Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua)
A ssur ing the v itality and survival potential of live-caught Atlantic cod (Gadus morhua) is important for improving the sorting of fish before net penning operationsdesigned to hold fish for growth and later market. When Atlantic cod are captured by Danish seine, the most commonly used fishing gea...
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ftoceandocs:oai:aquadocs.org:1834/25444 2023-05-15T15:26:20+02:00 Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua) Humborstad, Odd-Borre Davis, Michael W. Løkkeborg, Svein 2009 application/pdf 395-402 http://hdl.handle.net/1834/25444 en eng http://fishbull.noaa.gov/1073/humborstad.pdf 0090-0656 http://hdl.handle.net/1834/25444 http://aquaticcommons.org/id/eprint/8795 403 2012-06-11 18:30:29 8795 United States National Marine Fisheries Service Biology Ecology Fisheries article TRUE 2009 ftoceandocs 2023-04-06T17:02:54Z A ssur ing the v itality and survival potential of live-caught Atlantic cod (Gadus morhua) is important for improving the sorting of fish before net penning operationsdesigned to hold fish for growth and later market. When Atlantic cod are captured by Danish seine, the most commonly used fishing gear for live-caught fish, they undergo stressors such as forced swimming, net abrasion,and air exposure. Laboratory experiments (at an air temperature of 9°C and water temperature of 8°C) were conducted with the aim of constructing a RAMP (reflex actionmortality predictor) curve for prediction of vitality and survival potential in Atlantic cod captured in Danishseines, by varying the levels of these stressors. Atlantic cod exposed to increased duration in air (5–20 min) showed increased reflex impairment and mortality, with 75% mortality at 10 minutes of air exposure. Forced swimming in combination with net abrasion and air exposure did notincrease reflex impairment or mortality above that associated with air exposure alone. The Atlantic cod RAMP curves indicated that fish with reflex impairment less than 50% would not show mortality and would likely recover from capture stress. Article in Journal/Newspaper atlantic cod Gadus morhua IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Humborstad, Odd-Borre Davis, Michael W. Løkkeborg, Svein Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua) |
topic_facet |
Biology Ecology Fisheries |
description |
A ssur ing the v itality and survival potential of live-caught Atlantic cod (Gadus morhua) is important for improving the sorting of fish before net penning operationsdesigned to hold fish for growth and later market. When Atlantic cod are captured by Danish seine, the most commonly used fishing gear for live-caught fish, they undergo stressors such as forced swimming, net abrasion,and air exposure. Laboratory experiments (at an air temperature of 9°C and water temperature of 8°C) were conducted with the aim of constructing a RAMP (reflex actionmortality predictor) curve for prediction of vitality and survival potential in Atlantic cod captured in Danishseines, by varying the levels of these stressors. Atlantic cod exposed to increased duration in air (5–20 min) showed increased reflex impairment and mortality, with 75% mortality at 10 minutes of air exposure. Forced swimming in combination with net abrasion and air exposure did notincrease reflex impairment or mortality above that associated with air exposure alone. The Atlantic cod RAMP curves indicated that fish with reflex impairment less than 50% would not show mortality and would likely recover from capture stress. |
format |
Article in Journal/Newspaper |
author |
Humborstad, Odd-Borre Davis, Michael W. Løkkeborg, Svein |
author_facet |
Humborstad, Odd-Borre Davis, Michael W. Løkkeborg, Svein |
author_sort |
Humborstad, Odd-Borre |
title |
Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua) |
title_short |
Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua) |
title_full |
Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua) |
title_fullStr |
Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua) |
title_full_unstemmed |
Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua) |
title_sort |
reflex impairment as a measure of vitality and survival potential of atlantic cod (gadus morhua) |
publishDate |
2009 |
url |
http://hdl.handle.net/1834/25444 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
http://aquaticcommons.org/id/eprint/8795 403 2012-06-11 18:30:29 8795 United States National Marine Fisheries Service |
op_relation |
http://fishbull.noaa.gov/1073/humborstad.pdf 0090-0656 http://hdl.handle.net/1834/25444 |
_version_ |
1766356835211673600 |