Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean
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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ftaquaticcommons:oai:generic.eprints.org:15209 2023-05-15T17:06:29+02:00 Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean Natanson, Lisa J. Mello, Joseph J. Campana, Steven E. 2002 application/pdf http://aquaticcommons.org/15209/ http://fishbull.noaa.gov/1002/10natans.pdf http://aquaticcommons.org/15209/1/10natans.pdf en eng http://aquaticcommons.org/15209/1/10natans.pdf Natanson, Lisa J. and Mello, Joseph J. and Campana, Steven E. (2002) Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean. Fishery Bulletin, 100(2), pp. 266-278. Biology Fisheries Management Article PeerReviewed 2002 ftaquaticcommons 2020-02-27T09:26:55Z 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 those based on length-frequency methods with measurements from 13,589 individuals. Von Bertalanffy growth curve parameters (combined sexes) were Lā = 289.4 cm fork length, K = 0.07 and t0 = ā6.06. 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. Article in Journal/Newspaper Lamna nasus North Atlantic Northwest Atlantic Porbeagle International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
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Open Polar |
collection |
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
op_collection_id |
ftaquaticcommons |
language |
English |
topic |
Biology Fisheries Management |
spellingShingle |
Biology Fisheries Management Natanson, Lisa J. Mello, Joseph J. Campana, Steven E. Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean |
topic_facet |
Biology Fisheries Management |
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 those based on length-frequency methods with measurements from 13,589 individuals. Von Bertalanffy growth curve parameters (combined sexes) were Lā = 289.4 cm fork length, K = 0.07 and t0 = ā6.06. 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. |
format |
Article in Journal/Newspaper |
author |
Natanson, Lisa J. Mello, Joseph J. Campana, Steven E. |
author_facet |
Natanson, Lisa J. Mello, Joseph J. Campana, Steven E. |
author_sort |
Natanson, Lisa J. |
title |
Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean |
title_short |
Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean |
title_full |
Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean |
title_fullStr |
Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean |
title_full_unstemmed |
Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean |
title_sort |
validated age and growth of the porbeagle shark (lamna nasus) in the western north atlantic ocean |
publishDate |
2002 |
url |
http://aquaticcommons.org/15209/ http://fishbull.noaa.gov/1002/10natans.pdf http://aquaticcommons.org/15209/1/10natans.pdf |
genre |
Lamna nasus North Atlantic Northwest Atlantic Porbeagle |
genre_facet |
Lamna nasus North Atlantic Northwest Atlantic Porbeagle |
op_relation |
http://aquaticcommons.org/15209/1/10natans.pdf Natanson, Lisa J. and Mello, Joseph J. and Campana, Steven E. (2002) Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean. Fishery Bulletin, 100(2), pp. 266-278. |
_version_ |
1766061626282213376 |