New strategies for the control of the parthenogenetic chironomid (Paratanytarsus grimmii) (Diptera:Chironomidae) infecting water systems.

Type

Article

Date of Publication

1997

Original Publication

Journal of the American Mosquito Control Association

Volume

13

Series / Issue

Issue: 2

Pages

189-192

Contributed by

American Mosquito Control Association

Notes

Author(s) - Alexander MK.Merritt RW.Berg MB.

 

Abstract

Control of the midge, Paratanytarsus grimmii, infesting municipal water systems has proven to be difficult, because it is a parthenogenetic species that can oviposit as a pharate adult and reproduce within the system. Mean densities of P. grimmii in a midwestern USA water distribution system ranged from approximately 140 to 560 individuals/sampling date, and all 4 instars and pupae were present throughout the sampling period. Two products were tested as potential chemical controls: Cat-Floc LS, a coagulant produced by the Calgon Corporation, and 35% hydrogen peroxide, a water purifier. The results of laboratory bioassays showed that Cat-Floc LS over a 15-day period was most effective against P. grimmii.

Notes

Author(s) - Alexander MK.Merritt RW.Berg MB.