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Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae)
The Western flower thrips (WFT, Frankliniella occidentalis) is a global polyphagous pest that is often dependent on chemical control. Imidacloprid has been a commonly used chemical insecticide for effective control of WFT. Low concentrations of insecticides can have sublethal effects on individual i...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359431/ https://www.ncbi.nlm.nih.gov/pubmed/30609643 http://dx.doi.org/10.3390/insects10010003 |
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author | Cao, Yu Yang, Hong Li, Jun Wang, Chun Li, Can Gao, Yulin |
author_facet | Cao, Yu Yang, Hong Li, Jun Wang, Chun Li, Can Gao, Yulin |
author_sort | Cao, Yu |
collection | PubMed |
description | The Western flower thrips (WFT, Frankliniella occidentalis) is a global polyphagous pest that is often dependent on chemical control. Imidacloprid has been a commonly used chemical insecticide for effective control of WFT. Low concentrations of insecticides can have sublethal effects on individual insects. However, no more information is known about the effects of exposure at low concentrations of imidacloprid on WFT. Here, we evaluated the effects of imidacloprid at sublethal concentrations on WFT population growth parameters. We first exposed the parental generation to LC(10) (56.8 mg/L) and LC(25) (79.2 mg/L) concentrations of imidacloprid. We then quantified various parameters related to the development, survival, and fecundity of the F(1) generation also exposed to these same concentrations. The development time of the treatment groups exposed to imidacloprid was significantly shorter than the control group, and the net reproductive rate (R(0)) was significantly higher for treatment groups than for the control group. For both variables, there was no significant difference between LC(10) and LC(25) exposure. The generational survival rate was significantly higher for the control group, followed by the LC(10) treatment group and then the LC(25) treatment group. However, the opposite was true for fecundity and intrinsic rate of increase (r(m)) of WFT. In summary, exposure to low concentrations of imidacloprid was positive for the population development of WFT, which may contribute to the development of insecticide resistance and cause resurgence in WFT populations. |
format | Online Article Text |
id | pubmed-6359431 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63594312019-02-12 Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) Cao, Yu Yang, Hong Li, Jun Wang, Chun Li, Can Gao, Yulin Insects Article The Western flower thrips (WFT, Frankliniella occidentalis) is a global polyphagous pest that is often dependent on chemical control. Imidacloprid has been a commonly used chemical insecticide for effective control of WFT. Low concentrations of insecticides can have sublethal effects on individual insects. However, no more information is known about the effects of exposure at low concentrations of imidacloprid on WFT. Here, we evaluated the effects of imidacloprid at sublethal concentrations on WFT population growth parameters. We first exposed the parental generation to LC(10) (56.8 mg/L) and LC(25) (79.2 mg/L) concentrations of imidacloprid. We then quantified various parameters related to the development, survival, and fecundity of the F(1) generation also exposed to these same concentrations. The development time of the treatment groups exposed to imidacloprid was significantly shorter than the control group, and the net reproductive rate (R(0)) was significantly higher for treatment groups than for the control group. For both variables, there was no significant difference between LC(10) and LC(25) exposure. The generational survival rate was significantly higher for the control group, followed by the LC(10) treatment group and then the LC(25) treatment group. However, the opposite was true for fecundity and intrinsic rate of increase (r(m)) of WFT. In summary, exposure to low concentrations of imidacloprid was positive for the population development of WFT, which may contribute to the development of insecticide resistance and cause resurgence in WFT populations. MDPI 2019-01-01 /pmc/articles/PMC6359431/ /pubmed/30609643 http://dx.doi.org/10.3390/insects10010003 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Cao, Yu Yang, Hong Li, Jun Wang, Chun Li, Can Gao, Yulin Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) |
title | Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) |
title_full | Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) |
title_fullStr | Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) |
title_full_unstemmed | Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) |
title_short | Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) |
title_sort | sublethal effects of imidacloprid on the population development of western flower thrips frankliniella occidentalis (thysanoptera: thripidae) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359431/ https://www.ncbi.nlm.nih.gov/pubmed/30609643 http://dx.doi.org/10.3390/insects10010003 |
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