Validated age and growth of the porbeagle shark (Lamna nasus
Growth parameters were estimated for porbeagle shark (Lamna nasus) in the northwest Atlantic Ocean on the basis of vertebral annuli. A total of 578 vertebrae was analyzed. Annuli were validated up to an age of 11 years by using vertebrae from recaptured oxytetracycline-injected and known age sharks....
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.490.8527 2023-05-15T17:06:29+02:00 Validated age and growth of the porbeagle shark (Lamna nasus Lisa J. Natanson Joseph J. Mello Steven E. Campana The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8527 http://www.flyingsharks.eu/literature/iccat/CV054041261 - Validated age and growth POR.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8527 http://www.flyingsharks.eu/literature/iccat/CV054041261 - Validated age and growth POR.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.flyingsharks.eu/literature/iccat/CV054041261 - Validated age and growth POR.pdf text 2002 ftciteseerx 2016-01-08T08:30:20Z Growth parameters were estimated for porbeagle shark (Lamna nasus) in the northwest Atlantic Ocean on the basis of vertebral annuli. A total of 578 vertebrae was analyzed. Annuli were validated up to an age of 11 years by using vertebrae from recaptured oxytetracycline-injected and known age sharks. Males and females grew at similar rates until the size of male sexual maturity, after which the relative growth of the males declined. The growth rate of the females declined in a similar manner at the onset of maturity. Growth curves were consistent with those derived from tag/recapture analyses (GROTAG) of 76 recaptured fish, and with length-frequency methods using measurements from 13,589 individuals. Von Bertalanffy growth curve parameters (combined sexes) were: L ¥ = 289.4 cm fork length, K = 0.07 and t0 =-6.06. Maximum age, based on vertebral band pair counts, was 25 and 24 years for males and females, respectively. Longevity calculations, however, indicated a maximum age of 45 to 46 years in an unfished population. RÉSUMÉ Text Lamna nasus Northwest Atlantic Porbeagle Unknown |
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description |
Growth parameters were estimated for porbeagle shark (Lamna nasus) in the northwest Atlantic Ocean on the basis of vertebral annuli. A total of 578 vertebrae was analyzed. Annuli were validated up to an age of 11 years by using vertebrae from recaptured oxytetracycline-injected and known age sharks. Males and females grew at similar rates until the size of male sexual maturity, after which the relative growth of the males declined. The growth rate of the females declined in a similar manner at the onset of maturity. Growth curves were consistent with those derived from tag/recapture analyses (GROTAG) of 76 recaptured fish, and with length-frequency methods using measurements from 13,589 individuals. Von Bertalanffy growth curve parameters (combined sexes) were: L ¥ = 289.4 cm fork length, K = 0.07 and t0 =-6.06. Maximum age, based on vertebral band pair counts, was 25 and 24 years for males and females, respectively. Longevity calculations, however, indicated a maximum age of 45 to 46 years in an unfished population. RÉSUMÉ |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Lisa J. Natanson Joseph J. Mello Steven E. Campana |
spellingShingle |
Lisa J. Natanson Joseph J. Mello Steven E. Campana Validated age and growth of the porbeagle shark (Lamna nasus |
author_facet |
Lisa J. Natanson Joseph J. Mello Steven E. Campana |
author_sort |
Lisa J. Natanson |
title |
Validated age and growth of the porbeagle shark (Lamna nasus |
title_short |
Validated age and growth of the porbeagle shark (Lamna nasus |
title_full |
Validated age and growth of the porbeagle shark (Lamna nasus |
title_fullStr |
Validated age and growth of the porbeagle shark (Lamna nasus |
title_full_unstemmed |
Validated age and growth of the porbeagle shark (Lamna nasus |
title_sort |
validated age and growth of the porbeagle shark (lamna nasus |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8527 http://www.flyingsharks.eu/literature/iccat/CV054041261 - Validated age and growth POR.pdf |
genre |
Lamna nasus Northwest Atlantic Porbeagle |
genre_facet |
Lamna nasus Northwest Atlantic Porbeagle |
op_source |
http://www.flyingsharks.eu/literature/iccat/CV054041261 - Validated age and growth POR.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8527 http://www.flyingsharks.eu/literature/iccat/CV054041261 - Validated age and growth POR.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766061625449644032 |