Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean
Age and growth estimates for the blue shark (Prionace glauca) were derived from 411 vertebral centra and 43 tag-recaptured blue sharks collected in the North Atlantic, ranging in length from 49 to 312 cm fork length (FL). The vertebrae of two oxytetracycline-injected recaptured blue sharks support a...
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ftoceandocs:oai:aquadocs.org:1834/31005 2023-05-15T17:29:57+02:00 Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean Skomal, Gregory B. Natanson, Lisa J. 2003 application/pdf 627-639 http://hdl.handle.net/1834/31005 en eng http://fishbull.noaa.gov/1013/13skomal.pdf 0090-0656 http://hdl.handle.net/1834/31005 http://aquaticcommons.org/id/eprint/15152 403 2014-05-29 07:08:12 15152 United States National Marine Fisheries Service Biology Ecology Fisheries article TRUE 2003 ftoceandocs 2023-04-06T17:04:18Z Age and growth estimates for the blue shark (Prionace glauca) were derived from 411 vertebral centra and 43 tag-recaptured blue sharks collected in the North Atlantic, ranging in length from 49 to 312 cm fork length (FL). The vertebrae of two oxytetracycline-injected recaptured blue sharks support an annual spring deposition of growth bands in the vertebrae in sharks up to 192 cm FL. Males andfemales were aged to 16 and 15 years, respectively, and full maturity is attained by 5 years of age in both sexes.Both sexes grew similarly to age seven, when growth rates decreased in males and remained constant in females.Growth rates from tag-recaptured individuals agreed with those derived from vertebral annuli for smaller sharks but appeared overestimated for larger sharks. Von Bertalanffy growth parameters derived from vertebral length-at-age data are L∞ = 282 cm FL, K = 0.18, and t0 = –1.35 for males, andL∞ = 310 cm FL, K = 0.13, and t0 = −1.77 for females. The species grows faster and has a shorter life span than previously reported for these waters. Article in Journal/Newspaper North Atlantic IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Skomal, Gregory B. Natanson, Lisa J. Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean |
topic_facet |
Biology Ecology Fisheries |
description |
Age and growth estimates for the blue shark (Prionace glauca) were derived from 411 vertebral centra and 43 tag-recaptured blue sharks collected in the North Atlantic, ranging in length from 49 to 312 cm fork length (FL). The vertebrae of two oxytetracycline-injected recaptured blue sharks support an annual spring deposition of growth bands in the vertebrae in sharks up to 192 cm FL. Males andfemales were aged to 16 and 15 years, respectively, and full maturity is attained by 5 years of age in both sexes.Both sexes grew similarly to age seven, when growth rates decreased in males and remained constant in females.Growth rates from tag-recaptured individuals agreed with those derived from vertebral annuli for smaller sharks but appeared overestimated for larger sharks. Von Bertalanffy growth parameters derived from vertebral length-at-age data are L∞ = 282 cm FL, K = 0.18, and t0 = –1.35 for males, andL∞ = 310 cm FL, K = 0.13, and t0 = −1.77 for females. The species grows faster and has a shorter life span than previously reported for these waters. |
format |
Article in Journal/Newspaper |
author |
Skomal, Gregory B. Natanson, Lisa J. |
author_facet |
Skomal, Gregory B. Natanson, Lisa J. |
author_sort |
Skomal, Gregory B. |
title |
Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean |
title_short |
Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean |
title_full |
Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean |
title_fullStr |
Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean |
title_full_unstemmed |
Age and growth of the blue shark (Prionace glauca) in the North Atlantic Ocean |
title_sort |
age and growth of the blue shark (prionace glauca) in the north atlantic ocean |
publishDate |
2003 |
url |
http://hdl.handle.net/1834/31005 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://aquaticcommons.org/id/eprint/15152 403 2014-05-29 07:08:12 15152 United States National Marine Fisheries Service |
op_relation |
http://fishbull.noaa.gov/1013/13skomal.pdf 0090-0656 http://hdl.handle.net/1834/31005 |
_version_ |
1766125193666756608 |