Thermal Activity Thresholds of Parasitoids<i>Aphidius avenae</i>and<i>Aphidius gifuensis</i>(Hymenoptera: Braconidae): Implications for Their Efficacy as Biological Control Agents in the Same Location

Liu, Yingjie; Dong, Jie; Chi, Baojie; Liu, Yong

doi:10.1653/024.099.0418

Cited by 10 publications

(6 citation statements)

References 31 publications

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“…Under natural conditions, there are several important determinants restricting the efficiency of the application of A. gifuensis including high temperature and raining (Liu et al, 2016 ). Generally, the temperatures under greenhouse and field conditions showed irregular cyclic variation daily, and the midday temperature often exceeds 40°C for a period of time.…”

Section: Introductionmentioning

confidence: 99%

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The Potential Coordination of the Heat-Shock Proteins and Antioxidant Enzyme Genes of Aphidius gifuensis in Response to Thermal Stress

Kang

Liu

et al. 2017

Front. Physiol.

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Aphidius gifuensis is one of the most important aphid natural enemies and has been successfully used to control Myzys persicae and other aphid species. High temperature in summer is one of the key barriers for the application of A. gifuensis in the field and greenhouse. In this work, we investigated the biological performance of A. gifuensis and the response of heat-shock proteins and antioxidant enzymes under high temperature. The results showed that A. gifuensis could not survive at 40°C and female exhibited a higher survival in 35°C. Furthermore, the short term exposure to high temperature negatively affected the performance of A. gifuensis especially parasitism efficiency. Under short-term heating, the expression of AgifsHSP, Agifl(2)efl, AgifHSP70, AgifHSP70-4 and AgifHSP90 showed an increased trend, whereas AgifHSP10 initially increased and then decreased. In 35°C, the expressions of Agifl(2)efl, AgifHSP70-4 and AgifHSP90 in female were higher than those in male, whereas the expression of AgifHSP70 exhibited an opposite trend. Besides the HSPs, we also quantified the expression levels of 11 antioxidant enzyme genes: AgifPOD, AgifSOD1, AgifSOD2, AgifSOD3, AgifCAT1, AgifCAT2, AgifGST1, AgifGST2, AgifGST3, AgifGST4 and AgifGST5. We found that the sex-specific expression of AgifSOD2, AgifSOD3, AgifPOD, AgifGST1 and AgifGST3 were highly consistent with sex-specific heat shock survival rates at 35°C. Furthermore, when the temperature was above 30°C, the activities of GST, SOD, CAT and POD were significantly increased; however, there was no significant difference of the CAT activity between the male and female at 35°C. Collectively, all of these results suggested that the protection of thermal damage is coordinated by HSPs and antioxidant enzymes in A. gifuensis. Based on the heat tolerance abilities of many aphid natural enemies, we also discussed an integrated application strategy of many aphid enemies in summer.

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Section: Introductionmentioning

confidence: 99%

“…In previous work, the effect of low temperature (supercooling point and freezing point) on the parasitic potential of A. gifuensis was studied (Liu et al, 2016 ). In this work, we evaluated the biological performance of A. gifuensis under a short heat stress.…”

Section: Introductionmentioning

confidence: 99%

The Potential Coordination of the Heat-Shock Proteins and Antioxidant Enzyme Genes of Aphidius gifuensis in Response to Thermal Stress

Kang

Liu

et al. 2017

Front. Physiol.

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“…The grain aphid, S. miscanthi, is one of the most destructive pests of wheat in China [20,22]. A. gifuensis is the dominant parasitoid species in wheat fields and plays an important role in inhibiting the population growth of wheat aphids [16,21].…”

Section: Discussionmentioning

confidence: 99%

“…Because of the urgent need for sustainable agriculture and for reducing reliance on pesticide, increasing attention has been paid to conservation practices that seek to increase the biological control efficacy in agroecosystems [19,20]. Aphidius gifuensis is widely used in biological control and plays an important role in inhibiting aphid populations [16,21].…”

Section: Introductionmentioning

confidence: 99%

Exogenous Application of a Plant Elicitor Induces Volatile Emission in Wheat and Enhances the Attraction of an Aphid Parasitoid Aphidius gifuensis

