Fruit Fly in a Challenging Environment: Impact of Short-Term Temperature Stress on the Survival, Development, Reproduction, and Trehalose Metabolism of Bactrocera dorsalis (Diptera: Tephritidae)

Yu, Chun; Zhao, Runa; Zhou, Wei; Pan, Yingna; Tian, Hanqin; Yin, Zhengyan; Chen, Wenlong

doi:10.3390/insects13080753

Cited by 9 publications

(6 citation statements)

References 45 publications

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“…It is widely recognised that high temperatures have a negative effect on conidial germination and viability [ 71 , 73 , 74 ] but the decrease in fungal efficiency at high temperatures is also possibly associated with increased stress responses of fungal isolates [ 75 , 76 ] or due to the thermal response of the insect host [ 77 , 78 ], rather than conidia germination and fungal growth rate directly. The current study assessed the virulence towards third-instar larvae of Queensland fruit fly.…”

Section: Discussionmentioning

confidence: 99%

Metarhizium spp. isolates effective against Queensland fruit fly juvenile life stages in soil

Prince,

McKinnon,

Leemon

et al. 2024

PLoS ONE

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Queensland fruit fly, Bactrocera tryoni, Froggatt (Diptera: Tephritidae) is Australia’s primary fruit fly pest species. Integrated Pest Management (IPM) has been adopted to sustainably manage this polyphagous species with a reduced reliance on chemical pesticides. At present, control measures are aimed at the adult stages of the fly, with no IPM tools available to target larvae once they exit the fruit and pupate in the soil. The use of entomopathogenic fungi may provide a biologically-based control method for these soil-dwelling life stages. The effectiveness of fungal isolates of Metarhizium and Beauveria species were screened under laboratory conditions against Queensland fruit fly. In bioassays, 16 isolates were screened for pathogenicity following exposure of third-instar larvae to inoculum-treated vermiculite used as a pupation substrate. The best performing Metarhizium sp. isolate achieved an average percentage mortality of 93%, whereas the best performing Beauveria isolate was less efficient, with an average mortality of 36%. Susceptibility to infection during different development stages was investigated using selected fungal isolates, with the aim of assessing all soil-dwelling life stages from third-instar larvae to final pupal stages and emerging adults. Overall, the third larval instar was the most susceptible stage, with average mortalities between 51–98% depending on the isolate tested. Moreover, adult mortality was significantly higher when exposed to inoculum during pupal eclosion, with mortalities between 56–76% observed within the first nine days post-emergence. The effect of temperature and inoculum concentration on insect mortality were assessed independently with candidate isolates to determine the optimum temperature range for fungal biological control activity and the rate required for application in field conditions. Metarhizium spp. are highly efficacious at killing Queensland fruit fly and have potential for use as biopesticides to target soil-dwelling and other life stages of B. tryoni.

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Section: Discussionmentioning

confidence: 99%

Metarhizium spp. isolates effective against Queensland fruit fly juvenile life stages in soil

Prince,

McKinnon,

Leemon

et al. 2024

PLoS ONE

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“… Huang et al (2020) reported that the period of development of all stages of Zeugodacus tau (Walker) (Diptera: Tephritidae) and Zeugodacus cucuribitae (Coquillett) (Diptera: Tephritidae) increased as the applied low-temperature decreased. Furthermore, Yu et al (2022) found that at low temperatures, both the egg and larval stages of Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) developed significantly longer than the control group, with the egg stage prolonging by more than twice at 0°C. Similarly, the egg and larval stages of Galeruca daurica Joannis (Coleoptera: Chrysomelidae) developed for longer periods at low temperatures ( Li et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Effects of short-term extreme temperature treatment on the development and reproductive capacity of Encarsia formosa

Li,

Zhang,

Chen

et al. 2023

Front. Physiol.

