Volume 12
Issue 2
Fisheries
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume12/issue2/abs-18.html
EVALUATION OF IMMOBILIZING METHODS FOR THE CHINESE MITTEN CRAB, ERIOCHEIR SINENSIS (MILNE-EDWARDS)
Grzegorz Jan Hajek, Marcin Choczewski, Robert Dziaman, Bernard K造szejko
Division of Fish Physiology,
West Pomeranian University of Technology, Szczecin, Poland
ABSTRACT
This study investigated
the efficacy of eight chemicals administered via bath and cooling to immobilize
the Chinese mitten crab. Isobutyl alcohol, isoflurane, 2-phenoxyethanol, Propiscin,
at the concentration of 20 mLL-1 and MS-222 at the concentration of
1000 mgL-1 had no anaesthetic effect on crabs for 30 min of exposure.
Clove oil was only partially effective at the concentration of 20 mLL-1.The
best results were obtained when chloroform (1.5 mLL-1) and diethyl
ether (10 mLL-1) were used, causing anaesthesia of all crabs within
30 min. The shortest induction time (about 5 min) and rapid recovery (about 1
min) was obtained by cooling. From the tested methods the usage of chloroform
anaesthesia and cooling seem to be most suitable in the Chinese mitten crab.
Key words: anaesthesia, Eriocheir sinensis, immobilizati, mitten crab.
Grzegorz Jan Hajek
Division of Fish Physiology,
West Pomeranian University of Technology, Szczecin, Poland
Kazimierza Kr鏊ewicza 4, 71-550 Szczecin, Poland
email: gjh@fish.ar.szczecin.pl
Marcin Choczewski
Division of Fish Physiology,
West Pomeranian University of Technology, Szczecin, Poland
Kazimierza Kr鏊ewicza 4, 71-550 Szczecin, Poland
Robert Dziaman
Division of Fish Physiology,
West Pomeranian University of Technology, Szczecin, Poland
Kazimierza Kr鏊ewicza 4, 71-550 Szczecin, Poland
Bernard K造szejko
Division of Fish Physiology,
West Pomeranian University of Technology, Szczecin, Poland
Kazimierza Kr鏊ewicza 4, 71-550 Szczecin, Poland
Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.