Sensibilität von Seefischen an Bord. Teil 3: Untersuchungen an demersalen Fischarten der Barentssee

Kuhlmann, Holmer and Münkner, Werner and Oehlenschläger, Jörg (2001) Sensibilität von Seefischen an Bord. Teil 3: Untersuchungen an demersalen Fischarten der Barentssee. Informationen für die Fischwirtschaft aus der Fischereiforschung, 48(1), pp. 34-37.

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Official URL: http://aquacomm.fcla.edu/3182

Abstract

In previous papers the sensibility of pelagic and demersal fishes caught at depth of up to 80 m was reported. This paper deals with the sensitiveness of flatfishes, gadids, and redfish caught at depth between 260 and 450 m and with trawling times between 1 and 6 h. The sensitiveness of the fishes was tested according to the method described in previous publications (Münkner et. al. 1998) after 10 min keeping in running sea water and after 1h bulk storage respectively. The sensitiveness of the fishes increased from cod to saithe to haddock. Surprisingly American plaice and Greenland halibut turned out to be very sensitive, far more sensitive than plaice and dab caught at lower depths in the North Sea. This was indicated by the high amount of animals showing rigor already after a trawling time of 2 hand 10 min of keeping in seawater. After 1 h of bulk storage and increasing trawling time sensitiveness of all fishes decreased, as expected, significantly. Besides mechanical encroachments the main problem for the fishes caught at greater depths was the gas supersaturation in the blood and tissue causing blockage of the gill capillary vessels, exophthalmus, visible gas bubbles in the skin and eyes, and in some cases protusion of the intestines through the snout due to rapid dilatation of the swimbladder.

Item Type: Article
Title: Sensibilität von Seefischen an Bord. Teil 3: Untersuchungen an demersalen Fischarten der Barentssee
Personal Creator/Author:
CreatorsEmail
Kuhlmann, Holmer
Münkner, Werner
Oehlenschläger, JörgJ.Oehlenschlaeger@gmx.net
Refereed: No
Journal or Publication Title: Informationen für die Fischwirtschaft aus der Fischereiforschung
Volume: 48
Number: 1
Page Range: pp. 34-37
Date: 2001
ISSN: 1437-5842
Contact Email Address: J.Oehlenschlaeger@gmx.net
Issuing Agency: Bundesforschungsanstalt für Fischerei
Additional Information: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery Research in 2010.
Uncontrolled Keywords: animal welfare; fishing method
Subjects: Fisheries
Item ID: 3182
Depositing User: Horst Bahl
Date Deposited: 17 Apr 2010 12:36
Last Modified: 10 Nov 2012 14:21
Related URLs:
URI: http://aquaticcommons.org/id/eprint/3182

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