ISSN:
1573-5117
Keywords:
crayfish harvest
;
life history
;
molt
;
Orconectes
;
thermal regime
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Catch per unit effort (CPUE) was monitored for two species of crayfish in northeastern Minnesota, USA. Lake catches of Orconectes virilis were correlated with water temperature; peak catches were late in the season when lakes were warmest although increases in temperature did not always bring increases in catch. Catches of O. propinquus in streams increased with increasing temperatures early in the season. However, during the remainder of the ice-free season, catches of O. propinquus were more closely related to the timing of life-history events. Peak catches for O. propinquus occurred between molting periods and after the females released young. Efficient harvest and management of crayfish in northern locations requires monitoring temperature and understanding life-history relationships.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00016879
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