Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito management
There are relatively few experimental studies and risk assessments of the effects on non-target insects from ultra-low volume (ULV) insecticides used for management of adult mosquitoes. Therefore, we evaluated factors that may influence the ability of an insect to intercept the insecticide at the ti...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
PeerJ Inc.
2016-06-01
|
| Series: | PeerJ |
| Subjects: | |
| Online Access: | https://peerj.com/articles/2167.pdf |
| _version_ | 1797420862826086400 |
|---|---|
| author | Robert K.D. Peterson Collin J. Preftakes Jennifer L. Bodin Christopher R. Brown Alyssa M. Piccolomini Jerome J. Schleier |
| author_facet | Robert K.D. Peterson Collin J. Preftakes Jennifer L. Bodin Christopher R. Brown Alyssa M. Piccolomini Jerome J. Schleier |
| author_sort | Robert K.D. Peterson |
| collection | DOAJ |
| description | There are relatively few experimental studies and risk assessments of the effects on non-target insects from ultra-low volume (ULV) insecticides used for management of adult mosquitoes. Therefore, we evaluated factors that may influence the ability of an insect to intercept the insecticide at the time of application by using Hippodamia convergens (Coleoptera: Coccinellidae) in field bioassay experiments in 2011 and 2015. Treatment factors included different distances, two cage heights (ground-level and 1.5 m above ground) to the point of the application, and covered vs. uncovered cage faces (2015 only). Insecticides used included a water-based formulation (Aqua-Reslin®) and an oil-based formulation (Permanone® 30-30) of permethrin. Cage height was highly significant both years, with much less acute (i.e., short-term exposure) mortality at ground-level compared with 1.5 m. In 2011, acute mortality was less at ground-level (mean = 3.2%, median = 0%) compared to 1.5 m (mean = 85.2%, median = 100%). Cage type also was highly significant, with less mortality in covered cages compared to uncovered cages. Mortality by cage height and cage type was as follows: ground level, covered cage (mean = 2.8%, median = 0.1%); ground level, uncovered cage (mean = 41.9%, median = 9.6%); 1.5 m, covered cage (mean = 6.8%, median = 0%); 1.5 m, uncovered cage (mean = 83.7%, median = 100%). Results suggest that acute mortality to non-target insects may vary considerably based on their height and their ability to directly intercept the insecticide as the aerosol passes through the area being sprayed. |
| first_indexed | 2024-03-09T07:08:36Z |
| format | Article |
| id | doaj.art-c1510abb443c496eb101230cc5f294ef |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T07:08:36Z |
| publishDate | 2016-06-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-c1510abb443c496eb101230cc5f294ef2023-12-03T09:21:07ZengPeerJ Inc.PeerJ2167-83592016-06-014e216710.7717/peerj.2167Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito managementRobert K.D. PetersonCollin J. PreftakesJennifer L. BodinChristopher R. BrownAlyssa M. PiccolominiJerome J. SchleierThere are relatively few experimental studies and risk assessments of the effects on non-target insects from ultra-low volume (ULV) insecticides used for management of adult mosquitoes. Therefore, we evaluated factors that may influence the ability of an insect to intercept the insecticide at the time of application by using Hippodamia convergens (Coleoptera: Coccinellidae) in field bioassay experiments in 2011 and 2015. Treatment factors included different distances, two cage heights (ground-level and 1.5 m above ground) to the point of the application, and covered vs. uncovered cage faces (2015 only). Insecticides used included a water-based formulation (Aqua-Reslin®) and an oil-based formulation (Permanone® 30-30) of permethrin. Cage height was highly significant both years, with much less acute (i.e., short-term exposure) mortality at ground-level compared with 1.5 m. In 2011, acute mortality was less at ground-level (mean = 3.2%, median = 0%) compared to 1.5 m (mean = 85.2%, median = 100%). Cage type also was highly significant, with less mortality in covered cages compared to uncovered cages. Mortality by cage height and cage type was as follows: ground level, covered cage (mean = 2.8%, median = 0.1%); ground level, uncovered cage (mean = 41.9%, median = 9.6%); 1.5 m, covered cage (mean = 6.8%, median = 0%); 1.5 m, uncovered cage (mean = 83.7%, median = 100%). Results suggest that acute mortality to non-target insects may vary considerably based on their height and their ability to directly intercept the insecticide as the aerosol passes through the area being sprayed.https://peerj.com/articles/2167.pdfRisk assessmentExposure assessmentNon-target organismsPyrethroidPesticide |
| spellingShingle | Robert K.D. Peterson Collin J. Preftakes Jennifer L. Bodin Christopher R. Brown Alyssa M. Piccolomini Jerome J. Schleier Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito management PeerJ Risk assessment Exposure assessment Non-target organisms Pyrethroid Pesticide |
| title | Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito management |
| title_full | Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito management |
| title_fullStr | Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito management |
| title_full_unstemmed | Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito management |
| title_short | Determinants of acute mortality of Hippodamia convergens (Coleoptera: Coccinellidae) to ultra-low volume permethrin used for mosquito management |
| title_sort | determinants of acute mortality of hippodamia convergens coleoptera coccinellidae to ultra low volume permethrin used for mosquito management |
| topic | Risk assessment Exposure assessment Non-target organisms Pyrethroid Pesticide |
| url | https://peerj.com/articles/2167.pdf |
| work_keys_str_mv | AT robertkdpeterson determinantsofacutemortalityofhippodamiaconvergenscoleopteracoccinellidaetoultralowvolumepermethrinusedformosquitomanagement AT collinjpreftakes determinantsofacutemortalityofhippodamiaconvergenscoleopteracoccinellidaetoultralowvolumepermethrinusedformosquitomanagement AT jenniferlbodin determinantsofacutemortalityofhippodamiaconvergenscoleopteracoccinellidaetoultralowvolumepermethrinusedformosquitomanagement AT christopherrbrown determinantsofacutemortalityofhippodamiaconvergenscoleopteracoccinellidaetoultralowvolumepermethrinusedformosquitomanagement AT alyssampiccolomini determinantsofacutemortalityofhippodamiaconvergenscoleopteracoccinellidaetoultralowvolumepermethrinusedformosquitomanagement AT jeromejschleier determinantsofacutemortalityofhippodamiaconvergenscoleopteracoccinellidaetoultralowvolumepermethrinusedformosquitomanagement |