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Article: Food segregation in three species of portunid crabs

TitleFood segregation in three species of portunid crabs
Authors
KeywordsDiet
Food segregation
Inter-specific competition
Portunid crabs
Issue Date1997
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0018-8158
Citation
Hydrobiologia, 1997, v. 362, p. 107-113 How to Cite?
AbstractGastric mills of 2,619 specimens of portunid crabs (Portunus pelagicus, P. sanguinolentus and Charybdis feriatus) in Tolo Harbour, Hong Kong were examined. Of these, 1,498 contained recognizable food items. A total of 34 food items were identified, 10 of which (29.4%) were common to the three crab species. The principal food items were bivalves, decapods, fish and algae. However, the percent frequency of occurrence of these food items differed significantly (ANOVA, p < 0.001) among the crabs. In addition to these principal food items, differences were noted in other dietary categories: P. pelagicus and P. sanguinolentus fed on the brittle star Ophiura kinbergi, whereas P sanguinolentus and C. feriatus fed on detritus and gastropods. The diet of P. sanguinolentus was found to be more similar to C. feriatus than to P. pelagicus. Exploitation of different food items and selective feeding on common prey may reduce inter-specific competition for natural food resources and allow the three portunid crabs to co-exist in the same habitat.
Persistent Identifierhttp://hdl.handle.net/10722/92718
ISSN
2015 Impact Factor: 2.051
2015 SCImago Journal Rankings: 1.043
References

 

DC FieldValueLanguage
dc.contributor.authorWu, RSSen_HK
dc.contributor.authorShin, PKSen_HK
dc.date.accessioned2010-09-17T10:55:08Z-
dc.date.available2010-09-17T10:55:08Z-
dc.date.issued1997en_HK
dc.identifier.citationHydrobiologia, 1997, v. 362, p. 107-113en_HK
dc.identifier.issn0018-8158en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92718-
dc.description.abstractGastric mills of 2,619 specimens of portunid crabs (Portunus pelagicus, P. sanguinolentus and Charybdis feriatus) in Tolo Harbour, Hong Kong were examined. Of these, 1,498 contained recognizable food items. A total of 34 food items were identified, 10 of which (29.4%) were common to the three crab species. The principal food items were bivalves, decapods, fish and algae. However, the percent frequency of occurrence of these food items differed significantly (ANOVA, p < 0.001) among the crabs. In addition to these principal food items, differences were noted in other dietary categories: P. pelagicus and P. sanguinolentus fed on the brittle star Ophiura kinbergi, whereas P sanguinolentus and C. feriatus fed on detritus and gastropods. The diet of P. sanguinolentus was found to be more similar to C. feriatus than to P. pelagicus. Exploitation of different food items and selective feeding on common prey may reduce inter-specific competition for natural food resources and allow the three portunid crabs to co-exist in the same habitat.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0018-8158en_HK
dc.relation.ispartofHydrobiologiaen_HK
dc.subjectDieten_HK
dc.subjectFood segregationen_HK
dc.subjectInter-specific competitionen_HK
dc.subjectPortunid crabsen_HK
dc.titleFood segregation in three species of portunid crabsen_HK
dc.typeArticleen_HK
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_HK
dc.identifier.authorityWu, RSS=rp01398en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1023/A:1003126415990en_HK
dc.identifier.scopuseid_2-s2.0-0031402117en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031402117&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume362en_HK
dc.identifier.spage107en_HK
dc.identifier.epage113en_HK
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridWu, RSS=7402945079en_HK
dc.identifier.scopusauthoridShin, PKS=7004445653en_HK

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