Differential responses of Bactrocera dorsalis and its parasitoids to headspaces of different varieties of tree-attached mango fruits and the associated chemical profiles

dc.contributor.authorMiano, Raphael Njurai
dc.contributor.authorMohamed, Samira A.
dc.contributor.authorCheseto, Xavier
dc.contributor.authorNdlela, Shepard
dc.contributor.authorBiasazin, Tibebe Dejene
dc.contributor.authorYusuf, Abdullahi Ahmed
dc.contributor.authorRohwer, Egmont Richard
dc.contributor.authorDekker, Teun
dc.date.accessioned2023-07-05T07:11:19Z
dc.date.available2023-07-05T07:11:19Z
dc.date.issued2022-11-14
dc.descriptionDATA AVAILABILITY STATEMENT : The original contributions presented in this study are included in the article/Supplementary material, further inquiries can be directed to the corresponding authors.en_US
dc.description.abstractBactrocera dorsalis (Hendel) is a major pest of fruits and vegetables worldwide with documented losses of up to 100%. Various management techniques including the use of parasitoids, such as Fopius arisanus (Sonan) and Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae) within the context of the Integrated Pest Management (IPM) approach have been deployed for its control. The effectiveness of parasitoids is well understood, but knowledge of the semiochemicals that mediate their behavior, as well as that of the host fruit fly to tree-attached mangoes, is lacking. Here, we first compared the attractiveness of the above-mentioned fruit fly and its parasitoids to volatiles of different treatments (non-infested physiologically mature unripe and ripe mangoes, mangoes newly exposed to ovipositing B. dorsalis, and mangoes on day 7 and day 9 post-oviposition) of tree-attached Kent, Apple, and Haden mango varieties relative to control (clean air). The fruit fly was significantly more attracted to the mango volatiles (up to 93% of responsive insects) compared to the control (clean air). Fopius arisanus was significantly more attracted to mangoes with ovipositing fruit flies (68–76%) while D. longicaudata was significantly more attracted to day 9 post-oviposited mangoes (64–72%) compared to the control. Secondly, we elucidated the headspace volatile profiles of the non-infested and infested tree-attached mangoes using gas chromatography linked to mass spectrometry (GC-MS). The volatiles revealed various types of organic compounds with qualitative and quantitative differences. The majority of the compounds were esters making 33.8% of the total number, followed by sesquiterpenes-16.4%, and monoterpenes-15.4% among others. Most compounds had higher release rates in headspace volatiles of fruit fly-infested mangoes. Lastly, we harvested the infested mangoes and incubated them for puparia recovery. The number of puparia recovered varied according to the mango variety with Apple mango registering 81.7% of the total, while none was recovered from Kent. These results represent the first report of the changes in the headspace components of non-infested and infested tree-attached mangoes and the associated differential responses of the mentioned insects. A follow-up study can reveal whether there is a convergence in olfactomes which is significant when developing baits that selectively attract the fruit fly and not its natural enemies and fill the knowledge gap from an evolutionary ecological perspective.en_US
dc.description.departmentChemistryen_US
dc.description.departmentZoology and Entomologyen_US
dc.description.librarianam2023en_US
dc.description.sponsorshipThe Norwegian Agency for Development Cooperation (NORAD), the Section for research, innovation, and higher education for the project “Combatting Arthropod Pests for better Health, Food and Climate Resilience, International Development Research Centre (IDRC) and the Australian Centre for International Agricultural Research (ACIAR) for the project “Alien invasive fruit flies in Southern Africa: Implementation of a sustainable IPM program to combat their menaces; as well as the Swedish International Development Cooperation Agency (SIDA); the Swiss Agency for Development and Cooperation (SDC); the Federal Democratic Republic of Ethiopia; the Government of the Republic of Kenya and NORAD.en_US
dc.description.urihttp://frontiersin.org/Ecology_and_Evolutionen_US
dc.identifier.citationMiano, R.N., Mohamed, S.A., Cheseto, X., Ndlela, S., Biasazin, T.D., Yusuf, A.A., Rohwer, E. & Dekker, T. (2022) Differential responses of Bactrocera dorsalis and its parasitoids to headspaces of different varieties of tree-attached mango fruits and the associated chemical profiles. Frontiers in Ecology and Evolution 10:1021795. DOI: 10.3389/fevo.2022.1021795.en_US
dc.identifier.issn2296-701X (online)
dc.identifier.other10.3389/fevo.2022.1021795
dc.identifier.urihttp://hdl.handle.net/2263/91272
dc.language.isoenen_US
dc.publisherFrontiers Mediaen_US
dc.rights© 2022 Miano, Mohamed, Cheseto, Ndlela, Biasazin, Yusuf, Rohwer and Dekker. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).en_US
dc.subjectTree-attached mangoen_US
dc.subjectBactrocera dorsalisen_US
dc.subjectFopius arisanusen_US
dc.subjectDiachasmimorpha longicaudataen_US
dc.subjectHeadspaceen_US
dc.subjectSDG-15: Life on landen_US
dc.subjectIntegrated pest management (IPM)en_US
dc.subjectGas chromatography-mass spectrometry (GC-MS)en_US
dc.titleDifferential responses of Bactrocera dorsalis and its parasitoids to headspaces of different varieties of tree-attached mango fruits and the associated chemical profilesen_US
dc.typeArticleen_US

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