Inductions of reproduction and population growth in the generalist predator <i>Cyrtorhinus lividipennis</i> (Hemiptera: Miridae) exposed to sub‐lethal concentrations of insecticides

Lu, Weiwei; Xu, Qianyu; Zhu, Jun; Liu, Chen; Ge, Lin-Quan; Yang, Guo-Qing; Liu, Fang

doi:10.1002/ps.4518

Cited by 18 publications

(19 citation statements)

References 47 publications

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“…In BPH, Vg mRNA expression was increased by triazophos . In Cyrtorhinus lividipennis , Vg mRNA expression was also induced by triazophos . Although LC 20 to LC 40 of triazophos all significantly increased the expression level of LsVg , LC 30 induced the highest expression.…”

Section: Discussionmentioning

confidence: 91%

“…23,25,[28][29][30] In Cyrtorhinus lividipennis, Vg mRNA expression was also induced by triazophos. 58 Although LC 20 to LC 40 of triazophos all significantly increased the expression level of LsVg, LC 30 induced the highest expression. Interestingly, the trend of the expression of LsVg induced by different doses of triazophos was consistent with RSV vertical transmission rates, suggesting that triazophos-induced RSV transmission in SBPH may be correlated with LsVg.…”

Section: Wileyonlinelibrarycom/journal/psmentioning

confidence: 92%

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Triazophos‐induced vertical transmission of rice stripe virus is associated with host vitellogenin in the small brown planthopper Laodelphax striatellus

Zhang

et al. 2020

Pest Management Science

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BACKGROUND Rice stripe virus (RSV) is one of the most serious rice diseases in East Asia. The small brown planthopper (SBPH), Laodelphax striatellus, is an economically important rice pest. SBPH transmits RSV horizontally and vertically, resulting in serious rice economic losses. Exposure to sublethal doses of insecticides can induce many physiological and cellular changes in insects. However, the mechanism underlying triazophos‐induced RSV vertical transmission remains unclear. Here, we investigated the role of vitellogenin (Vg) in triazophos‐induced RSV vertical transmission. RESULTS RSV vertical transmission rates were significantly induced by sublethal exposure to triazophos. The transcript abundance of viral RNA3 segment (RNA3) and capsid protein (CP) in the ovaries of SBPH were also significantly increased. Triazophos induced the expression level of Vg in L. striatellus (LsVg) and increased the contents of ovarian protein and fat body protein. Knockdown of Vg significantly reduced the expression levels of LsVg and Vg receptor (LsVgR), and decreased RSV accumulations in the ovaries. Double‐stranded Vg (dsVg)‐mediated down‐regulation could be rescued by exposure to triazophos. Vertical transmission rate of the dsVg‐injected group was significantly decreased compared with the dsGFP‐injected group, and triazophos significantly rescued the RSV vertical transmission rate of the dsVg‐injected group. CONCLUSION Our results indicate that triazophos‐induced RSV vertical transmission is associated with Vg. This work will help us to further elucidate sublethal doses of insecticides‐mediated effects and develop new strategies for pest control. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 91%

Section: Wileyonlinelibrarycom/journal/psmentioning

confidence: 92%

Triazophos‐induced vertical transmission of rice stripe virus is associated with host vitellogenin in the small brown planthopper Laodelphax striatellus

Zhang

et al. 2020

Pest Management Science

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“…On the other hand, Joshi et al (1982) reported that neem seed kernel extracts increased the fecundity of the egg parasitoid, Telenomus remus (Hymenoptera: Platygastridae). We recently reported that the fecundity of C. lividipennis could be induced by sublethal concentrations of triazophos, deltamethrin and imidacloprid (Lu et al 2017). Further studies are needed to explore the mechanism and ecological outcome of insecticide-induced reproduction in C. lividipennis.…”

Section: Discussionmentioning

confidence: 99%

“…Laboratory cultures of C. lividipennis were originally collected from rice fields in Yangzhou (32°23´N, 119°26´E). N. lugens and C. lividipennis were reared on II-You 118 as described by Lu et al (2017). Rice plants and insects were maintained in a growth chamber at (28±2)°C with a 14:10 h (light:dark) photoperiod and 70-80% RH.…”

Section: Rice Insects and Insecticidesmentioning

confidence: 99%

Selectivity and sublethal effects of some frequently-used biopesticides on the predator Cyrtorhinus lividipennis Reuter (Hemiptera: Miridae)

