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dc.contributor.authorHobbs, Jean-Paul
dc.contributor.authorFrisch, A.
dc.contributor.authorMutz, S.
dc.contributor.authorFord, B.
dc.date.accessioned2017-01-30T12:56:59Z
dc.date.available2017-01-30T12:56:59Z
dc.date.created2015-04-23T03:53:29Z
dc.date.issued2014
dc.identifier.citationHobbs, J. and Frisch, A. and Mutz, S. and Ford, B. 2014. Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus. Journal of Fish Biology. 84: pp. 328-338.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/27114
dc.identifier.doi10.1111/jfb.12287
dc.description.abstract

This study investigated whether teeth and dorsal fin spines could be used as non-lethal methods ofage estimation for a vulnerable and highly valued tropical fisheries species, coral trout Plectropomus leopardus. Age estimation of individuals from 2 to 9 years old revealed that dorsal spines represent an accurate ageing method (90% agreement with otoliths) that was more precise [average per cent error (APE)=4·1, coefficient of variation (c.v.)=5·8%] than otoliths (APE = 6·2, c.v. = 8·7%). Of the three methods for age estimation (otoliths, dorsal spines and teeth), spines were the most time and cost efficient. An aquarium-based study also found that removing a dorsal spine or tooth did not affect survivorship or growth of P. leopardus. No annuli were visible in teeth despite taking transverse and longitudinal sections throughout the tooth and trialling several different laboratory methods. Although teeth may not be suitable for estimating age of P. leopardus, dorsal spines appear to be an acceptably accurate, precise and efficient method for non-lethal ageing of individuals from 2 to 9 years old in this tropical species.

dc.publisherBlackwell Publishing
dc.subjectSerranidae
dc.subjectage determination
dc.subjectfisheries management
dc.subjectageing
dc.subjectnon-destructive
dc.subjectvulnerable species
dc.titleEvaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus
dc.typeJournal Article
dcterms.source.volume84
dcterms.source.startPage328
dcterms.source.endPage338
dcterms.source.issn00221112
dcterms.source.titleJournal of Fish Biology
curtin.note

This is the accepted version of an article which has been published in final form as: Hobbs, J. and Frisch, A. and Mutz, S. and Ford, B. 2014. Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus. Journal of Fish Biology. 84: pp. 328-338. http://doi.org/10.1111/jfb.12287

curtin.accessStatusOpen access


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