Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus )
Understanding migratory behavior, mortality, and physiology is essential for conservation of many species, particularly anadromous fish. In this study, freshwater and marine migrations of the endangered salmonid North Sea houting (Coregonus oxyrinchus (Linnaeus, 1758)) were investigated using teleme...
Published in: | Canadian Journal of Zoology |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | https://pure.au.dk/portal/da/publications/investigating-fish-migration-mortality-and-physiology-to-improve-conservation-planning-of-anadromous-salmonids(dc857b1f-3c91-4728-b309-f9c71b08271d).html https://doi.org/10.1139/cjz-2019-0045 |
id |
ftuniaarhuspubl:oai:pure.atira.dk:publications/dc857b1f-3c91-4728-b309-f9c71b08271d |
---|---|
record_format |
openpolar |
spelling |
ftuniaarhuspubl:oai:pure.atira.dk:publications/dc857b1f-3c91-4728-b309-f9c71b08271d 2023-05-15T15:32:43+02:00 Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) Hertz, Morten Jensen, Lasse Fast Pertoldi, Cino Aarestrup, Kim Thomsen, Søren N. Alstrup, Aage Kristian Olsen Asmus, H. Madsen, S.S. Svendsen, Jon Christian 2019-12 https://pure.au.dk/portal/da/publications/investigating-fish-migration-mortality-and-physiology-to-improve-conservation-planning-of-anadromous-salmonids(dc857b1f-3c91-4728-b309-f9c71b08271d).html https://doi.org/10.1139/cjz-2019-0045 eng eng info:eu-repo/semantics/restrictedAccess Hertz , M , Jensen , L F , Pertoldi , C , Aarestrup , K , Thomsen , S N , Alstrup , A K O , Asmus , H , Madsen , S S & Svendsen , J C 2019 , ' Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids : a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) ' , Canadian Journal of Zoology , vol. 97 , no. 12 , pp. 1126-1136 . https://doi.org/10.1139/cjz-2019-0045 Acoustic telemetry Bern Convention Coregonus oxyrinchus Fish Habitat Directive of the European Union Na /K ATPase North Sea houting Osmolality Repeatability Spawning migration SALAR SMOLTS ADULT ATLANTIC SALMON BROWN TROUT FRESH-WATER NA+-K+-ATPASE L. SPECIES COMPLEX TRUTTA SMOLTS LAVARETUS L. Na+/K+ ATPase NA+,K+-ATPASE ACTIVITY article 2019 ftuniaarhuspubl https://doi.org/10.1139/cjz-2019-0045 2022-11-16T23:53:57Z Understanding migratory behavior, mortality, and physiology is essential for conservation of many species, particularly anadromous fish. In this study, freshwater and marine migrations of the endangered salmonid North Sea houting (Coregonus oxyrinchus (Linnaeus, 1758)) were investigated using telemetry. Furthermore, physiological samples were collected from North Sea houting and from resident and anadromous populations of the closely related European whitefish (Coregonus lavaretus (Linnaeus, 1758)) to compare hypo-osmotic tolerances. On average, North Sea houting spent 193 days at sea where the mortality was 36%. Most fish returned from sea in the autumn, and river entry correlated inversely with river temperature and positively with discharge. Fish spent an average of 49 days in the estuarine area. Artificial lakes negatively affected migration speeds. Migration speeds did not differ consistently between individuals (i.e., not a repeatable trait) but correlated positively with water temperature. Fish arrived at spawning areas in November. In the post-spawning state, Na + /K + -ATPase activities were elevated in North Sea houting and anadromous whitefish compared with resident whitefish, while osmolality was elevated only in North Sea houting. Our study provides important information for conservation planning related to the Habitat Directive of the European Union that lists the North Sea houting as critically endangered. Article in Journal/Newspaper Atlantic salmon Aarhus University: Research Canadian Journal of Zoology 97 12 1126 1136 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Acoustic telemetry Bern Convention Coregonus oxyrinchus Fish Habitat Directive of the European Union Na /K ATPase North Sea houting Osmolality Repeatability Spawning migration SALAR SMOLTS ADULT ATLANTIC SALMON BROWN TROUT FRESH-WATER NA+-K+-ATPASE L. SPECIES COMPLEX TRUTTA SMOLTS LAVARETUS L. Na+/K+ ATPase NA+,K+-ATPASE ACTIVITY |
spellingShingle |
