Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus)
European grayling (Thymallus thymallus) is a popular recreational fish that may be lifted out of the water to facilitate hook removal or for admiration. To evaluate the effects of air exposure and angling-induced exhaustive exercise on released grayling condition, we assessed blood physiology and re...
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ftunivmob:oai:nmbu.brage.unit.no:11250/2459542 2023-05-15T15:45:37+02:00 Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus) Lennox, Robert J. Mayer, Ian Havn, Torgeir Børresen Johansen, Martin R. Whoriskey, Kim Cooke, Steven J. Thorstad, Eva Bonsak Uglem, Ingebrigt 2016-04-07T14:55:42Z application/pdf http://hdl.handle.net/11250/2459542 eng eng Norges forskningsråd: 216416 Boreal environment research. 2016, 21 (5-6), 461-470. urn:issn:1239-6095 http://hdl.handle.net/11250/2459542 cristin:1349473 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 461-470 21 Boreal environment research 5-6 Journal article Peer reviewed 2016 ftunivmob 2021-09-23T20:16:35Z European grayling (Thymallus thymallus) is a popular recreational fish that may be lifted out of the water to facilitate hook removal or for admiration. To evaluate the effects of air exposure and angling-induced exhaustive exercise on released grayling condition, we assessed blood physiology and reflexes of grayling after angling and air exposure in the subarctic River Lakselva (Norway) at midsummer temperatures (i.e., 17–18 °C). Blood samples were drawn 30 min after angling and analyzed for lactate anions, glucose, sodium ions, and pH. Reflex impairment was determined with orientation and tail grab reflex action assessments immediately after landing, after air exposure, and after 30 min holding. Blood physiology did not indicate an exacerbating effect of air exposure relative to just angling-induced exercise, but significant and prolonged reflex impairment was associated with the 120 s air exposure interval. Anglers must take care to minimize air exposure to adhere to best handling practices. publishedVersion Article in Journal/Newspaper Boreal Environment Research Subarctic Open archive Norwegian University of Life Sciences: Brage NMBU Norway Lakselva ENVELOPE(20.165,20.165,69.580,69.580) |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
description |
European grayling (Thymallus thymallus) is a popular recreational fish that may be lifted out of the water to facilitate hook removal or for admiration. To evaluate the effects of air exposure and angling-induced exhaustive exercise on released grayling condition, we assessed blood physiology and reflexes of grayling after angling and air exposure in the subarctic River Lakselva (Norway) at midsummer temperatures (i.e., 17–18 °C). Blood samples were drawn 30 min after angling and analyzed for lactate anions, glucose, sodium ions, and pH. Reflex impairment was determined with orientation and tail grab reflex action assessments immediately after landing, after air exposure, and after 30 min holding. Blood physiology did not indicate an exacerbating effect of air exposure relative to just angling-induced exercise, but significant and prolonged reflex impairment was associated with the 120 s air exposure interval. Anglers must take care to minimize air exposure to adhere to best handling practices. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Lennox, Robert J. Mayer, Ian Havn, Torgeir Børresen Johansen, Martin R. Whoriskey, Kim Cooke, Steven J. Thorstad, Eva Bonsak Uglem, Ingebrigt |
spellingShingle |
Lennox, Robert J. Mayer, Ian Havn, Torgeir Børresen Johansen, Martin R. Whoriskey, Kim Cooke, Steven J. Thorstad, Eva Bonsak Uglem, Ingebrigt Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus) |
author_facet |
Lennox, Robert J. Mayer, Ian Havn, Torgeir Børresen Johansen, Martin R. Whoriskey, Kim Cooke, Steven J. Thorstad, Eva Bonsak Uglem, Ingebrigt |
author_sort |
Lennox, Robert J. |
title |
Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus) |
title_short |
Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus) |
title_full |
Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus) |
title_fullStr |
Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus) |
title_full_unstemmed |
Effects of recreational angling and air exposure on the physiological status and reflex impairment of European grayling (Thymallus thymallus) |
title_sort |
effects of recreational angling and air exposure on the physiological status and reflex impairment of european grayling (thymallus thymallus) |
publishDate |
2016 |
url |
http://hdl.handle.net/11250/2459542 |
long_lat |
ENVELOPE(20.165,20.165,69.580,69.580) |
geographic |
Norway Lakselva |
geographic_facet |
Norway Lakselva |
genre |
Boreal Environment Research Subarctic |
genre_facet |
Boreal Environment Research Subarctic |
op_source |
461-470 21 Boreal environment research 5-6 |
op_relation |
Norges forskningsråd: 216416 Boreal environment research. 2016, 21 (5-6), 461-470. urn:issn:1239-6095 http://hdl.handle.net/11250/2459542 cristin:1349473 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766380038681264128 |