Life Histories of Cricotopus ( Cricotopus ) bicinctus and C . ( C .) mackenziensis (Diptera: Chironomidae) in the Fort Simpson Area, Northwest Territories

Cricotopus (Cricotopus) bicinctus (Meigen) and C. (C.) mackenziensis Oliver emerge from June to September in the Fort Simpson area, Northwest Territories. Cricotopus bicinctus begins and ends emerging later than C. mackenziensis. Cricotopus bicinctus apparently produces a mixture of two and three ge...

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Bibliographic Details
Published in:Journal of the Fisheries Research Board of Canada
Main Authors: Rosenberg, David M., Wiens, Allen P., Sæther, Ole A.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1977
Subjects:
General Medicine
Northwest Territories
Fort Simpson
Online Access:http://dx.doi.org/10.1139/f77-036
http://www.nrcresearchpress.com/doi/pdf/10.1139/f77-036
Description
Summary:Cricotopus (Cricotopus) bicinctus (Meigen) and C. (C.) mackenziensis Oliver emerge from June to September in the Fort Simpson area, Northwest Territories. Cricotopus bicinctus begins and ends emerging later than C. mackenziensis. Cricotopus bicinctus apparently produces a mixture of two and three generations per year, whereas C. mackenziensis apparently produces three generations per year. Both species overwinter mainly in the second instar. Emergence data from other studies, when reevaluated, appear to underestimate the number of generations produced by C. bicinctus, indicating a similar number of generations as in the Fort Simpson area.

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