Boophilus annulatus and B. microplus: Laboratory Tests of Insecticides13
- 1 February 1973
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 66 (1) , 130-133
- https://doi.org/10.1093/jee/66.1.130
Abstract
Engorged females of the cattle tick, Boophilus annulatus (Say), and the southern cattle tick, B. microplus (Canestrini), were dipped in emulsions, suspensions, or solutions of 30 insecticides. The effect on estimated reproduction (ER. ER = g eggs/g × estimated % hatch × 20,000) was determined, and the percentage reductions in ER afforded by several concentrations of each insecticide were analyzed by the log probit method. The results were presented in terms of concentrations of insecticides affording 50% (IC50) and 90% (IC90) inhibition of reproduction. Rankings by b, IC50 and IC90 values for the 2 species showed a highly significant statistical relationship. Also, the ranking of IC50, values was significantly related to the ranking of the same treatments applied as sprays to cattle.Keywords
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