MIREX RESIDUES IN NONTARGET ORGANISMS AFTER APPLICATION OF 10-5 BAIT FOR FIRE ANT CONTROL, NORTHEAST FLORIDA 1972-74

  • 1 January 1977
    • journal article
    • research article
    • Vol. 11  (3) , 146-156
Abstract
The 10-5 bait formulation of mirex insecticide was applied to a 20,000 acre area of northeast Florida [USA]. For 24 mo. after application, samples of a wide variety of fauna were collected and analyzed for mirex content. Insects accumulated mirex to the greatest extent in the first 6 mo. after application; most residues had decreased greatly by 12 mo. Other invertebrates showed low mirex levels during the first 9 mo. after application and none after 12 mo. Fish possessed low levels of insecticides for 9 mo.; amphibians showed mirex residues for 12 mo. after application. In general, reptiles had low levels throughout the 24 mo. period and mammals had higher levels, particularly in fat tissues. Birds consistently had low to moderate mirex levels. After a single application of 10-5 mirex bait, only relatively low levels of insecticide were detected in exposed fauna. After 24 mo., mirex was found infrequently and at low levels.

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