Avoidance reactions of ultrasonic tagged cod during bottom trawling in shallow water

dc.contributor.author	Engås, Arill
dc.contributor.author	Soldal, Aud Vold
dc.contributor.author	Øvredal, Jan Tore
dc.date.accessioned	2012-08-28T13:39:38Z
dc.date.available	2012-08-28T13:39:38Z
dc.date.issued	1991
dc.identifier.citation	This report is not to be cited without prior reference to the authors	no_NO
dc.identifier.uri	http://hdl.handle.net/11250/104860
dc.description.abstract	Introduction: Observations made by echo sounder (Ona 1988) have shown that cod (Gadus morhua L.) may avoid an approaching survey vessel horizontally and vertically. However, there has been a lack of information on the escapement behaviour of the individual fish. This short note discribes an experiment carried out in a shallow fjord in Northern Norway, where the reactions of single cod towards a small survey vessel during bottom trawling were studied, using ultrasonic tagging technique.	no_NO
dc.language.iso	eng	no_NO
dc.publisher	ICES	no_NO
dc.relation.ispartofseries	ICES CM Documents;1991/B:41
dc.subject	fish behaviour	no_NO
dc.subject	fiskeatferd	no_NO
dc.subject	bottom trawl	no_NO
dc.subject	bunntrål	no_NO
dc.title	Avoidance reactions of ultrasonic tagged cod during bottom trawling in shallow water	no_NO
dc.type	Working paper	no_NO
dc.subject.nsi	VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485	no_NO
dc.subject.nsi	VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924	no_NO
dc.source.pagenumber	9 s.	no_NO