Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland
Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Environmental Science Includes bibliographical references This study is the first assessment of non-indigenous ascidians (NIA) in Newfoundland. Field work was conducted from 2006-2007 in four harbours to assess the abundance and biodiversity...
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ftmemorialunivdc:oai:collections.mun.ca:theses4/59320 2023-05-15T17:06:05+02:00 Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland Callahan, Ashley G. Memorial University of Newfoundland. Dept. of Environmental Science 2009 x, 86 leaves : col. ill., maps Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses4/id/59320 Eng eng Electronic Theses and Dissertations (10.20 MB) -- http://collections.mun.ca/PDFs/theses/Callahan_AshleyG.pdf a3289161 http://collections.mun.ca/cdm/ref/collection/theses4/id/59320 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 Introduced aquatic organisms--Newfoundland and Labrador Sea squirts--Genetics--Newfoundland and Labrador Sea squirts--Variation--Newfoundland and Labrador Text Electronic thesis or dissertation 2009 ftmemorialunivdc 2015-08-06T19:22:05Z Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Environmental Science Includes bibliographical references This study is the first assessment of non-indigenous ascidians (NIA) in Newfoundland. Field work was conducted from 2006-2007 in four harbours to assess the abundance and biodiversity of megainvertebrates on wharf pilings, including indigenous and non-indigenous ascidians. Quadrat samples, visual surveys and photographic records were taken in each harbour. The most common species found in the survey were Mytilus spp. Two NIA were also found, Botrylloides violaceus and Botryllus schlosseri. -- Variation in cytochrome oxidase I gene of mitochondrial DNA was analyzed for these NIA, as well as for two indigenous ascidians (Boltenia echinata & Halocynthia pyriformis), in order to determine within and between species variation for future use in genetic marker design and to identify probable source populations. There was less nucleotide dissimilarity within species (≤15.6 %) than among species (17.7 - 25.8 %). The probable source populations of B. schlosseri in Newfoundland are from locations in the Northwestern Atlantic and Europe, specifically the Atlantic and Mediterranean Sea coasts of France and Spain. Thesis Labrador Sea Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Newfoundland |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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ftmemorialunivdc |
language |
English |
topic |
Introduced aquatic organisms--Newfoundland and Labrador Sea squirts--Genetics--Newfoundland and Labrador Sea squirts--Variation--Newfoundland and Labrador |
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Introduced aquatic organisms--Newfoundland and Labrador Sea squirts--Genetics--Newfoundland and Labrador Sea squirts--Variation--Newfoundland and Labrador Callahan, Ashley G. Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland |
topic_facet |
Introduced aquatic organisms--Newfoundland and Labrador Sea squirts--Genetics--Newfoundland and Labrador Sea squirts--Variation--Newfoundland and Labrador |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Environmental Science Includes bibliographical references This study is the first assessment of non-indigenous ascidians (NIA) in Newfoundland. Field work was conducted from 2006-2007 in four harbours to assess the abundance and biodiversity of megainvertebrates on wharf pilings, including indigenous and non-indigenous ascidians. Quadrat samples, visual surveys and photographic records were taken in each harbour. The most common species found in the survey were Mytilus spp. Two NIA were also found, Botrylloides violaceus and Botryllus schlosseri. -- Variation in cytochrome oxidase I gene of mitochondrial DNA was analyzed for these NIA, as well as for two indigenous ascidians (Boltenia echinata & Halocynthia pyriformis), in order to determine within and between species variation for future use in genetic marker design and to identify probable source populations. There was less nucleotide dissimilarity within species (≤15.6 %) than among species (17.7 - 25.8 %). The probable source populations of B. schlosseri in Newfoundland are from locations in the Northwestern Atlantic and Europe, specifically the Atlantic and Mediterranean Sea coasts of France and Spain. |
author2 |
Memorial University of Newfoundland. Dept. of Environmental Science |
format |
Thesis |
author |
Callahan, Ashley G. |
author_facet |
Callahan, Ashley G. |
author_sort |
Callahan, Ashley G. |
title |
Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland |
title_short |
Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland |
title_full |
Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland |
title_fullStr |
Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland |
title_full_unstemmed |
Harbour survey and genetic analysis of non-indigenous ascidian tunicates in Newfoundland |
title_sort |
harbour survey and genetic analysis of non-indigenous ascidian tunicates in newfoundland |
publishDate |
2009 |
url |
http://collections.mun.ca/cdm/ref/collection/theses4/id/59320 |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Labrador Sea Newfoundland studies University of Newfoundland |
genre_facet |
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 (10.20 MB) -- http://collections.mun.ca/PDFs/theses/Callahan_AshleyG.pdf a3289161 http://collections.mun.ca/cdm/ref/collection/theses4/id/59320 |
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_ |
1766061058732064768 |