Aggresive behavior of two size classes of four salmonid species
Groups of eight parr of hatchery reared Atlantic salmon (Salmo salar), sea trout (Salmo trutta), rainbow trout (Oncorhynchus mykiss) and Arctic charr (Salvelinus alpinus) were investigated in monoculture with two size groups of fish. Aggression was assessed by recording seven behavioural patterns: A...
Main Author: | |
---|---|
Format: | Report |
Language: | Norwegian Bokmål |
Published: |
Havforskningsinstituttet
1995
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/113483 |
id |
ftimr:oai:imr.brage.unit.no:11250/113483 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/113483 2024-09-15T17:52:22+00:00 Aggresive behavior of two size classes of four salmonid species Mork, Odd Ivar 1995 446907 bytes application/pdf http://hdl.handle.net/11250/113483 nob nob Havforskningsinstituttet Fisken og havet Nr.19 - 1995 urn:issn:0071-5638 http://hdl.handle.net/11250/113483 11 s. laksefisker salmonids aggressiv atferd aggressive behaviour Research report 1995 ftimr 2024-07-31T03:37:25Z Groups of eight parr of hatchery reared Atlantic salmon (Salmo salar), sea trout (Salmo trutta), rainbow trout (Oncorhynchus mykiss) and Arctic charr (Salvelinus alpinus) were investigated in monoculture with two size groups of fish. Aggression was assessed by recording seven behavioural patterns: Approach and body-bending, lateral display, charge, chase, bite, frontal display, and fight. Aggression between fish of different size showed one step in a hierarchy where larger fish were most aggressive in all species. Most aggression occurred between fish of similar size. Atlantic salmon most frequently showed charge, bites and intention movements. Sea trout showed most of intention movements and frontal display. Rainbow trout performed charge and bite most frequently, and intention movements and chasing secondly. Body-bending was typically performed by rainbow trout, and this pattern was often intentionnally showed in advance of charge. Arctic charr performed charge, bite and chase at a similar frequency. Report Arctic charr Atlantic salmon Salmo salar Salvelinus alpinus Institute for Marine Research: Brage IMR |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
Norwegian Bokmål |
topic |
laksefisker salmonids aggressiv atferd aggressive behaviour |
spellingShingle |
laksefisker salmonids aggressiv atferd aggressive behaviour Mork, Odd Ivar Aggresive behavior of two size classes of four salmonid species |
topic_facet |
laksefisker salmonids aggressiv atferd aggressive behaviour |
description |
Groups of eight parr of hatchery reared Atlantic salmon (Salmo salar), sea trout (Salmo trutta), rainbow trout (Oncorhynchus mykiss) and Arctic charr (Salvelinus alpinus) were investigated in monoculture with two size groups of fish. Aggression was assessed by recording seven behavioural patterns: Approach and body-bending, lateral display, charge, chase, bite, frontal display, and fight. Aggression between fish of different size showed one step in a hierarchy where larger fish were most aggressive in all species. Most aggression occurred between fish of similar size. Atlantic salmon most frequently showed charge, bites and intention movements. Sea trout showed most of intention movements and frontal display. Rainbow trout performed charge and bite most frequently, and intention movements and chasing secondly. Body-bending was typically performed by rainbow trout, and this pattern was often intentionnally showed in advance of charge. Arctic charr performed charge, bite and chase at a similar frequency. |
format |
Report |
author |
Mork, Odd Ivar |
author_facet |
Mork, Odd Ivar |
author_sort |
Mork, Odd Ivar |
title |
Aggresive behavior of two size classes of four salmonid species |
title_short |
Aggresive behavior of two size classes of four salmonid species |
title_full |
Aggresive behavior of two size classes of four salmonid species |
title_fullStr |
Aggresive behavior of two size classes of four salmonid species |
title_full_unstemmed |
Aggresive behavior of two size classes of four salmonid species |
title_sort |
aggresive behavior of two size classes of four salmonid species |
publisher |
Havforskningsinstituttet |
publishDate |
1995 |
url |
http://hdl.handle.net/11250/113483 |
genre |
Arctic charr Atlantic salmon Salmo salar Salvelinus alpinus |
genre_facet |
Arctic charr Atlantic salmon Salmo salar Salvelinus alpinus |
op_source |
11 s. |
op_relation |
Fisken og havet Nr.19 - 1995 urn:issn:0071-5638 http://hdl.handle.net/11250/113483 |
_version_ |
1810294410164830208 |