Honey bees are crucial pollinators for many economically important fruit crops. The recent honey bee colony decline in the United States and other regions of the world has caused concern among commercial beekeepers, research groups, the government, and the general public. The role of pesticides in recent honey bee declines has not been fully determined. In Louisiana, it is a common practice to spray truck based ultra-low volume mosquito adulticides in Integrated Mosquito Management Programs to control mosquitoes and minimize the risk of vector borne viruses such as West Nile, chikungunya, and Zika. This study measured the effects of truck based ultra-low volume (ULV) mosquito adulticides on honey bees in a real world scenario. We looked at mortality, colony health (number of adult bees, brood quantity and quality), and detoxification enzymes (esterase and glutathione S-transferase) on honey bees from sentinel bee hives in Baton Rouge, Louisiana over a seven week period. The mosquito adulticides used by mosquito control programs during this study were Scourge, Duet and Deltagard. We did not find significant differences in honey bee mortality, colony health (frames of bees and brood quality) or detoxification enzymes among our control and treatment sites over the seven weeks. We found differences in brood quantity between control and treatment; however only two colonies at one of our treatment sites skewed the result in brood quantity. Although the findings of this study suggests that there is no effect of truck based ultra-low volume mosquito adulticides on bee mortality, colony health, and detoxification enzymes on honey bees, there might be deleterious effects if mosquito adulticides are used inappropriately.
| Identifer | oai:union.ndltd.org:LSU/oai:etd.lsu.edu:etd-11142016-105318 |
| Date | 08 December 2016 |
| Creators | Pokhrel, Vivek |
| Contributors | Ottea, James, Danka, G. Robert, Healy, Kristen |
| Publisher | LSU |
| Source Sets | Louisiana State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lsu.edu/docs/available/etd-11142016-105318/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached herein a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to LSU or its agents the non-exclusive license to archive and make accessible, under the conditions specified below and in appropriate University policies, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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