Abstract
In August 2006, a Pyrethrin insecticide synergized with piperonyl butoxide (EverGreen® Crop Protection EC 60-6, McLaughlin Gormley King Company, Golden Valley, MN) was sprayed in ultra-low volumes over the city of Davis, CA, by the Sacramento-Yolo Mosquito and Vector Control District to control mosquitoes transmitting West Nile virus. Concurrently, we evaluated the impact of the insecticide on non target arthropods by 1) comparing mortality of treatment and control groups of sentinel arthropods, and 2) measuring the diversity and abundance of dead arthropods found on treatment and control tarps placed on the ground. We found no effect of spraying on nontarget sentinel species including dragonflies (Sympetrum corruptum), spiders (Argiope aurantia), butterflies (Colias eurytheme), and honeybees (Apis mellifera). In contrast, significantly higher diversity and numbers of nontarget arthropods were found on ground tarps placed in sprayed versus unsprayed areas. All of the dead nontarget species were small-bodied arthropods as opposed to the large-bodied sentinels that were not affected. The mortality of sentinel mosquitoes placed at the same sites as the nontarget sentinels and ground tarps ranged from 0% to 100%. Dead mosquitoes were not found on the ground tarps. We conclude that aerial spraying with Pyrethrins had no impact on the large-bodied arthropods placed in the spray zone, but did have a measurable impact on a wide range of small-bodied organisms.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 335-339 |
| Number of pages | 5 |
| Journal | Journal of the American Mosquito Control Association |
| Volume | 23 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2007 |
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Keywords
- Nontarget mortality
- Pyrethrins
- Ultra-low volume adulticide
ASJC Scopus subject areas
- Insect Science
Cite this
Nontarget effects of the mosquito adulticide pyrethrin applied aerially during a West Nile virus outbreak in an urban California environment. / Boyce, Walter M; Lawler, Sharon P.; Schultz, Jennifer M.; McCauley, Shannon J.; Kimsey, Lynn S.; Niemela, Michael K.; Nielsen, Carrie F.; Reisen, William.
In: Journal of the American Mosquito Control Association, Vol. 23, No. 3, 09.2007, p. 335-339.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nontarget effects of the mosquito adulticide pyrethrin applied aerially during a West Nile virus outbreak in an urban California environment
AU - Boyce, Walter M
AU - Lawler, Sharon P.
AU - Schultz, Jennifer M.
AU - McCauley, Shannon J.
AU - Kimsey, Lynn S.
AU - Niemela, Michael K.
AU - Nielsen, Carrie F.
AU - Reisen, William
PY - 2007/9
Y1 - 2007/9
N2 - In August 2006, a Pyrethrin insecticide synergized with piperonyl butoxide (EverGreen® Crop Protection EC 60-6, McLaughlin Gormley King Company, Golden Valley, MN) was sprayed in ultra-low volumes over the city of Davis, CA, by the Sacramento-Yolo Mosquito and Vector Control District to control mosquitoes transmitting West Nile virus. Concurrently, we evaluated the impact of the insecticide on non target arthropods by 1) comparing mortality of treatment and control groups of sentinel arthropods, and 2) measuring the diversity and abundance of dead arthropods found on treatment and control tarps placed on the ground. We found no effect of spraying on nontarget sentinel species including dragonflies (Sympetrum corruptum), spiders (Argiope aurantia), butterflies (Colias eurytheme), and honeybees (Apis mellifera). In contrast, significantly higher diversity and numbers of nontarget arthropods were found on ground tarps placed in sprayed versus unsprayed areas. All of the dead nontarget species were small-bodied arthropods as opposed to the large-bodied sentinels that were not affected. The mortality of sentinel mosquitoes placed at the same sites as the nontarget sentinels and ground tarps ranged from 0% to 100%. Dead mosquitoes were not found on the ground tarps. We conclude that aerial spraying with Pyrethrins had no impact on the large-bodied arthropods placed in the spray zone, but did have a measurable impact on a wide range of small-bodied organisms.
AB - In August 2006, a Pyrethrin insecticide synergized with piperonyl butoxide (EverGreen® Crop Protection EC 60-6, McLaughlin Gormley King Company, Golden Valley, MN) was sprayed in ultra-low volumes over the city of Davis, CA, by the Sacramento-Yolo Mosquito and Vector Control District to control mosquitoes transmitting West Nile virus. Concurrently, we evaluated the impact of the insecticide on non target arthropods by 1) comparing mortality of treatment and control groups of sentinel arthropods, and 2) measuring the diversity and abundance of dead arthropods found on treatment and control tarps placed on the ground. We found no effect of spraying on nontarget sentinel species including dragonflies (Sympetrum corruptum), spiders (Argiope aurantia), butterflies (Colias eurytheme), and honeybees (Apis mellifera). In contrast, significantly higher diversity and numbers of nontarget arthropods were found on ground tarps placed in sprayed versus unsprayed areas. All of the dead nontarget species were small-bodied arthropods as opposed to the large-bodied sentinels that were not affected. The mortality of sentinel mosquitoes placed at the same sites as the nontarget sentinels and ground tarps ranged from 0% to 100%. Dead mosquitoes were not found on the ground tarps. We conclude that aerial spraying with Pyrethrins had no impact on the large-bodied arthropods placed in the spray zone, but did have a measurable impact on a wide range of small-bodied organisms.
KW - Nontarget mortality
KW - Pyrethrins
KW - Ultra-low volume adulticide
UR - http://www.scopus.com/inward/record.url?scp=38449119932&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38449119932&partnerID=8YFLogxK
U2 - 10.2987/8756-971X(2007)23[335:NEOTMA]2.0.CO;2
DO - 10.2987/8756-971X(2007)23[335:NEOTMA]2.0.CO;2
M3 - Article
C2 - 17939516
AN - SCOPUS:38449119932
VL - 23
SP - 335
EP - 339
JO - Journal of the American Mosquito Control Association
JF - Journal of the American Mosquito Control Association
SN - 8756-971X
IS - 3
ER -