Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus
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 represen...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Blackwell Publishing
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/27114 |
| _version_ | 1848752174071283712 |
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| author | Hobbs, Jean-Paul Frisch, A. Mutz, S. Ford, B. |
| author_facet | Hobbs, Jean-Paul Frisch, A. Mutz, S. Ford, B. |
| author_sort | Hobbs, Jean-Paul |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T08:04:25Z |
| format | Journal Article |
| id | curtin-20.500.11937-27114 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:04:25Z |
| publishDate | 2014 |
| publisher | Blackwell Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-271142019-02-19T05:36:13Z Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus Hobbs, Jean-Paul Frisch, A. Mutz, S. Ford, B. Serranidae age determination fisheries management ageing non-destructive vulnerable species 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. 2014 Journal Article http://hdl.handle.net/20.500.11937/27114 10.1111/jfb.12287 Blackwell Publishing fulltext |
| spellingShingle | Serranidae age determination fisheries management ageing non-destructive vulnerable species Hobbs, Jean-Paul Frisch, A. Mutz, S. Ford, B. Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus |
| title | Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus |
| title_full | Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus |
| title_fullStr | Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus |
| title_full_unstemmed | Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus |
| title_short | Evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout Plectropomus leopardus |
| title_sort | evaluating the effectiveness of teeth and dorsal fin spines for non-lethal age estimation of a tropical reef fish, coral trout plectropomus leopardus |
| topic | Serranidae age determination fisheries management ageing non-destructive vulnerable species |
| url | http://hdl.handle.net/20.500.11937/27114 |