Acoustic telemetry Bern Convention Coregonus oxyrinchus Fish Habitat Directive of the European Union Na /K ATPase North Sea houting Osmolality Repeatability Spawning migration SALAR SMOLTS ADULT ATLANTIC SALMON BROWN TROUT FRESH-WATER NA+-K+-ATPASE L. SPECIES COMPLEX TRUTTA SMOLTS LAVARETUS L. Na+/K+ ATPase NA+,K+-ATPASE ACTIVITY Hertz, Morten Jensen, Lasse Fast Pertoldi, Cino Aarestrup, Kim Thomsen, Søren N. Alstrup, Aage Kristian Olsen Asmus, H. Madsen, S.S. Svendsen, Jon Christian Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) |
topic_facet |
Acoustic telemetry Bern Convention Coregonus oxyrinchus Fish Habitat Directive of the European Union Na /K ATPase North Sea houting Osmolality Repeatability Spawning migration SALAR SMOLTS ADULT ATLANTIC SALMON BROWN TROUT FRESH-WATER NA+-K+-ATPASE L. SPECIES COMPLEX TRUTTA SMOLTS LAVARETUS L. Na+/K+ ATPase NA+,K+-ATPASE ACTIVITY |
description |
Understanding migratory behavior, mortality, and physiology is essential for conservation of many species, particularly anadromous fish. In this study, freshwater and marine migrations of the endangered salmonid North Sea houting (Coregonus oxyrinchus (Linnaeus, 1758)) were investigated using telemetry. Furthermore, physiological samples were collected from North Sea houting and from resident and anadromous populations of the closely related European whitefish (Coregonus lavaretus (Linnaeus, 1758)) to compare hypo-osmotic tolerances. On average, North Sea houting spent 193 days at sea where the mortality was 36%. Most fish returned from sea in the autumn, and river entry correlated inversely with river temperature and positively with discharge. Fish spent an average of 49 days in the estuarine area. Artificial lakes negatively affected migration speeds. Migration speeds did not differ consistently between individuals (i.e., not a repeatable trait) but correlated positively with water temperature. Fish arrived at spawning areas in November. In the post-spawning state, Na + /K + -ATPase activities were elevated in North Sea houting and anadromous whitefish compared with resident whitefish, while osmolality was elevated only in North Sea houting. Our study provides important information for conservation planning related to the Habitat Directive of the European Union that lists the North Sea houting as critically endangered. |
format |
Article in Journal/Newspaper |
author |
Hertz, Morten Jensen, Lasse Fast Pertoldi, Cino Aarestrup, Kim Thomsen, Søren N. Alstrup, Aage Kristian Olsen Asmus, H. Madsen, S.S. Svendsen, Jon Christian |
author_facet |
Hertz, Morten Jensen, Lasse Fast Pertoldi, Cino Aarestrup, Kim Thomsen, Søren N. Alstrup, Aage Kristian Olsen Asmus, H. Madsen, S.S. Svendsen, Jon Christian |
author_sort |
Hertz, Morten |
title |
Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) |
title_short |
Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) |
title_full |
Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) |
title_fullStr |
Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) |
title_full_unstemmed |
Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) |
title_sort |
investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids:a case study on the endangered north sea houting ( coregonus oxyrinchus ) |
publishDate |
2019 |
url |
https://pure.au.dk/portal/da/publications/investigating-fish-migration-mortality-and-physiology-to-improve-conservation-planning-of-anadromous-salmonids(dc857b1f-3c91-4728-b309-f9c71b08271d).html https://doi.org/10.1139/cjz-2019-0045 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Hertz , M , Jensen , L F , Pertoldi , C , Aarestrup , K , Thomsen , S N , Alstrup , A K O , Asmus , H , Madsen , S S & Svendsen , J C 2019 , ' Investigating fish migration, mortality and physiology to improve conservation planning of anadromous salmonids : a case study on the endangered North Sea houting ( Coregonus oxyrinchus ) ' , Canadian Journal of Zoology , vol. 97 , no. 12 , pp. 1126-1136 . https://doi.org/10.1139/cjz-2019-0045 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1139/cjz-2019-0045 |
container_title |
Canadian Journal of Zoology |
container_volume |
97 |
container_issue |
12 |
container_start_page |
1126 |
op_container_end_page |
1136 |
_version_ |
1766363201977450496 |