Tracing the origins of recent Queensland fruit fly incursions into South Australia, Tasmania and New Zealand

Popa-Báez, Ángel David; Lee, Siu Fai; Yeap, Heng Lin; Westmore, Guy; Crisp, Peter A.; Li, Dongmei; Catullo, Renee A.; Cameron, Emilie; Edwards, Owain; Taylor, Phillip W.; Oakeshott, John G.

doi:10.1007/s10530-020-02422-2

Cited by 14 publications

(16 citation statements)

References 56 publications

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“…Pest genomic databanks have become popular for answering questions around invasions and incursions (Chen et al, 2021;Gloria-Soria et al, 2018;Kelly et al, 2021;Popa-Báez et al, 2021;Schmidt et al, 2020Schmidt et al, , 2021Schmidt et al, , 2019Sherpa et al, 2019). The value provided by these databanks should continue to rise as costs of generating genome-scale data from large numbers of pests continue to decrease and as new genomic methods appropriate for pests are developed (North, McGaughran, & Jiggins, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…Pest genomic databanks provide an increasingly popular means of investigating invasions and incursions (9)(10)(11)(12)(13)(14)(15)(16). The value provided by genomic databanks should continue to rise as costs of generating genome-scale data from large numbers of pests continue to decrease and as new genomic methods appropriate for pests are developed (44).…”

Section: Discussionmentioning

confidence: 99%

“…Pest genomic databanks provide an increasingly popular means of investigating invasions and incursions (Gloria-Soria et al 2018; Schmidt et al 2019; Sherpa et al 2019; Schmidt et al 2020b; Chen et al 2021; Kelly et al 2021; Popa-Báez et al 2021; Schmidt et al 2021c). The value provided by genomic databanks should continue to rise as costs of generating genome-scale data from large numbers of pests continue to decrease and as new genomic methods appropriate for pests are developed (North et al 2021).…”

Section: Discussionmentioning

confidence: 99%

“…While pathways may be easily inferred if incursions are detected on their vessel of entry, incursions that are detected later pose a greater challenge. Recent work using genomic databanks to trace incursions or recently established invasions indicates that these methods can reliably infer the most likely origin out of a set of reference populations (Gloria-Soria et al 2018; Schmidt et al 2019; Sherpa et al 2019; Schmidt et al 2020b; Chen et al 2021; Kelly et al 2021; Popa-Báez et al 2021; Yan et al 2021; Schmidt et al 2021c), and are particularly useful for tracing samples collected beyond border biosecurity. These methods compare genome-wide genetic variation in the incursion or invasion of interest against variation across reference samples, allowing the invasion to be linked to a population or a set of related populations of origin depending on the quality of the databank.…”

Section: Introductionmentioning

confidence: 99%

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Genomic databanks and targeted assays help characterise domestic mosquito incursions

Schmidt

Endersby‐Harshman

Kurucz

et al. 2022

Preprint

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Biosecurity strategies that aim to restrict the spread of invasive pests can profit greatly from knowledge of where new incursions have come from. This knowledge is often difficult to acquire, particularly for incursions that are detected outside their vessel of entry. Genomic databanks have shown recent efficacy for determining origins of individual incursions of pests such as mosquitoes and fruit flies, where genome-wide genetic variation in incursion samples is compared against variation in reference samples. This paper uses genomic databanks to trace and genetically characterise incursions of two species of mosquito (Aedes aegypti and Ae. albopictus) within Australia. We built an Ae. aegypti databank of samples from across its Australian range, and used this to trace a 2021 invasion of Tennant Creek, Northern Territory, to Townsville, Queensland. We used targeted assays to show the invasion did not carry a Wolbachia infection, but had similar mtDNA to wildtype Townsville samples, and thus concluded that the invasion was sourced from an uninfected area within or near Townsville, where the Wolbachia infection has been widespread since 2018. For Ae. albopictus, we traced incursions into the southern Torres Strait Islands from invaded islands, and show how origins of incursions collected in 2021 differed from those collected in 2019. Comparing patterns of genetic relatedness in both species indicated that Tennant Creek was likely invaded by mosquitoes from the same geographical location and are potentially all from the same family, whereas the Torres Strait incursions were all from distinct kinship groups. Our results highlight the value of repeated tracing over years and the utility of targeted assays to improve accuracy of inferences. The specificity of tracing to populations sampled >8 years previously suggest that genomic databanks can remain informative for tracing over years.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genomic databanks and targeted assays help characterise domestic mosquito incursions

