The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area
Various aspects of the biology of the Greenland halibut stock in the Newfoundland-Labrador area were investigated. The distribution of Greenland halibut in relation to depth and temperature is described for several areas. The largest concentrations were found to be in depths of 150 and 325 fathoms a...
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Memorial University of Newfoundland
1970
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Online Access: | https://research.library.mun.ca/7244/ https://research.library.mun.ca/7244/1/Lear_WilliamHenry.pdf https://research.library.mun.ca/7244/3/Lear_WilliamHenry.pdf |
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ftmemorialuniv:oai:research.library.mun.ca:7244 2023-10-01T03:56:12+02:00 The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area Lear, W. H. (William Henry) 1970 application/pdf https://research.library.mun.ca/7244/ https://research.library.mun.ca/7244/1/Lear_WilliamHenry.pdf https://research.library.mun.ca/7244/3/Lear_WilliamHenry.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/7244/1/Lear_WilliamHenry.pdf https://research.library.mun.ca/7244/3/Lear_WilliamHenry.pdf Lear, W. H. (William Henry) <https://research.library.mun.ca/view/creator_az/Lear=3AW=2E_H=2E_=28William_Henry=29=3A=3A.html> (1970) The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area. Masters thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 1970 ftmemorialuniv 2023-09-03T06:46:16Z Various aspects of the biology of the Greenland halibut stock in the Newfoundland-Labrador area were investigated. The distribution of Greenland halibut in relation to depth and temperature is described for several areas. The largest concentrations were found to be in depths of 150 and 325 fathoms and temperatures from 1° to 3°C. -- The food of Greenland halibut is discussed in relation to half-monthly periods, depth and fish length. Capelin is the major food of Greenland halibut larger than 20 cm with euphausiids being the major food below 20 cm. -- The age and growth patterns, and length-weight relationships for several areas are described as well as evidence supporting the validity of the otolith ageing technique. The growth rate of Greenland halibut decreases from south to north possibly because of the cold Labrador Current in the northern areas. The growth rate of Greenland halibut in Trinity Bay has increased since 1953 possibly because of an increase in temperature in this area and also because of a decrease in numbers resulting from the high fishing intensity in Trinity Bay during 1964-68. -- Estimates of total and annual mortality rates are calculated for each area under consideration. Sufficient time had not elapsed since the increase in effort in Trinity Bay for the expected increase in total mortality to be reflected in the catch curves at the time of sampling. Thesis Greenland Newfoundland Memorial University of Newfoundland: Research Repository Newfoundland Greenland |
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English |
description |
Various aspects of the biology of the Greenland halibut stock in the Newfoundland-Labrador area were investigated. The distribution of Greenland halibut in relation to depth and temperature is described for several areas. The largest concentrations were found to be in depths of 150 and 325 fathoms and temperatures from 1° to 3°C. -- The food of Greenland halibut is discussed in relation to half-monthly periods, depth and fish length. Capelin is the major food of Greenland halibut larger than 20 cm with euphausiids being the major food below 20 cm. -- The age and growth patterns, and length-weight relationships for several areas are described as well as evidence supporting the validity of the otolith ageing technique. The growth rate of Greenland halibut decreases from south to north possibly because of the cold Labrador Current in the northern areas. The growth rate of Greenland halibut in Trinity Bay has increased since 1953 possibly because of an increase in temperature in this area and also because of a decrease in numbers resulting from the high fishing intensity in Trinity Bay during 1964-68. -- Estimates of total and annual mortality rates are calculated for each area under consideration. Sufficient time had not elapsed since the increase in effort in Trinity Bay for the expected increase in total mortality to be reflected in the catch curves at the time of sampling. |
format |
Thesis |
author |
Lear, W. H. (William Henry) |
spellingShingle |
Lear, W. H. (William Henry) The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area |
author_facet |
Lear, W. H. (William Henry) |
author_sort |
Lear, W. H. (William Henry) |
title |
The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area |
title_short |
The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area |
title_full |
The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area |
title_fullStr |
The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area |
title_full_unstemmed |
The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area |
title_sort |
biology and fishery of the greenland halibut (reinhardtius hippoglossoides (walbaum)) in the newfoundland area |
publisher |
Memorial University of Newfoundland |
publishDate |
1970 |
url |
https://research.library.mun.ca/7244/ https://research.library.mun.ca/7244/1/Lear_WilliamHenry.pdf https://research.library.mun.ca/7244/3/Lear_WilliamHenry.pdf |
geographic |
Newfoundland Greenland |
geographic_facet |
Newfoundland Greenland |
genre |
Greenland Newfoundland |
genre_facet |
Greenland Newfoundland |
op_relation |
https://research.library.mun.ca/7244/1/Lear_WilliamHenry.pdf https://research.library.mun.ca/7244/3/Lear_WilliamHenry.pdf Lear, W. H. (William Henry) <https://research.library.mun.ca/view/creator_az/Lear=3AW=2E_H=2E_=28William_Henry=29=3A=3A.html> (1970) The biology and fishery of the Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Newfoundland area. Masters thesis, Memorial University of Newfoundland. |
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thesis_license |
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1778525509250973696 |