Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region
Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Biology Includes bibliographical references (leaves 3.26-3.38) The biological traits of the sea cucumber Cucumaria frondosa relevant from both ecological and resource management perspectives were investigated; including distribution, growth...
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ftmemorialunivdc:oai:collections.mun.ca:theses4/43611 2023-05-15T15:59:37+02:00 Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region So, Justin James. Memorial University of Newfoundland. Dept. of Biology Canada--Newfoundland and Labrador; 2009 1 v. (various foliations) : ill., maps (chiefly col.) Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses4/id/43611 Eng eng Electronic Theses and Dissertations (20.86 MB) -- http://collections.mun.ca/PDFs/theses/So_JustinJ.pdf a3243839 http://collections.mun.ca/cdm/ref/collection/theses4/id/43611 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 Fishery management--Newfoundland and Labrador Sea cucumbers--Ecology--Newfoundland and Labrador Sea cucumbers--Newfoundland and Labrador--Genetics Trepang fisheries--Newfoundland and Labrador Text Electronic thesis or dissertation 2009 ftmemorialunivdc 2015-08-06T19:21:57Z Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Biology Includes bibliographical references (leaves 3.26-3.38) The biological traits of the sea cucumber Cucumaria frondosa relevant from both ecological and resource management perspectives were investigated; including distribution, growth and predation on juveniles and adults, and population genetics. Natural densities were mainly dependent on substrate type and location. Spawning occurred from March to May in response to increasing phytoplankton abundance and larvae settled in ca. 5 weeks. Growth of juveniles and adults was slow (indicating ca. 25 years to reach market size) with seasonal patterns correlated with food supply. Juveniles of S. endeca fed upon post-metamorphic sea cucumbers, whereas adult feeding rates were modulated by temperature and biased towards small and injured sea cucumbers, suggesting that trawling may exacerbate predation pressure. Population genetic parameters are consistent with persistence in refugia through the last glacial maximum and local genetic patchiness is likely due to variations in recruitment. A precautionary management approach is advisable to ensure the sustainability of the fishery. Thesis Cucumaria frondosa Labrador region Labrador Sea Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Newfoundland Canada |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Fishery management--Newfoundland and Labrador Sea cucumbers--Ecology--Newfoundland and Labrador Sea cucumbers--Newfoundland and Labrador--Genetics Trepang fisheries--Newfoundland and Labrador |
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Fishery management--Newfoundland and Labrador Sea cucumbers--Ecology--Newfoundland and Labrador Sea cucumbers--Newfoundland and Labrador--Genetics Trepang fisheries--Newfoundland and Labrador So, Justin James. Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region |
topic_facet |
Fishery management--Newfoundland and Labrador Sea cucumbers--Ecology--Newfoundland and Labrador Sea cucumbers--Newfoundland and Labrador--Genetics Trepang fisheries--Newfoundland and Labrador |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Biology Includes bibliographical references (leaves 3.26-3.38) The biological traits of the sea cucumber Cucumaria frondosa relevant from both ecological and resource management perspectives were investigated; including distribution, growth and predation on juveniles and adults, and population genetics. Natural densities were mainly dependent on substrate type and location. Spawning occurred from March to May in response to increasing phytoplankton abundance and larvae settled in ca. 5 weeks. Growth of juveniles and adults was slow (indicating ca. 25 years to reach market size) with seasonal patterns correlated with food supply. Juveniles of S. endeca fed upon post-metamorphic sea cucumbers, whereas adult feeding rates were modulated by temperature and biased towards small and injured sea cucumbers, suggesting that trawling may exacerbate predation pressure. Population genetic parameters are consistent with persistence in refugia through the last glacial maximum and local genetic patchiness is likely due to variations in recruitment. A precautionary management approach is advisable to ensure the sustainability of the fishery. |
author2 |
Memorial University of Newfoundland. Dept. of Biology |
format |
Thesis |
author |
So, Justin James. |
author_facet |
So, Justin James. |
author_sort |
So, Justin James. |
title |
Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region |
title_short |
Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region |
title_full |
Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region |
title_fullStr |
Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region |
title_full_unstemmed |
Assessment of the biology, ecology and genetic structure of the sea cucumber Cucumaria frondosa for management of the fishery in the Newfoundland and Labrador region |
title_sort |
assessment of the biology, ecology and genetic structure of the sea cucumber cucumaria frondosa for management of the fishery in the newfoundland and labrador region |
publishDate |
2009 |
url |
http://collections.mun.ca/cdm/ref/collection/theses4/id/43611 |
op_coverage |
Canada--Newfoundland and Labrador; |
geographic |
Newfoundland Canada |
geographic_facet |
Newfoundland Canada |
genre |
Cucumaria frondosa Labrador region Labrador Sea Newfoundland studies University of Newfoundland |
genre_facet |
Cucumaria frondosa Labrador region Labrador Sea 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 (20.86 MB) -- http://collections.mun.ca/PDFs/theses/So_JustinJ.pdf a3243839 http://collections.mun.ca/cdm/ref/collection/theses4/id/43611 |
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_ |
1766395556371890176 |