Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine
The northwest Atlantic population of thorny skates (Amblyraja radiata) inhabits an area that ranges from Greenland and Hudson Bay, Canada, to South Carolina. Despite such a wide range, very little is known about most aspects of the biology of this species. Recent stock assessment studies in the nort...
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ftuninhampshire:oai:scholars.unh.edu:biosci_facpub-1002 2024-09-15T18:09:56+00:00 Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine Sulikowski, James A. Morin, Michael D. Suk, Seung H. Howell, William Huntting 2003-01-01T08:00:00Z application/pdf https://scholars.unh.edu/biosci_facpub/3 https://scholars.unh.edu/context/biosci_facpub/article/1002/viewcontent/Howell_2003_ageandg.pdf unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/biosci_facpub/3 https://scholars.unh.edu/context/biosci_facpub/article/1002/viewcontent/Howell_2003_ageandg.pdf Contents of the Fishery Bulletin have not been copyrighted and may be reprinted entirely. Reference to source is appreciated. Biological Sciences Animal Sciences Marine Biology text 2003 ftuninhampshire 2024-08-02T04:50:30Z The northwest Atlantic population of thorny skates (Amblyraja radiata) inhabits an area that ranges from Greenland and Hudson Bay, Canada, to South Carolina. Despite such a wide range, very little is known about most aspects of the biology of this species. Recent stock assessment studies in the northeast United States indicate that the biomass of the thorny skate is below the threshold levels mandated by the Sustainable Fisheries Act. In order to gain insight into the life history of this skate, we estimated age and growth for thorny skates, using vertebral band counts from 224 individuals ranging in size from 29 to 105 cm total length (TL). Age bias plots and the coefficient of variation indicated that our aging method represents a nonbiased and precise approach for the age assessment of A. radiata. Marginal in -,rements were significantly differew. between months (KruskalWallis 1<0.001); a distinct trend of increasing monthly increment growth began in August. Age-at-length data were us( d to determine the von Bertalanffy growth parameters for this population: L-x = 127 cm (TL) and k=0.11 for males; L-x = 120 cm (TL) and k=(.13 for females. The oldest age estimates obtained for the thorny skate were 16 years for both males and females, which corresponded to total lengths of 103 cm and 105 cm, respectively. Text Greenland Hudson Bay Northwest Atlantic University of New Hampshire: Scholars Repository |
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Open Polar |
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University of New Hampshire: Scholars Repository |
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topic |
Animal Sciences Marine Biology |
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Animal Sciences Marine Biology Sulikowski, James A. Morin, Michael D. Suk, Seung H. Howell, William Huntting Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine |
topic_facet |
Animal Sciences Marine Biology |
description |
The northwest Atlantic population of thorny skates (Amblyraja radiata) inhabits an area that ranges from Greenland and Hudson Bay, Canada, to South Carolina. Despite such a wide range, very little is known about most aspects of the biology of this species. Recent stock assessment studies in the northeast United States indicate that the biomass of the thorny skate is below the threshold levels mandated by the Sustainable Fisheries Act. In order to gain insight into the life history of this skate, we estimated age and growth for thorny skates, using vertebral band counts from 224 individuals ranging in size from 29 to 105 cm total length (TL). Age bias plots and the coefficient of variation indicated that our aging method represents a nonbiased and precise approach for the age assessment of A. radiata. Marginal in -,rements were significantly differew. between months (KruskalWallis 1<0.001); a distinct trend of increasing monthly increment growth began in August. Age-at-length data were us( d to determine the von Bertalanffy growth parameters for this population: L-x = 127 cm (TL) and k=0.11 for males; L-x = 120 cm (TL) and k=(.13 for females. The oldest age estimates obtained for the thorny skate were 16 years for both males and females, which corresponded to total lengths of 103 cm and 105 cm, respectively. |
format |
Text |
author |
Sulikowski, James A. Morin, Michael D. Suk, Seung H. Howell, William Huntting |
author_facet |
Sulikowski, James A. Morin, Michael D. Suk, Seung H. Howell, William Huntting |
author_sort |
Sulikowski, James A. |
title |
Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine |
title_short |
Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine |
title_full |
Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine |
title_fullStr |
Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine |
title_full_unstemmed |
Age and growth estimates of the winter skate (Leucoraja ocellata) in the western Gulf of Maine |
title_sort |
age and growth estimates of the winter skate (leucoraja ocellata) in the western gulf of maine |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2003 |
url |
https://scholars.unh.edu/biosci_facpub/3 https://scholars.unh.edu/context/biosci_facpub/article/1002/viewcontent/Howell_2003_ageandg.pdf |
genre |
Greenland Hudson Bay Northwest Atlantic |
genre_facet |
Greenland Hudson Bay Northwest Atlantic |
op_source |
Biological Sciences |
op_relation |
https://scholars.unh.edu/biosci_facpub/3 https://scholars.unh.edu/context/biosci_facpub/article/1002/viewcontent/Howell_2003_ageandg.pdf |
op_rights |
Contents of the Fishery Bulletin have not been copyrighted and may be reprinted entirely. Reference to source is appreciated. |
_version_ |
1810447538593988608 |