You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour
Consistent behavioural differences among individuals is a common phenomenon that has been demonstrated for a wide range of taxonomical groups. Such behavioural differences are expected to have ecological and evolutionary implications and has therefore received an increasing amount of attention durin...
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Norwegian University of Life Sciences, Ås
2013
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Online Access: | http://hdl.handle.net/11250/187061 |
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ftunivmob:oai:nmbu.brage.unit.no:11250/187061 2024-09-15T17:55:22+00:00 You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour Bøe, Kristin 2013 application/pdf http://hdl.handle.net/11250/187061 eng eng Norwegian University of Life Sciences, Ås http://hdl.handle.net/11250/187061 50 Atlantic cod Intra-population behavioural variation VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Master thesis 2013 ftunivmob 2024-07-19T03:05:57Z Consistent behavioural differences among individuals is a common phenomenon that has been demonstrated for a wide range of taxonomical groups. Such behavioural differences are expected to have ecological and evolutionary implications and has therefore received an increasing amount of attention during the past decade. This study applies acoustic telemetry to explore intra-population variation in coastal Atlantic cod behaviour. Specifically, I explore whether consistent differences in cod (Gadus morhua) behaviour can be correlated to two a priori defined groups based on the type of gear that the individuals were caught with prior to tagging. The aim was to elucidate potential selectivity bias of fishing gear with respect to behavioural types. This was studied using acoustic telemetry within a small study area in the inner parts of Oslo fjord. A high level of among-individual variation in behaviour was identified, and the group were significantly different with respect to temperature use and how they were distributed in the water column. The contrasting use of temperatures may have implications for growth and hence life-history characteristics, which in turn have the potential to provide the basis of fisheries-induced evolution. This suggests that the inclusion of a behavioural aspect in population management could be of high relevance. Master Thesis atlantic cod Gadus morhua Open archive Norwegian University of Life Sciences: Brage NMBU |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
topic |
Atlantic cod Intra-population behavioural variation VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 |
spellingShingle |
Atlantic cod Intra-population behavioural variation VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Bøe, Kristin You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour |
topic_facet |
Atlantic cod Intra-population behavioural variation VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 |
description |
Consistent behavioural differences among individuals is a common phenomenon that has been demonstrated for a wide range of taxonomical groups. Such behavioural differences are expected to have ecological and evolutionary implications and has therefore received an increasing amount of attention during the past decade. This study applies acoustic telemetry to explore intra-population variation in coastal Atlantic cod behaviour. Specifically, I explore whether consistent differences in cod (Gadus morhua) behaviour can be correlated to two a priori defined groups based on the type of gear that the individuals were caught with prior to tagging. The aim was to elucidate potential selectivity bias of fishing gear with respect to behavioural types. This was studied using acoustic telemetry within a small study area in the inner parts of Oslo fjord. A high level of among-individual variation in behaviour was identified, and the group were significantly different with respect to temperature use and how they were distributed in the water column. The contrasting use of temperatures may have implications for growth and hence life-history characteristics, which in turn have the potential to provide the basis of fisheries-induced evolution. This suggests that the inclusion of a behavioural aspect in population management could be of high relevance. |
format |
Master Thesis |
author |
Bøe, Kristin |
author_facet |
Bøe, Kristin |
author_sort |
Bøe, Kristin |
title |
You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour |
title_short |
You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour |
title_full |
You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour |
title_fullStr |
You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour |
title_full_unstemmed |
You are what you get caught with : inter-individual variation in coastal Atlantic cod behaviour |
title_sort |
you are what you get caught with : inter-individual variation in coastal atlantic cod behaviour |
publisher |
Norwegian University of Life Sciences, Ås |
publishDate |
2013 |
url |
http://hdl.handle.net/11250/187061 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
50 |
op_relation |
http://hdl.handle.net/11250/187061 |
_version_ |
1810431669874720768 |