.typeArticle-
dc.identifier.emailWilliams, GA: hrsbwga@hkucc.hku.hk-
dc.identifier.authorityWilliams, GA=rp00804-
dc.identifier.doi10.1098/rspb.2017.1442-
dc.identifier.pmcidPMC5577497-
dc.identifier.hkuros277807-
dc.identifier.hkuros289713-
dc.identifier.volume284-
dc.identifier.issue1861-
dc.identifier.isiWOS:000408662400003-
dc.publisher.placeUnited Kingdom-

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