Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of Mexico
The objective of this study was to evaluate whether age-0 lane snapper Lutjanus synagris otolith chemical signatures could serve as accurate proxies for those of its congener, red snapper L. campechanus, among northern Gulf of Mexico (GOM) nursery regions. Red (n = 90) and lane (n = 53) snappers wer...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Inter-Research
2014-06-01
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| Series: | Aquatic Biology |
| Online Access: | https://www.int-res.com/abstracts/ab/v21/n1/p1-10/ |
| _version_ | 1818834057311551488 |
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| author | WF Patterson BK Barnett M Zapp Sluis JH Cowan AM Shiller |
| author_facet | WF Patterson BK Barnett M Zapp Sluis JH Cowan AM Shiller |
| author_sort | WF Patterson |
| collection | DOAJ |
| description | The objective of this study was to evaluate whether age-0 lane snapper Lutjanus synagris otolith chemical signatures could serve as accurate proxies for those of its congener, red snapper L. campechanus, among northern Gulf of Mexico (GOM) nursery regions. Red (n = 90) and lane (n = 53) snappers were sampled from 3 regions of the northern GOM in fall 2005, and their otolith chemistry was analyzed with sector field-inductively coupled plasma-mass spectrometry (Ba:Ca, Mg:Ca, Mn:Ca, Sr:Ca, Li:Ca) or stable isotope ratio-mass spectrometry (δ13C and δ18O). Chemical signatures were significantly different among regions (MANOVA, p < 0.001) and between species (MANOVA, p = 0.029), with the species effect being driven by significant differences in 4 of the 7 constituents analyzed (ANOVA, p < 0.036). The significant region effect persisted (MANOVA, p < 0.001), but the species effect was non-significant (MANOVA, p = 0.964) when constituent values were normalized to species-specific means. Mean regional classification accuracies from linear discriminant functions computed with otolith constituent data were 84% for lane snapper and 80% for red snapper whether data were normalized or not. Maximum likelihood models parameterized with normalized lane snapper otolith chemistry data estimated red snapper regional composition reasonably well among mixed-region samples (mean error = 9.7% among models). Therefore, it appears age-0 lane snapper otolith chemical signatures can serve as accurate proxies for those of red snapper in the northern GOM. These results have broader implications for deriving natural tags based on otolith chemistry for fishes that may have low abundance in parts of their range. |
| first_indexed | 2024-12-19T02:28:46Z |
| format | Article |
| id | doaj.art-e67bf4ac4f2d4ee5bb4b001543dea5ba |
| institution | Directory Open Access Journal |
| issn | 1864-7782 1864-7790 |
| language | English |
| last_indexed | 2024-12-19T02:28:46Z |
| publishDate | 2014-06-01 |
| publisher | Inter-Research |
| record_format | Article |
| series | Aquatic Biology |
| spelling | doaj.art-e67bf4ac4f2d4ee5bb4b001543dea5ba2022-12-21T20:39:48ZengInter-ResearchAquatic Biology1864-77821864-77902014-06-0121111010.3354/ab00567Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of MexicoWF Patterson0BK Barnett1M Zapp Sluis2JH Cowan3AM Shiller4University of South Alabama and Dauphin Island Sea Lab, 101 Bienville Blvd, Dauphin Island, Alabama 36528, USANational Marine Fisheries Service, Southeast Fisheries Science Center, Panama City Laboratory, 3500 Delwood Beach Road, Panama City Beach, Florida 32408, USAHarte Research Institute for Gulf of Mexico Studies, Texas A&M University - Corpus Christi, 6300 Ocean Drive, Corpus Christi, Texas 78412, USADepartment of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, Louisiana 70803, USAUniversity of Southern Mississippi, Department of Marine Science, 1020 Balch Blvd., Stennis Space Center, Mississippi 39529, USAThe objective of this study was to evaluate whether age-0 lane snapper Lutjanus synagris otolith chemical signatures could serve as accurate proxies for those of its congener, red snapper L. campechanus, among northern Gulf of Mexico (GOM) nursery regions. Red (n = 90) and lane (n = 53) snappers were sampled from 3 regions of the northern GOM in fall 2005, and their otolith chemistry was analyzed with sector field-inductively coupled plasma-mass spectrometry (Ba:Ca, Mg:Ca, Mn:Ca, Sr:Ca, Li:Ca) or stable isotope ratio-mass spectrometry (δ13C and δ18O). Chemical signatures were significantly different among regions (MANOVA, p < 0.001) and between species (MANOVA, p = 0.029), with the species effect being driven by significant differences in 4 of the 7 constituents analyzed (ANOVA, p < 0.036). The significant region effect persisted (MANOVA, p < 0.001), but the species effect was non-significant (MANOVA, p = 0.964) when constituent values were normalized to species-specific means. Mean regional classification accuracies from linear discriminant functions computed with otolith constituent data were 84% for lane snapper and 80% for red snapper whether data were normalized or not. Maximum likelihood models parameterized with normalized lane snapper otolith chemistry data estimated red snapper regional composition reasonably well among mixed-region samples (mean error = 9.7% among models). Therefore, it appears age-0 lane snapper otolith chemical signatures can serve as accurate proxies for those of red snapper in the northern GOM. These results have broader implications for deriving natural tags based on otolith chemistry for fishes that may have low abundance in parts of their range.https://www.int-res.com/abstracts/ab/v21/n1/p1-10/ |
| spellingShingle | WF Patterson BK Barnett M Zapp Sluis JH Cowan AM Shiller Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of Mexico Aquatic Biology |
| title | Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of Mexico |
| title_full | Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of Mexico |
| title_fullStr | Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of Mexico |
| title_full_unstemmed | Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of Mexico |
| title_short | Interspecific variation in juvenile snapper otolith chemical signatures in the northern Gulf of Mexico |
| title_sort | interspecific variation in juvenile snapper otolith chemical signatures in the northern gulf of mexico |
| url | https://www.int-res.com/abstracts/ab/v21/n1/p1-10/ |
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