Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry
Previously unaccounted cryptic speciation requires revaluating species identification, particularly for fisheries assessment purposes. We describe a rapid and reliable method for distinguishing between phenotypically similar species that utilizes simple otolith morphometry (length, width, thickness...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2014
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0165783613002385 http://hdl.handle.net/20.500.11937/49331 |
| _version_ | 1848758217733046272 |
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| author | Wakefield, C. Williams, A. Newman, Stephen Bunel, M. Dowling, C. Armstrong, C. Langlois, T. |
| author_facet | Wakefield, C. Williams, A. Newman, Stephen Bunel, M. Dowling, C. Armstrong, C. Langlois, T. |
| author_sort | Wakefield, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Previously unaccounted cryptic speciation requires revaluating species identification, particularly for fisheries assessment purposes. We describe a rapid and reliable method for distinguishing between phenotypically similar species that utilizes simple otolith morphometry (length, width, thickness and weight) with or without fish length, within a traditional canonical discriminant analysis (CDA). Data were subject to CDA in order to differentiate between the cryptic Etelis carbunculus (ruby snapper) and E. marshi (pygmy ruby snapper). A very high allocation success rate was achieved using otolith morphometry and fork length (99.6% for E. carbunculus and 100% for E. marshi) or otolith morphometry only (98.8% for E. carbunculus and 100% for E. marshi), which indicated the high discriminatory power of this method. The CDA successfully grouped samples of the same species collected from different locations in the eastern central Indian and South Pacific Oceans, indicating the robustness of this technique to discriminate between species, irrespective of their geographic range. This technique can be applied to archived otolith collections to confirm teleost species identification, and likely has broader applications for species identification involving extractive, diet or video-based studies. |
| first_indexed | 2025-11-14T09:40:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-49331 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:40:29Z |
| publishDate | 2014 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-493312017-03-15T22:56:20Z Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry Wakefield, C. Williams, A. Newman, Stephen Bunel, M. Dowling, C. Armstrong, C. Langlois, T. Speciation - Species identification Canonical discriminant analysis Etelis carbunculus E. marshi Morphometrics Deepwater teleosts Previously unaccounted cryptic speciation requires revaluating species identification, particularly for fisheries assessment purposes. We describe a rapid and reliable method for distinguishing between phenotypically similar species that utilizes simple otolith morphometry (length, width, thickness and weight) with or without fish length, within a traditional canonical discriminant analysis (CDA). Data were subject to CDA in order to differentiate between the cryptic Etelis carbunculus (ruby snapper) and E. marshi (pygmy ruby snapper). A very high allocation success rate was achieved using otolith morphometry and fork length (99.6% for E. carbunculus and 100% for E. marshi) or otolith morphometry only (98.8% for E. carbunculus and 100% for E. marshi), which indicated the high discriminatory power of this method. The CDA successfully grouped samples of the same species collected from different locations in the eastern central Indian and South Pacific Oceans, indicating the robustness of this technique to discriminate between species, irrespective of their geographic range. This technique can be applied to archived otolith collections to confirm teleost species identification, and likely has broader applications for species identification involving extractive, diet or video-based studies. 2014 Journal Article http://hdl.handle.net/20.500.11937/49331 http://www.sciencedirect.com/science/article/pii/S0165783613002385 Elsevier BV restricted |
| spellingShingle | Speciation - Species identification Canonical discriminant analysis Etelis carbunculus E. marshi Morphometrics Deepwater teleosts Wakefield, C. Williams, A. Newman, Stephen Bunel, M. Dowling, C. Armstrong, C. Langlois, T. Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry |
| title | Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry |
| title_full | Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry |
| title_fullStr | Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry |
| title_full_unstemmed | Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry |
| title_short | Rapid and reliable multivariate discrimination for two cryptic Eteline snappers using otolith morphometry |
| title_sort | rapid and reliable multivariate discrimination for two cryptic eteline snappers using otolith morphometry |
| topic | Speciation - Species identification Canonical discriminant analysis Etelis carbunculus E. marshi Morphometrics Deepwater teleosts |
| url | http://www.sciencedirect.com/science/article/pii/S0165783613002385 http://hdl.handle.net/20.500.11937/49331 |