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MOLT INDICATORS AND GROWTH PER MOLT FOR MALE SNOW CRABS (CHIONOECETES OPILIO)

MOLT INDICATORS AND GROWTH PER MOLT FOR MALE SNOW CRABS (CHIONOECETES OPILIO) and It is important for fishery scientists to be able to determine the stage of individual crabs in the molt cycle. The timing of the molting season and the habitats where molt- ing occurs can then be quantified. If crabs which are close to molting can be identified, they can be held in aquaria for short periods of time for growth studies. This information is useful for short-term forecasting of re- cruitment. In this paper, we consider indi- cators of imminent molting for male snow crabs (Chionoecetes opilio O. Fabricius) and we estimate growth per molt. Drach and Tchernigovtzeff(1967) showed for a variety of Crustacea that certain mouthparts undergo visible changes asso- ciated with the molt cycle. Moriyasu and Mallet (1986) and O'Halloran and O'Dor (1988) used that approach to describe a se- ries of mouthpart stages associated with the molt cycle of male snow crabs (C. opilio). Moriyasu and Mallet (1986) reported that the mouthparts must be stored in chilled sea water and examined under a microscope within 48 h. Recently, Moriyasu (M. Mo- riyasu, Department of Fisheries and Oceans, Moncton, New Brunswick, personal com- munication) has had some success in storing mouthparts in Formalin for up http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Crustacean Biology Brill

MOLT INDICATORS AND GROWTH PER MOLT FOR MALE SNOW CRABS (CHIONOECETES OPILIO)

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Publisher
Brill
Copyright
Copyright 1994 by Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0278-0372
eISSN
1937-240X
DOI
10.1163/193724094X00263
Publisher site
See Article on Publisher Site

Abstract

and It is important for fishery scientists to be able to determine the stage of individual crabs in the molt cycle. The timing of the molting season and the habitats where molt- ing occurs can then be quantified. If crabs which are close to molting can be identified, they can be held in aquaria for short periods of time for growth studies. This information is useful for short-term forecasting of re- cruitment. In this paper, we consider indi- cators of imminent molting for male snow crabs (Chionoecetes opilio O. Fabricius) and we estimate growth per molt. Drach and Tchernigovtzeff(1967) showed for a variety of Crustacea that certain mouthparts undergo visible changes asso- ciated with the molt cycle. Moriyasu and Mallet (1986) and O'Halloran and O'Dor (1988) used that approach to describe a se- ries of mouthpart stages associated with the molt cycle of male snow crabs (C. opilio). Moriyasu and Mallet (1986) reported that the mouthparts must be stored in chilled sea water and examined under a microscope within 48 h. Recently, Moriyasu (M. Mo- riyasu, Department of Fisheries and Oceans, Moncton, New Brunswick, personal com- munication) has had some success in storing mouthparts in Formalin for up

Journal

Journal of Crustacean Biology – Brill

Published: Jan 1, 1994

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