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Encarsia formosa is a natural enemy of the invasive pest Bemisia tabaci and is known to be a dominant parasitic. The frequency and magnitude of climate extremes, particularly temperature extremes, have increased, which has put insect populations at risk. However, the effects of temperature extremes on E. formosa are not well understood. To examine the impact of short-term extreme temperature exposure on the development and reproduction of E. formosa, eggs, larvae, pupae, and adults were exposed to high/low temperature treatments (HLT25, HLT50, LLT25, and LLT50). Our findings indicate that the pupal stage of E. formosa exhibited the strongest tolerance to both heat and cold, while adults exhibited a weaker tolerance. The shortest egg-to-adult development period of 12.65 days was observed in E. formosa exposed to HLT50 treatment during the egg-larval stage. The parasitism peak of the adult stage was delayed by 1–6 days after exposure to extreme temperatures during the egg-larval stage. Conversely, the parasitism peak was advanced by 1–3 days after exposure to extreme temperatures during the pupal and adult stages. The eclosion rate, total parasitism, eclosion rate of the F1 generation, and adult longevity of the F1 generation were lower in the treatment groups than in the control groups. The F1 generation’s development period was prolonged to 15.49 and 15.19 days after exposure to HLT25 and HLT50 treatments, respectively, during the egg-larval stage. The F1 generation’s development period was shortened to 13.33 days after exposure to LLT50 treatment during the pupal stage. Male individuals appeared in the F1 generation after exposure to HLT50 treatment during the pupal stage, with females accounting for only 56.38%. Our results demonstrate that short-term exposure to extreme temperatures has detrimental effects on the growth and reproduction of E. formosa. In field biocontrol against E. formosa, the release of E. formosa should be avoided as much as possible when the ambient temperature is higher than 35°C or lower than 0°C. During extreme temperature conditions, timely supplementation and release of E. formosa population, along with ventilation and cooling in greenhouse facilities during summer, are necessary for better pest control efficacy.

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“…B. dorsalis has been listed among quarantine targets, and strict quarantine measures on fruit import and export have been implemented in many countries and regions [2]. It has developed various adaptive mechanisms that have aided its successful establishment in both native and invasive habitats [3,4]. Due to the cryptic feeding habits of its larval stages and its pupation in soil, the management strategies of B. dorsalis are mainly focused on the control of adults [5].…”

Section: Introductionmentioning

confidence: 99%

The Discovery of the Potential Attractive Compounds of Bactrocera dorsalis (Hendel)

Chen,

Cao,

Zou

et al. 2024

Horticulturae

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Bactrocera dorsalis (Hendel) (B. dorsalis) is an important agricultural invasive pest that causes significant economic losses in tropical and subtropical fruit and vegetable crops. In this study, the proteins related to the sense of smell and taste of B. dorsalis, such as OBP, PBP, OR, IR, SNMP and CSP, were screened based on B. dorsalis transcriptome data. By integrating the compounds that were reported to be attractive to B. dorsalis, similar compounds of hydrocarbon compounds were obtained. Molecular docking was used to predict the binding between the similar compounds and the OBP, PBP, OR, IR, SNMP and CSP proteins. Network pharmacology was used to screen the potentially attractive compounds, and ecological experiments with B. dorsalis were finally conducted to verify the effect of these potentially attractive compounds on B. dorsalis. The results showed that the G protein-coupled receptor [BR: KO04030] and ion channel [BR: KO04040] pathways were closely related to the odor tropism of B. dorsalis. A total of 84 compounds, such as mitemcinal, exemestane and midecamycin, have potential binding effects on the B. dorsalis odor receptor proteins. The results of the ecological experiments showed that 1 mg/mL and 0.1 mg/mL 19-norandrostenedione, 1 mg/mL progesterone compounds was significantly attractive to B. dorsalis males, while 0.1 mg/mL exemestane was significantly attractive to B. dorsalis females. In this study, network pharmacology technology was used to discover the potential attractive compounds for B. dorsalis, which is important for the development and subsequent prevention and control of B. dorsalis. It can provide a reference in improving the success rates of clinical trials of new pest control products and in reducing the time and cost of drug development.

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Fruit Fly in a Challenging Environment: Impact of Short-Term Temperature Stress on the Survival, Development, Reproduction, and Trehalose Metabolism of Bactrocera dorsalis (Diptera: Tephritidae)

Cited by 9 publications

References 45 publications

Metarhizium spp. isolates effective against Queensland fruit fly juvenile life stages in soil

Metarhizium spp. isolates effective against Queensland fruit fly juvenile life stages in soil

Effects of short-term extreme temperature treatment on the development and reproductive capacity of Encarsia formosa

The Discovery of the Potential Attractive Compounds of Bactrocera dorsalis (Hendel)

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