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Survival, fecundity, and egg fertility of Culicoides variipennis (Diptera: Ceratopogonidae) fed on calves inoculated with ivermectin.

Authors
  • Holbrook, F R
Type
Published Article
Journal
Journal of the American Mosquito Control Association
Publication Date
Mar 01, 1994
Volume
10
Issue
1
Pages
7–9
Identifiers
PMID: 8014630
Source
Medline
License
Unknown

Abstract

Female Culicoides variipennis were fed at 1-18 days postinoculation on calves treated with a commercial injectable formulation of ivermectin at the recommended rate of 200 micrograms/kg of body weight. There were no significant differences between treated and untreated animals in the survival rate of the flies at 24 h and 48 h postinoculation and the number of eggs produced per living female. There was a significantly greater mean hatch rate of eggs from flies fed on the untreated animals (65.8%) than those fed on the treated animals (52.8%). The recommended use rate of ivermectin does not appear to provide significant mortality for female C. variipennis, nor affect egg deposition or hatch rate sufficiently to reduce vector populations.

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