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Article: The effects of leaf litter characteristics on feeding and fitness of a tropical stream shredder, Anisocentropus maculatus (Trichoptera : Calamoceratidae)

TitleThe effects of leaf litter characteristics on feeding and fitness of a tropical stream shredder, Anisocentropus maculatus (Trichoptera : Calamoceratidae)
Authors
KeywordsHong Kong
Leaf toughness
Nitrogen content
Issue Date2008
PublisherCSIRO Publishing. The Journal's web site is located at http://www.publish.csiro.au/journals/mfr/
Citation
Marine And Freshwater Research, 2008, v. 59 n. 10, p. 897-901 How to Cite?
AbstractPlant diversity is high in the tropics, resulting in leaf litter of differing quality in streams that may affect feeding and fitness of shredders. The effects of leaf toughness and nitrogen content on feeding and fitness (pupal weight) of a Hong Kong shredder, Anisocentropus maculatus (Trichoptera : Calamoceratidae), were investigated in laboratory feeding trials that included leaves from five plant species with contrasting characteristics. Leaf toughness adversely affected the feeding rates and fitness of A. maculatus. Feeding rates on tough leaves (Indocalamus sinicus and Pandanus furcatus) were >96% lower compared with soft leaves (Ficus fistulosa and Liquidambar formosana), whereas feeding rates on moderately tough leaves (Melaleuca quinquenervia) were intermediate. Larval mortality was >7 times higher on tough (78-100%) than softer leaves (0-11%), and resulting pupae were >71% lighter. Leaf nitrogen content was not a good determinant of feeding or fitness of A. maculatus, but larvae appeared to eat greater amounts of nitrogen-poor leaves to compensate for lower food quality. Leaf toughness was the primary determinant of feeding and fitness of A. maculatus, and the refractory leaves of many tropical plants could account for the scarcity of shredders in tropical streams. © CSIRO 2008.
Persistent Identifierhttp://hdl.handle.net/10722/60730
ISSN
2015 Impact Factor: 1.583
2015 SCImago Journal Rankings: 0.821
ISI Accession Number ID
Funding AgencyGrant Number
Council of Hong Kong Special Administrative Region, China[HKU] 7509/06M
University of Hong Kong
Funding Information:

We are grateful to Dr Niall Connolly and Dr Luz Boyero ( James Cook University) for providing the penetrometer used in this study, as well as to Dr Boyero and two anonymous referees for their constructive comments on the manuscript. Ms Lily Ng provided invaluable laboratory support. A permit for collection of plants/animals was issued by the Agriculture, Fisheries and Conservation Department of the Government of the Hong Kong Special Administrative Region, China. The work was partially supported by a grant from the Research Grants Council of Hong Kong Special Administrative Region, China (Project No. [HKU] 7509/06M), and by a postgraduate studentship awarded to A. O. Y. Li during her M.Phil. studies at the University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorLi, AOYen_HK
dc.contributor.authorDudgeon, Den_HK
dc.date.accessioned2010-05-31T04:17:18Z-
dc.date.available2010-05-31T04:17:18Z-
dc.date.issued2008en_HK
dc.identifier.citationMarine And Freshwater Research, 2008, v. 59 n. 10, p. 897-901en_HK
dc.identifier.issn1323-1650en_HK
dc.identifier.urihttp://hdl.handle.net/10722/60730-
dc.description.abstractPlant diversity is high in the tropics, resulting in leaf litter of differing quality in streams that may affect feeding and fitness of shredders. The effects of leaf toughness and nitrogen content on feeding and fitness (pupal weight) of a Hong Kong shredder, Anisocentropus maculatus (Trichoptera : Calamoceratidae), were investigated in laboratory feeding trials that included leaves from five plant species with contrasting characteristics. Leaf toughness adversely affected the feeding rates and fitness of A. maculatus. Feeding rates on tough leaves (Indocalamus sinicus and Pandanus furcatus) were >96% lower compared with soft leaves (Ficus fistulosa and Liquidambar formosana), whereas feeding rates on moderately tough leaves (Melaleuca quinquenervia) were intermediate. Larval mortality was >7 times higher on tough (78-100%) than softer leaves (0-11%), and resulting pupae were >71% lighter. Leaf nitrogen content was not a good determinant of feeding or fitness of A. maculatus, but larvae appeared to eat greater amounts of nitrogen-poor leaves to compensate for lower food quality. Leaf toughness was the primary determinant of feeding and fitness of A. maculatus, and the refractory leaves of many tropical plants could account for the scarcity of shredders in tropical streams. © CSIRO 2008.en_HK
dc.languageengen_HK
dc.publisherCSIRO Publishing. The Journal's web site is located at http://www.publish.csiro.au/journals/mfr/en_HK
dc.relation.ispartofMarine and Freshwater Researchen_HK
dc.subjectHong Kongen_HK
dc.subjectLeaf toughnessen_HK
dc.subjectNitrogen contenten_HK
dc.titleThe effects of leaf litter characteristics on feeding and fitness of a tropical stream shredder, Anisocentropus maculatus (Trichoptera : Calamoceratidae)en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1323-1650&volume=59&issue=10&spage=897&epage=901&date=2008&atitle=The+effects+of+leaf+litter+characteristics+on+feeding+and+fitness+of+a+tropical+stream+shredder,+Anisocentropus+maculatus+(Trichoptera+:+Calamoceratidae)-
dc.identifier.emailDudgeon, D: ddudgeon@hku.hken_HK
dc.identifier.authorityDudgeon, D=rp00691en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1071/MF08120en_HK
dc.identifier.scopuseid_2-s2.0-54949145400en_HK
dc.identifier.hkuros163370en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-54949145400&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume59en_HK
dc.identifier.issue10en_HK
dc.identifier.spage897en_HK
dc.identifier.epage901en_HK
dc.identifier.isiWOS:000260377700010-
dc.publisher.placeAustraliaen_HK
dc.identifier.scopusauthoridLi, AOY=24773824300en_HK
dc.identifier.scopusauthoridDudgeon, D=7006559840en_HK

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