Daily locomotor activity of the parasitoid wasp Meteorus pulchricornis (Hymenoptera: Braconidae) that attacks exposed lepidopteran larvae

Nishimura, Takuma; Fujii, Tomoyuki; Sakamoto, Katsuhiko; Maetô, Kaoru

doi:10.1007/s13355-015-0362-7

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…The solitary endoparasitoid Meteorus pulchricornis (Wesmael) is a dominant natural enemy of many lepidopteran pests, including S. litura ( Sheng et al 2014 , 2017 , Nishimura et al 2015 , Maeto 2018 , Nakano et al 2018 ). There have been many studies addressing the insecticide resistance of S. litura ( Shi et al 2019 , Xu et al 2020 ); however, there are few studies on the negative effects of insecticides on M. pulchricornis .…”

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confidence: 99%

Evaluation of Sensitivity to Phoxim and Cypermethrin in an Endoparasitoid,Meteorus pulchricornis(Wesmael) (Hymenoptera: Braconidae), and Its Parasitization Efficiency Under Insecticide Stress

Sheng

Wang

Zhang

et al. 2021

Journal of Insect Science

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Insecticides can have consequences for beneficial arthropods. Insect parasitoids can contact insecticides through direct exposure spray droplets or residues on crop foliage. Here, we focus on better understand the response of Meteorus pulchricornis (Wesmael), a parasitoid wasp of lepidopteran pests, and its detoxification mechanisms on stress caused by phoxim and cypermethrin. Hence, we determined the dose–mortality curves and estimating the sublethal concentrations (LC30 and LC50). Then, we applied the sublethal concentrations against adult parasitoids to assess its survival, parasitism efficacy, and also developmental and morphometric parameters of their offspring. Simultaneously, we check the activities of glutathione S-transferase (GST), acetylcholinesterase (AChE), and peroxidase (POD) after sublethal exposure of both insecticides, which has measured until 48 h after treatment. Overall, phoxim and cypermethrin exhibited acute lethal activity toward the parasitoid with LC50 values 4.608 and 8.570 mg/liter, respectively. Also, we detect that LC30 was able to trigger the enzymatic activity of GST, AChE, and POD, suggesting a potential detoxification mechanism. However, even when subjected to sublethal exposure, our results indicate strong negatives effects, in particular for phoxim, which has affected the parasitism efficacy and also the developmental and morphometric parameters of M. pulchricornis offspring. Therefore, it can be concluded that both phoxim and cypermethrin have negative impacts on M. pulchricornis and we suggest cautioning their use and the need for semifield and field assessments to confirm such an impact.

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confidence: 99%

Evaluation of Sensitivity to Phoxim and Cypermethrin in an Endoparasitoid,Meteorus pulchricornis(Wesmael) (Hymenoptera: Braconidae), and Its Parasitization Efficiency Under Insecticide Stress

Sheng

Wang

Zhang

et al. 2021

Journal of Insect Science

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“…The trials were conducted at room temperature (24–26°C). Since the M. pulchricornis females show a distinct circadian rhythm in adult activity (Nishimura et al ., 2015) and our preliminary test indicates that they keep active when encountering their hosts during the daytime, the experiments were conducted at daytime (generally from 8:00 to 12:00 AM and 2:00 to 5:00 PM).…”

Section: Methodsmentioning

confidence: 99%

Sublethal effects of organophosphorus insecticide phoxim on patch time allocation and oviposition behavior in a parasitoid wasp Meteorus pulchricornis

Sheng

Song

Ahmad

et al. 2021

Bull. Entomol. Res.

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Parasitoid wasps are key agents for controlling insect pests in integrated pest management programs. Although many studies have revealed that the behavior of parasitic wasps can be influenced by insecticides, the strategies of patch time allocation and oviposition have received less attention. In the present study, we forced the endoparasitoid Meteorus pulchricornis to phoxim exposure at the LC30 and tested the foraging behavior within patches with different densities of the host, the larvae of the tobacco cutworm Spodoptera litura. The results showed that phoxim treatment can significantly increase the patch-leaving tendency of female wasps, while host density had no impact. The number of oviposition and the number of previous patch visits also significantly influenced the patch time allocation decisions. The occurrence of oviposition behavior was negatively affected by phoxim exposure; however, progeny production was similar among patches with different host densities. Phoxim exposure shaped the offspring fitness correlates, including longer durations from cocoon to adult wasps, smaller body size, and shorter longevity. The findings of the present study highlight the sublethal effects that reduce the patch residence time and the fitness of parasitoid offspring, suggesting that the application of phoxim in association with M. pulchricornis should be carefully schemed in agroecosystems.

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“…In parasitoids, the circadian system controls the timing of activities such as locomotor, emergence, mating, and oviposition activity [ 1 ]. For example, the locomotor activity of Brachymeria intermedia only occurs during the photophase [ 2 ], while the locomotor activity of female Meteorus pulchricornis wasps peaks just after light off under a photoperiod of 16:8 h (light/dark), indicating a primarily nocturnal pattern [ 3 ]. The emergence of Cotesia kariyai larvae occurs solely during the photophase and is not dependent on the developmental duration, and they can emerge in the new photophase under the reversed cycle [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Circadian Activity and Clock Genes in Pachycrepoideus vindemmiae: Implications for Field Applications and Circadian Clock Mechanisms of Parasitoid Wasps

Teng

Huo

Zhou

et al. 2023

Insects

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Despite the importance of circadian rhythms in insect behavior, our understanding of circadian activity and the molecular oscillatory mechanism in parasitoid wasp circadian clocks is limited. In this study, behavioral activities expected to be under the control of the endogenous circadian system were characterized in an ectoparasitoid wasp, Pachycrepoideus vindemmiae. Most adults exhibited emergence between late night and early morning, while mating only occurred during the daytime, with a peak at midday. Oviposition had three peaks in the early morning, late day, or early night and late night. Additionally, we identified eight putative clock genes from P. vindemmiae. The quantitative PCR (qPCR) results indicate that most clock genes showed significant rhythmic expressions. Our comparative analysis of clock genes in P. vindemmiae and 43 other parasitoid wasps revealed that none of the wasps possessed the timeless and cry1 genes commonly found in some other insect species, suggesting that the circadian clock system in parasitoid wasps is distinct from that in other non-Hymenoptera insects such as Drosophila. Thus, this study attempted to build the first hypothetical circadian clock model for a parasitoid wasp, thus generating hypotheses and providing a platform for the future functional characterization of P. vindemmiae clock genes as well as those of other parasitoid wasps. Finally, these findings on P. vindemmiae circadian activity will aid the development of effective field release programs for biological control, which can be tested under field conditions.

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Daily locomotor activity of the parasitoid wasp Meteorus pulchricornis (Hymenoptera: Braconidae) that attacks exposed lepidopteran larvae

Cited by 8 publications

References 23 publications

Evaluation of Sensitivity to Phoxim and Cypermethrin in an Endoparasitoid,Meteorus pulchricornis(Wesmael) (Hymenoptera: Braconidae), and Its Parasitization Efficiency Under Insecticide Stress

Evaluation of Sensitivity to Phoxim and Cypermethrin in an Endoparasitoid,Meteorus pulchricornis(Wesmael) (Hymenoptera: Braconidae), and Its Parasitization Efficiency Under Insecticide Stress

Sublethal effects of organophosphorus insecticide phoxim on patch time allocation and oviposition behavior in a parasitoid wasp Meteorus pulchricornis

Circadian Activity and Clock Genes in Pachycrepoideus vindemmiae: Implications for Field Applications and Circadian Clock Mechanisms of Parasitoid Wasps

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