Dai

Zhu

et al. 2019

Journal of Integrative Agriculture

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The green miridbug, Cyrtorhinus lividipennis, is an important predator of the rice brown planthopper, Nilaparvata lugens. In this study, the selective toxicity of seven commercial biopesticides for C. lividipennis was examined under laboratory conditions; abamectin was the most selective to C. lividipennis, followed by matrine and azadirachtin. Veratridine, rotenone, Bacillus thuringiensis and Beauveria bassiana showed less selectivity for C. lividipennis. Subsequently, matrine, abamectin and azadirachtin were selected for sublethal assessments with respect to C. lividipennis due to their high toxicities to N. lugens. C. lividipennis treated with sublethal concentrations (LC 10 and LC 20) of the three biopesticides could distinguish volatiles released from healthy and N. lugens-infested plants indicating that the biopesticides tested did not affect the foraging ability of surviving miridbugs. Azadirachtin decreased the consumption capability of C. lividipennis when the densities of N. lugens were 20, 30, 40 and 50 insects per vial. Sublethal concentration treatment did not impact the pre-oviposition period or egg hatchability of C. lividipennis. However, the fecundity of C. lividipennis exposed to azadirachtin and abamectin increased by 27-41% compared to the untreated individuals. In summary, abamectin or matrine together with C. lividipennis could be considered an effective, sustainable pest management strategy for rice.

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“…Both transcription and protein levels of Vg and VgR were down-regulated by bacterial infection in Apis mellifera (Hymenoptera: Apidae) ( Abbo et al, 2017 ). Intriguingly, the expression of Vgs is dynamic and varies after exposure to different insecticides; e.g., Vg was decreased in a chlorpyrifos-resistant strain and identified as a novel potential resistance-related protein in Frankliniella occidentalis (Thysanoptera: Thripidae), while a drastic increase in the abundance of Vg was observed after exposure of sublethal concentrations of triazophos and deltamethrin in Cyrtorhinus lividipennis Ruter (Hemiptera: Miridae) ( Yan et al, 2015 ; Lu et al, 2017 ). Hence, the identification and characterization of Vg and VgR, as well as the determination of their expression after exposure to sublethal doses of different insecticides, need to be established in each species to better understand the molecular mechanism of the sublethal effects of insecticides on reproduction in insects.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Vitellogenin and Vitellogenin Receptor of Conopomorpha sinensis Bradley and Their Responses to Sublethal Concentrations of Insecticide

Yao

Dong

et al. 2018

Front. Physiol.

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Conopomorpha sinensis Bradley is the dominant borer pest of Litchi chinesis and Euphoria longan. Current management of C. sinensis relies upon insecticide application to adult moths. In addition to the direct mortality induced by insecticides, a sublethal dose of insecticides also affects growth, survival, and reproduction in the exposed insects. Vitellogenin (Vg) and vitellogenin receptor (VgR) are normally identified as essential reproduction-related proteins in insects. In this study, we characterized these two genes from C. sinensis, and investigated their differential responses to sublethal concentrations of insecticide. Cloned CsVg and CsVgR consist of 5391 and 5424-bp open reading frames, which encode proteins of 1796 and 1807 amino acid residues, respectively. The CsVg protein contains the typical vitellogenin, DUF1943 and VWFD domains as other reported lepidopteran Vgs. The CsVgR was characterized as a typical low density lipoprotein receptor with two highly conserved LBD and EGF precursor domains, one hydrophobic transmembrane domain, one cytoplasmic domain, and 13 putative N-glycosylation sites. We next assessed the sublethal effect of four major insecticides on egg-laying in C. sinensis. The toxicity against C. sinensis varied among the insecticides tested, with LC50 values ranging from 0.23 ppm for chlorpyrifos to 20.00 ppm for β-cypermethrin, among which emamectin benzoate (EB) showed a significant negative impact on egg-laying, survival rate, ovarian development, and mating rate of C. sinensis at LC30 doses. Further investigation showed that the transcriptional level of CsVg and CsVgR were impaired in different way at 24, 48, and 72 h after EB exposure, and this result was in agreement with the diminished egg-laying of C. sinensis in the sublethal concentration EB-treated group. A repressed transcription level of CsVgR was observed at 48 h after treatment, suggesting that EB elicits a delayed response in the abundance of CsVgR. These results established different roles of CsVg and CsVgR in response to the sublethal effect of insecticides. CsVg might be a better parameter than CsVgR for assessing the effect of sublethal insecticides on reproduction in C. sinensis.

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Inductions of reproduction and population growth in the generalist predator Cyrtorhinus lividipennis (Hemiptera: Miridae) exposed to sub‐lethal concentrations of insecticides

Cited by 18 publications

References 47 publications

Triazophos‐induced vertical transmission of rice stripe virus is associated with host vitellogenin in the small brown planthopper Laodelphax striatellus

Triazophos‐induced vertical transmission of rice stripe virus is associated with host vitellogenin in the small brown planthopper Laodelphax striatellus

Selectivity and sublethal effects of some frequently-used biopesticides on the predator Cyrtorhinus lividipennis Reuter (Hemiptera: Miridae)

Characterization of Vitellogenin and Vitellogenin Receptor of Conopomorpha sinensis Bradley and Their Responses to Sublethal Concentrations of Insecticide

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