First record of the invasive spotted wing Drosophila infesting berry crops in Africa

Journal of Pest Science, Год журнала: 2020, Номер 94(2), С. 261 - 271

Опубликована: Сен. 18, 2020

Язык: Английский

---

Exploring future applications of the apiculate yeast Hanseniaspora

Critical Reviews in Biotechnology, Год журнала: 2023, Номер 44(1), С. 100 - 119

Опубликована: Фев. 23, 2023

As a metaphor, lemons get bad rap; however the proverb '

Язык: Английский

---

Chemical and Electrophysiological Characterisation of Headspace Volatiles from Yeasts Attractive to Drosophila suzukii

Journal of Chemical Ecology, Год журнала: 2024, Номер 50(11), С. 830 - 846

Опубликована: Май 1, 2024

Abstract Chemical control of Drosophila suzukii (Diptera: Drosophilidae) based on the use insecticides is particularly challenging as insect attacks ripening fruits shortly before harvest. An alternative strategy may rely yeasts phagostimulants and baits, applied canopy attract-and-kill formulations. The aim this research was to identify most attractive among six yeast species for D. : Saccharomyces cerevisiae , Hanseniaspora uvarum Clavispora santaluciae Saccharomycopsis vini Issatchenkia terricola Metschnikowia pulcherrima . volatile profile C described first time. Behavioural experiments identified H. S. yeasts. characterization headspace volatiles using direct (DHS) solid-phase microextraction (SPME) revealed several strain-specific compounds. With DHS injection, 19 were characterised, while SPME 71 compounds constituting headspace. Both analyses terpenoids including β-ocimene, citronellol, ( Z )-geraniol (nerol), geranial distinct constituents further investigated closed-loop stripping analysis (CSLA) electroantennography. Out 14 quantified by CSLA, ethyl acetate, isoamyl β-myrcene, benzaldehyde linalool detected antennae might generate strong attractiveness uvarum. Our results highlight a attraction various associated with both flies their habitat demonstrate how different sampling methods can impact compound characterization. It remains be demonstrated whether special adaptations certain what extent metabolites causing are interchangeable.

Язык: Английский

---

Insecticidal and oviposition deterrent effects of essential oils of Baccharis spp. and histological assessment against Drosophila suzukii (Diptera: Drosophilidae)

Scientific Reports, Год журнала: 2021, Номер 11(1)

Опубликована: Фев. 17, 2021

Abstract The diverse flora of the Atlantic Forest is fertile ground for discovering new chemical structures with insecticidal activity. presence species belonging to genus Baccharis particular interest, as these have shown promise in pest management applications. objective this study chemically identify constituents expressed leaves seven ( B. anomala DC., calvescens mesoneura milleflora oblongifolia Pers., trimera (Less) DC. and uncinella DC.) evaluate toxicological morphological effects caused by essential oils (EOs) on larvae adults Drosophila suzukii (Diptera: Drosophilidae). Chemical analysis using gas chromatography-mass spectrometry (GC–MS) indicated that limonene was main common constituent all species. This isolation, well EOs , mortality over 80% D. at a discriminatory concentration 80 mg L −1 bioassays ingestion topical application. These results are similar effect spinosyn-based synthetic insecticides (spinetoram 75 ) 120 h after exposure. Limonene from had lowest LC 50 90 values relative spinosyn azadirachtin (12 g both bioassays. However, they showed same time toxicity spinetoram when applied (LT ranging 4.6 8.7 h) application bioassay. In olfactometry tests, 92% females repellent behavior exposed limonene. Likewise, significantly reduced number eggs artificial fruits (≅ 7.6 fruit ), differing control treatment water (17.2 acetone (17.6 ). According histological analyses, L3 physiological alterations deformations exposure treatments containing limonene, which resulted high larval, pupal, adult mortality. view results, their isolated constituent, proved be promising alternatives developing bioinsecticides manage .

Язык: Английский

---

Diversity and Functions of Yeast Communities Associated with Insects

Microorganisms, Год журнала: 2021, Номер 9(8), С. 1552 - 1552

Опубликована: Июль 21, 2021

Following the concept of holobiont, insect-microbiota interactions play an important role in insect biology. Many examples host-associated microorganisms have been reported to drastically influence biological processes such as development, physiology, nutrition, survival, immunity, or even vector competence. While a huge number studies on insect-associated microbiota focused bacteria, other microbial partners including fungi comparatively neglected. Yeasts, which establish mostly commensal symbiotic relationships with their host, can dominate mycobiota certain insects. This review presents key advances and progress research field highlighting diversity yeast communities associated insects, well impact life-history traits, behavior.

