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| Title | Methoprene Concentrations in Surface Water Samples from Grant County Mosquito Control District No. 1 | |||
| Month-Year Published | January 2006 | |||
| Online Availability |
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| Short Description |
The Department of Ecology monitored methoprene concentrations in surface water samples from Grant County Mosquito Control District No. 1 during the 2005 application season. Methoprene (Altosid) is permitted for use to control mosquitoes in Washington State. It mimics a juvenile growth hormone, preventing mosquito larvae from maturing into adults. Unable to metamorphose, the mosquitoes die in the pupal stage. The Water Quality Program wanted to know what kind of methoprene concentrations occur when there is treatment and to verify that the concentrations are not a significant concern for aquatic life. (Also see abstract below) | |||
| Publication Number | 06-03-001 | |||
| Author(s) | Johnson, A. and K. Kinney | |||
| Print Availability | ||||
| Number of pages | 19 pp. | |||
| Keywords | county, mosquito control, surface water, water | |||
| Subject Waterbodies |
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| Related Publications | Title | Relationship | ||
| Quality Assurance Project Plan: Methoprene Monitoring in Grant County Mosquito Control District #1 | similar topic | |||
| Abstract | Long Description |
The Washington State Department of Ecology monitored methoprene concentrations in surface water samples from Grant County Mosquito Control District No. 1 during the 2005 application season. Methoprene (trade name Altosid) is a mosquito larvicide that mimics a juvenile growth hormone, thereby preventing the larvae from maturing into adults. Methoprene was detected in only 6% of the samples collected (4 out of 68). The maximum concentrations recorded were in the range of 0.1 - 0.6 ug/L (parts per billion). A breakdown product, methoprene acid, was also analyzed and only detected in one instance. The results of this study are briefly compared to available water quality criteria and to data from similar monitoring programs. |
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