Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers
Marine recreational and commercial exploitation of salmonids often target a mixed stock consisting of genetically distinct and independent populations with varying abundances, life histories, standing genetic variation, and conservation status. In this study we use SNP markers to investigate the gen...
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UiT Norges arktiske universitet
2019
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Online Access: | https://hdl.handle.net/10037/16940 |
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ftunivtroemsoe:oai:munin.uit.no:10037/16940 2023-05-15T17:43:32+02:00 Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers Schmidt, Simon Nordblad 2019-11-15 https://hdl.handle.net/10037/16940 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway https://hdl.handle.net/10037/16940 openAccess Copyright 2019 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 BIO-3950 Master thesis Mastergradsoppgave 2019 ftunivtroemsoe 2021-06-25T17:57:01Z Marine recreational and commercial exploitation of salmonids often target a mixed stock consisting of genetically distinct and independent populations with varying abundances, life histories, standing genetic variation, and conservation status. In this study we use SNP markers to investigate the genetic population structure of juvenile brown trout (Salmo trutta L.) from five distinct watercourses in order to identify the contribution of different source populations in a mixed stock fishery on sea-run brown trout. We identify significant genetic population structure between the watercourses, even between those with little geographical separation. While the Saltdal watercourse in recent years has seen a decline in brown trout catchments, we discover that it is the main contributor to the mixed stock; supplying 63% of sea-run brown trout longer than 50 cm and 76% longer than 70 cm. Sea-run brown trout shorter than 50 cm mainly exhibited genetic patters dissimilar to those of our reference populations. For a holistic view of the sea-run brown trout fisheries and to obtain a better understanding of the dynamics of the fjord system, further research is therefore warranted. Master Thesis Northern Norway Saltdal University of Tromsø: Munin Open Research Archive Norway Saltdal ENVELOPE(15.317,15.317,66.983,66.983) |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 BIO-3950 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 BIO-3950 Schmidt, Simon Nordblad Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 BIO-3950 |
description |
Marine recreational and commercial exploitation of salmonids often target a mixed stock consisting of genetically distinct and independent populations with varying abundances, life histories, standing genetic variation, and conservation status. In this study we use SNP markers to investigate the genetic population structure of juvenile brown trout (Salmo trutta L.) from five distinct watercourses in order to identify the contribution of different source populations in a mixed stock fishery on sea-run brown trout. We identify significant genetic population structure between the watercourses, even between those with little geographical separation. While the Saltdal watercourse in recent years has seen a decline in brown trout catchments, we discover that it is the main contributor to the mixed stock; supplying 63% of sea-run brown trout longer than 50 cm and 76% longer than 70 cm. Sea-run brown trout shorter than 50 cm mainly exhibited genetic patters dissimilar to those of our reference populations. For a holistic view of the sea-run brown trout fisheries and to obtain a better understanding of the dynamics of the fjord system, further research is therefore warranted. |
format |
Master Thesis |
author |
Schmidt, Simon Nordblad |
author_facet |
Schmidt, Simon Nordblad |
author_sort |
Schmidt, Simon Nordblad |
title |
Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers |
title_short |
Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers |
title_full |
Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers |
title_fullStr |
Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers |
title_full_unstemmed |
Recreational fisheries target declining populations of brown trout (Salmo trutta L.) in Northern Norway as revealed by a genome wide array of SNP markers |
title_sort |
recreational fisheries target declining populations of brown trout (salmo trutta l.) in northern norway as revealed by a genome wide array of snp markers |
publisher |
UiT Norges arktiske universitet |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/16940 |
long_lat |
ENVELOPE(15.317,15.317,66.983,66.983) |
geographic |
Norway Saltdal |
geographic_facet |
Norway Saltdal |
genre |
Northern Norway Saltdal |
genre_facet |
Northern Norway Saltdal |
op_relation |
https://hdl.handle.net/10037/16940 |
op_rights |
openAccess Copyright 2019 The Author(s) |
_version_ |
1766145623312039936 |