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Sublethal concentrations of clothianidin affect fecundity and key demographic parameters of the chive maggot, Bradysia odoriphaga.
- Source :
-
Ecotoxicology (London, England) [Ecotoxicology] 2021 Aug; Vol. 30 (6), pp. 1150-1160. Date of Electronic Publication: 2021 Jun 24. - Publication Year :
- 2021
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Abstract
- Bradysia odoriphaga is a major insect pest that infests Chinese chive in northern China. Clothianidin is a second-generation neonicotinoid insecticide that is commonly used against B. odoriphaga. In this study, the effect of sublethal clothianidin concentrations (LC <subscript>5</subscript> and LC <subscript>10</subscript> ) on key biological characteristics of B. odoriphaga was investigated using an age-stage, two-sex life table method. Bioassays results showed that clothianidin exhibited high toxicity against B. odoriphaga with LC <subscript>50</subscript> of 1.898 mg L <superscript>-1</superscript> following 24 h exposure. The developmental duration of larvae was significantly increased when exposed to the LC <subscript>5</subscript> (0.209 mg L <superscript>-1</superscript> ) and LC <subscript>10</subscript> (0.340 mg L <superscript>-1</superscript> ) of clothianidin. No significant effects were observed on the pupal stage, adult pre-oviposition period (APOP), total pre-oviposition period (TPOP), and mean longevities of male and female. The oviposition period and fecundity of B. odoriphaga were reduced in clothianidin-treated groups. Moreover, key demographic parameters, including the intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R <subscript>0</subscript> ), were significantly decreased by the LC <subscript>5</subscript> and LC <subscript>10</subscript> of clothianidin, while no effects were noted on mean generation time (T). Overall, this study showed that sublethal concentrations of clothianidin have a detrimental effect on B. odoriphaga developmental period, fecundity, and life table parameters. Therefore, clothianidin has the potential to suppress the population of B. odoriphaga even at sublethal concentrations.<br /> (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Details
- Language :
- English
- ISSN :
- 1573-3017
- Volume :
- 30
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Ecotoxicology (London, England)
- Publication Type :
- Academic Journal
- Accession number :
- 34165677
- Full Text :
- https://doi.org/10.1007/s10646-021-02446-x