Schmidt

Endersby‐Harshman

Kurucz

et al. 2022

Preprint

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“…The Queensland fruit fly, B. tryoni , is a tropical and subtropical pest of fruits and vegetables in Australia and some Pacific Islands (Clarke et al ., 2011), with the potential to spread into more temperate climates (Merkel et al ., 2019; Popa-Báez et al ., 2021). Bactrocera tryoni are mass-reared, sterilized with irradiation, and released as part of area-wide Sterile Insect Technique control programmes (Jessup et al ., 2008).…”

Section: Queensland Fruit Fly (Queensland Australia)mentioning

confidence: 99%

Harnessing thermal plasticity to enhance the performance of mass-reared insects: opportunities and challenges

Sinclair

Sørensen

Terblanche

2022

Bull. Entomol. Res.

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Insects are mass-reared for release for biocontrol including the sterile insect technique. Insects are usually reared at temperatures that maximize the number of animals produced, are chilled for handling and transport, and released into the field, where temperatures may be considerably different to those experienced previously. Insect thermal biology is phenotypically plastic (i.e. flexible), which means that there may exist opportunities to increase the performance of these programmes by modifying the temperature regimes during rearing, handling, and release. Here we synthesize the literature on thermal plasticity in relation to the opportunities to reduce temperature-related damage and increase the performance of released insects. We summarize how and why temperature affects insect biology, and the types of plasticity shown by insects. We specifically identify aspects of the production chain that might lead to mismatches between the thermal acclimation of the insect and the temperatures it is exposed to, and identify ways to harness physiological plasticity to reduce that potential mismatch. We address some of the practical (especially engineering) challenges to implementing some of the best-supported thermal regimes to maximize performance (e.g. fluctuating thermal regimes), and acknowledge that a focus only on thermal performance may lead to unwanted trade-offs with other traits that contribute to the success of the programme. Together, it appears that thermal physiological plasticity is well-enough understood to allow its implementation in release programmes.

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Testing the potential of entomopathogenic nematodes in attract‐and‐kill and autodissemination approaches in the control of Queensland fruit fly, Bactrocera tryoni

Aryal,

Tilden,

Riegler

2024

Pest Management Science

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BACKGROUNDMany studies have demonstrated that tephritid fruit fly larvae are highly susceptible to entomopathogenic nematodes (EPNs) and may become infected as they enter the soil to pupate. However, the susceptibility of adult tephritids and their suitability as EPN targets have been less studied. We performed laboratory assays with 12 Australian EPN strains of Heterorhabditis bacteriophora, Heterorhabditis indica and Heterorhabditis zealandica in adults of the Queensland fruit fly, Bactrocera tryoni. Infective juveniles were delivered in a yeast hydrolysate solution that is attractive to flies. We also measured the flight ability of adults up to 3 days after treatment.RESULTFlies that consumed the EPN‐yeast preparation experienced 72.8–84% mortality. Between 33.5% and 46.2% of EPN‐treated adults were still able to fly before death following treatment, mostly within the first day, thereby contributing to EPN dispersal. Another 31.9–39.9% of EPN‐treated flies that were unable to fly died as a result of EPN treatment. Overall, >65% of flies that died following EPN treatment had visible signs of infection and EPN reproduction.CONCLUSIONOur study is foundational to the development of attract‐and‐kill and autodissemination approaches involving EPNs in fruit fly control. Furthermore, H. indica and H. zealandica strains showed the highest potential as biocontrol agents against adult flies. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Tracing the origins of recent Queensland fruit fly incursions into South Australia, Tasmania and New Zealand

Cited by 14 publications

References 56 publications

Genomic databanks and targeted assays help characterise domestic mosquito incursions

Genomic databanks and targeted assays help characterise domestic mosquito incursions

Harnessing thermal plasticity to enhance the performance of mass-reared insects: opportunities and challenges

Testing the potential of entomopathogenic nematodes in attract‐and‐kill and autodissemination approaches in the control of Queensland fruit fly, Bactrocera tryoni

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