Xiao

Liu

et al. 2022

Plants

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It is well known that plant elicitors can induce plant defense against pests. The herbivore-induced plant volatile (HIPV) methyl salicylate (MeSA), as a signaling hormone involved in plant pathogen defense, is used to recruit natural enemies to protect wheat and other crops. However, the defense mechanism remains largely unknown. Here, the headspace volatiles of wheat plants were collected and analyzed by gas chromatography-mass spectrometry (GC−MS), gas chromatography with electroantennographic detection (GC−EAD) and principal component analysis (PCA). The results showed that exogenous application of MeSA induced qualitative and quantitative changes in the volatiles emitted from wheat plants, and these changes were mainly related to Carveol, Linalool, m-Diethyl-benzene, p-Cymene, Nonanal, D-limonene and 6-methyl-5-Hepten-2-one. Then, the electroantennogram (EAG) and Y-tube bioassay were performed to test the physiological and behavioral responses of Aphidius gifuensis Ashmesd to the active volatile compounds (p-Cymene, m-Diethyl-benzene, Carveol) that identified by using GC-EAD. The female A. gifuensis showed strong physiological responses to 1 μg/μL p-Cymene and 1 μg/μL m-Diethyl-benzene. Moreover, a mixture blend was more attractive to female A. gifuensis than a single compound. These findings suggested that MeSA could induce wheat plant indirect defense against wheat aphids through attracting parasitoid in the wheat agro-ecosystem.

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“…This is because warmer autumnal conditions may delay diapause induction, while warm winter conditions will shorten diapause (Bale and Hayward, 2010) leading to increased parasitoid mortality and reduced longevity and fecundity (reviewed in Hance et al 2007). Mirroring the upper thermal limit, the lower thermal limit of parasitoid activity is probably higher than that of their host (Liu et al 2016), and parasitoid species extending their activity window as a response to warmer temperatures may have a limited adaptation potential to cold extremes, as found in Aphidius avenae (Hymenoptera: Braconidae: Aphidiinae) (Alford et al 2020).…”

Section: Direct Impacts Of Climate Change On Parasitoidsmentioning

confidence: 99%

Multiple global change impacts on parasitism and biocontrol services in future agricultural landscapes

Monticelli

Bishop

Desneux

et al. 2021

Advances in Ecological Research

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Parasitoids are a significant mortality factor in the population dynamics of many arthropods involved in key ecological processes such as herbivore-plant and predator-prey interactions.Parasitoids are therefore widely used in biocontrol programs. Global change phenomena influence these natural and anthropocentric roles of parasitoids and here we review the effects of the main drivers and their interplay. Land use intensification modifies landscape structure and elevates agroecosystem loads of fertilizers and pesticides creating risks for parasitism and loss of biocontrol services. Climate change can affect parasitoids directly, affecting physiology and survival, or indirectly via phenological and other effects (plant chemistry, herbivore-induced plant volatiles HIPVs) on their hosts, endosymbionts and plants. Biological invasions have the potential to modify native host-parasitoid systems and elevate risk of novel pest dynamics, requiring restoration of biocontrol. The interplay between these global change drivers may thus exacerbate the overall risk to parasitism in future agricultural landscapes. To make more accurate predictions, future studies could focus on the impact of interacting global change drivers on parasitoids and the biocontrol services they provide. Moreover, host and parasitoid specificity appear to be a key driver in assessing the effects of global change on parasitoids.

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Thermal Activity Thresholds of ParasitoidsAphidius avenaeandAphidius gifuensis(Hymenoptera: Braconidae): Implications for Their Efficacy as Biological Control Agents in the Same Location

Cited by 10 publications

References 31 publications

The Potential Coordination of the Heat-Shock Proteins and Antioxidant Enzyme Genes of Aphidius gifuensis in Response to Thermal Stress

The Potential Coordination of the Heat-Shock Proteins and Antioxidant Enzyme Genes of Aphidius gifuensis in Response to Thermal Stress

Exogenous Application of a Plant Elicitor Induces Volatile Emission in Wheat and Enhances the Attraction of an Aphid Parasitoid Aphidius gifuensis

Multiple global change impacts on parasitism and biocontrol services in future agricultural landscapes

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