Population dynamics and biological characteristics of the Newfoundland west coast herring stock
Thesis (M.Sc.)--Memorial University of Newfoundland, 1980. Biology Bibliography: leaves 78-82. Atlantic herring (Clupea harengus harengus L.) occurring along the west coast of Newfoundland were examined. Based on tagging results and spacing type (spring-spawners and autumn-spawners) composition a fi...
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ftmemorialunivdc:oai:collections.mun.ca:theses2/38834 2023-05-15T17:23:30+02:00 Population dynamics and biological characteristics of the Newfoundland west coast herring stock Moores, John A., 1951- Memorial University of Newfoundland. Dept. of Biology Canada--Newfoundland and Labrador 1980 ix, 82 leaves : ill., maps Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/38834 Eng eng Electronic Theses and Dissertations (15.00 MB) -- http://collections.mun.ca/PDFs/theses/Moores_JohnA.pdf 75145600 http://collections.mun.ca/cdm/ref/collection/theses2/id/38834 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Atlantic herring fisheries--Newfoundland and Labrador Fish populations--Newfoundland and Labrador Text Electronic thesis or dissertation 1980 ftmemorialunivdc 2015-08-06T19:16:35Z Thesis (M.Sc.)--Memorial University of Newfoundland, 1980. Biology Bibliography: leaves 78-82. Atlantic herring (Clupea harengus harengus L.) occurring along the west coast of Newfoundland were examined. Based on tagging results and spacing type (spring-spawners and autumn-spawners) composition a fisheries management unit encompassing the area from Cape Anguille to Cape Norman was proposed. Several spawning areas have been identified in this area indicating that there are several herring populations in the area such that the fishery exploits a stock-complex. Several biological characteristics including maturity rate, growth and feeding were examined. A comparison of growth rates from samples taken at two spawning sites and from the fall fishery did not indicate any differences and the populations were, therefore, treated as a unit stock for an analysis of its population dynamics. These analyses indicate that recruitment in recent years has generally been poor particularly among autumn-spawners which have steadily declined in abundance during the period covered by the analysis (1966-78). Recruitment to the spring-spawning component has been poor with the exception of the exceptionally strong 1968 year-class and the moderately strong 1974 year-class., However, no stock and recruit relationship could be established. In terms of F0-1 management strategy the stock is currently under exploited. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Canada Cape Norman ENVELOPE(-55.898,-55.898,51.617,51.617) Newfoundland |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Atlantic herring fisheries--Newfoundland and Labrador Fish populations--Newfoundland and Labrador |
spellingShingle |
Atlantic herring fisheries--Newfoundland and Labrador Fish populations--Newfoundland and Labrador Moores, John A., 1951- Population dynamics and biological characteristics of the Newfoundland west coast herring stock |
topic_facet |
Atlantic herring fisheries--Newfoundland and Labrador Fish populations--Newfoundland and Labrador |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 1980. Biology Bibliography: leaves 78-82. Atlantic herring (Clupea harengus harengus L.) occurring along the west coast of Newfoundland were examined. Based on tagging results and spacing type (spring-spawners and autumn-spawners) composition a fisheries management unit encompassing the area from Cape Anguille to Cape Norman was proposed. Several spawning areas have been identified in this area indicating that there are several herring populations in the area such that the fishery exploits a stock-complex. Several biological characteristics including maturity rate, growth and feeding were examined. A comparison of growth rates from samples taken at two spawning sites and from the fall fishery did not indicate any differences and the populations were, therefore, treated as a unit stock for an analysis of its population dynamics. These analyses indicate that recruitment in recent years has generally been poor particularly among autumn-spawners which have steadily declined in abundance during the period covered by the analysis (1966-78). Recruitment to the spring-spawning component has been poor with the exception of the exceptionally strong 1968 year-class and the moderately strong 1974 year-class., However, no stock and recruit relationship could be established. In terms of F0-1 management strategy the stock is currently under exploited. |
author2 |
Memorial University of Newfoundland. Dept. of Biology |
format |
Thesis |
author |
Moores, John A., 1951- |
author_facet |
Moores, John A., 1951- |
author_sort |
Moores, John A., 1951- |
title |
Population dynamics and biological characteristics of the Newfoundland west coast herring stock |
title_short |
Population dynamics and biological characteristics of the Newfoundland west coast herring stock |
title_full |
Population dynamics and biological characteristics of the Newfoundland west coast herring stock |
title_fullStr |
Population dynamics and biological characteristics of the Newfoundland west coast herring stock |
title_full_unstemmed |
Population dynamics and biological characteristics of the Newfoundland west coast herring stock |
title_sort |
population dynamics and biological characteristics of the newfoundland west coast herring stock |
publishDate |
1980 |
url |
http://collections.mun.ca/cdm/ref/collection/theses2/id/38834 |
op_coverage |
Canada--Newfoundland and Labrador |
long_lat |
ENVELOPE(-55.898,-55.898,51.617,51.617) |
geographic |
Canada Cape Norman Newfoundland |
geographic_facet |
Canada Cape Norman Newfoundland |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (15.00 MB) -- http://collections.mun.ca/PDFs/theses/Moores_JohnA.pdf 75145600 http://collections.mun.ca/cdm/ref/collection/theses2/id/38834 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
_version_ |
1766112809183084544 |