Язык: Английский

---

Factors influencing oviposition behaviour of the invasive pest, Drosophila suzukii, derived from interactions with other Drosophila species: potential applications for control

Pest Management Science, Год журнала: 2023, Номер 79(11), С. 4132 - 4139

Опубликована: Июль 30, 2023

Drosophila suzukii (Matsumura) or spotted wing is a worldwide invasive pest of soft- and stone-fruit production. Female D. lay their eggs in ripening fruit the hatched larvae damage from inside, rendering it unmarketable causing significant economic loss. Current methods to reduce population field primarily rely on chemical insecticides which are not sustainable long-term solution increase risk resistance developing. Several studies demonstrate that when encounter coexist with other food source, this usually disadvantage suzukii, leading reduced oviposition increased larval mortality. These effects have potential be exploited management perspective. In review we summarise recent research articles focusing interspecific interactions between species aimed at understanding how drives behaviour. Potential semiochemical microbiome impacts postulated as determinants Development control practices reducing populations deterring them laying by utilising factors drive behaviour discussed. © 2023 The Authors. Pest Management Science published John Wiley & Sons Ltd behalf Society Chemical Industry.

Язык: Английский

---

Fruit volatiles mediate differential attraction of Drosophila suzukii to wild and cultivated blueberries

Journal of Pest Science, Год журнала: 2021, Номер 94(4), С. 1249 - 1263

Опубликована: Янв. 19, 2021

Язык: Английский

---

Behavioral manipulation of Drosophila suzukii for pest control: high attraction to yeast enhances insecticide efficacy when applied on leaves

Pest Management Science, Год журнала: 2021, Номер 78(3), С. 896 - 904

Опубликована: Окт. 30, 2021

The invasive pest, Drosophila suzukii attacks fresh soft-skinned fruit. Broad-spectrum insecticides are implemented for control but there is a need to reduce environmental risks and insecticide residues on fruits. Hanseniaspora uvarum yeast frequently found ripe fruits associated with D. suzukii. We aim exploit the ecological association attraction of H. by developing an attract-and-kill strategy, spray-application canopy not therefore investigated attraction, egg-laying mortality when exposed insecticidal yeast-based formulations.Hanseniaspora strongly attracted applied leaves grapevine, Vitis vinifera. Notably, this attractiveness was competitive grape berries that were susceptible infestation. Moreover, adding enhanced efficacy formulations against Flies treated yeast-insecticide showed higher laid lower number eggs compared flies alone. In wind tunnel, all treatments containing alone or in combination insecticides, caused similar upwind flight landing at odor source, which provides evidence addition did yeast.Hanseniaspora can be used manipulate behavior attracting formulations. Yeast improves effectiveness, suggesting sprays covering only, could fruit without compromising management efficacy.

Язык: Английский

---

Yeast and fruit fly mutual niche construction and antagonism against mould

Functional Ecology, Год журнала: 2022, Номер 36(7), С. 1639 - 1654

Опубликована: Апрель 9, 2022

Abstract A goal in insect–microbe ecology is to understand the mechanisms regulating species associations and mutualistic interactions. The spotted wing drosophila Drosophila suzukii develops ripening fruit, unlike other drosophilids that typically feed on overripe associated with yeast Hanseniaspora uvarum . We hypothesized D. H. engage niche construction leading a relation, facilitating exploitation of fruit berries as larval substrate. show proliferates both ripe unripe raspberries, mediates attraction larvae adult flies, enhances egg‐laying mated females sufficient food substrate support development. Moreover, suppresses antagonistic grey mould, Botrytis cinerea collaboration D larvae, produces less ethanol than baker's yeast. thus creates favourable conditions for development, which susceptible mould. , hand, vectors suitable substrates such where feeding activity growth Larval also helps suppress B. otherwise outcompetes raspberry, absence fly larvae. In conclusion, development berries, promotes dispersal berries. Yeast modify their shared habitat reciprocal mutual interaction. Read free Plain Language Summary this article Journal blog.

Язык: Английский

---

Canopy strip applications of Hanseniaspora uvarum combined with spinosad reduce insecticide use without compromising Drosophila suzukii control in cherry

Crop Protection, Год журнала: 2024, Номер 186, С. 106868 - 106868

Опубликована: Июль 31, 2024

Drosophila suzukii, a significant sweet cherry pest, has traditionally been controlled using broad-spectrum insecticides. Various yeasts are known to attract and stimulate flies feed on yeast-covered surfaces. We investigated an attract-and-kill formulation based the yeast Hanseniaspora uvarum insecticide spinosad, applied 80–100 cm wide canopy strip at 1-m height in six field trials across Italy Germany manage D. suzukii infestation cherry. The formulation, dose ranging from 21.6 34.9 g per hectare of according training system, decreased percentage infested cherries by 41.74–84.26% average number deposited eggs 79.51–95.56%. efficacy was comparable conventional application spinosad alone, which 84 216 hectare. 53.00–92.00% reduced 77.10–92.96%. technique led reduction up 90% use targeting limited section tree. targeted approach not only minimized quantities hectare, but also resulted lower residue levels treated fruits.

Язык: Английский

---