Effects of Mineral Oils on Host Selection Behavior of Diaphorina citri

https://doi.org/10.22146/jpti.11873

Mofit Eko Poerwanto(1*), Y. Andi Trisyono(2), Siti Subandiyah(3), Edhi Martono(4), Paul Holford(5), George Andrew Charles Beattie(6)

(1) Departemen Agronomi Universitas Pembangungan Nasional "Veteran"
(2) Fakultas Pertanian Universitas Gadjah Mada
(3) Fakultas Pertanian Universitas Gadjah Mada
(4) Fakultas Pertanian Universitas Gadjah Mada
(5) Center for Plant and Food Science University of Western Sidney
(6) Center for Plant and Food Science University of Western Sidney
(*) Corresponding Author

Abstract


Response of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) on citrus leaves treated with horticultural and agricultural mineral oil (HMO & AMO) was evaluated under laboratory condition in choice and non-choice trials. Combination of HMO and AMO at concentration of 0 up to 2% was applied to citrus leaves. Mineral oil applications significantly reduced the proportion of D. citri stayed on citrus leaves for feeding with the proposed mechanisms: 1) oils covered leaves thus hampered it for releasing volatile compounds, 2) oil film preventing the direct contact of tarsus or palpus to leaf surfaces, and 3) the volatile compounds produced by mineral oils also blended with plant volatiles in the atmosphere and reduced the probability of olfactory receptors capturing the olfactory cues for locating the feeding site. Mineral oils also increased the mortality of D. citri due to the refusion for feeding on the treated citrus leaves. The effect of AMO was more prominent than HMO.

 

Tanggapan Diaphorina citri Kuwayama (Hemiptera: Psyllidae) pada daun jeruk yang diperlakukan dengan minyak mineral (HMO dan AMO) dievaluasi dengan metode pilihan maupun tanpa pilihan di laboratorium. Kombinasi antara HMO dan AMO pada konsentrasi 0% sampai dengan 2% diaplikasikan pada daun jeruk. Minyak mineral secara nyata menurunkan proporsi D. citri hinggap untuk makan pada daun jeruk, yang mungkin disebabkan oleh mekanisme: 1) minyak melapisi daun sehingga tidak mampu melepaskan senyawa volatil, 2) lapisan minyak menghalangi kontak langsung antara tarsus atau palpus pada permukaan daun, dan 3) senyawa volatil dari minyak bercampur dengan volatil tanaman di udara sehingga menurunkan probabilitas reseptor olfaktori menangkap sinyal penanda lokasi inang. Minyak mineral juga meningkatkan mortalitas, akibat dari penolakan makan pada daun jeruk yang diperlakukan. Pengaruh AMO lebih besar dari pada HMO.


Keywords


agricultural mineral oil; citrus; Diaphorina citri; feeding behavior; horticultural mineral oil; host selection; jeruk; perilaku makan; seleksi inang

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References

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DOI: https://doi.org/10.22146/jpti.11873

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