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International Journal Of Horticulture, Agriculture And Food Science(IJHAF)

Assessment of Pest Severity and Biological Parameters of Bactrocera minax in Sweet Orange Orchards in Central Nepal

Milan Chauhan , Madhav Koirala , Bamdev Regmi , Rohit Dhakal , Rajendra Regmi , Debraj Adhikari


International Journal of Horticulture, Agriculture and Food science(IJHAF), Vol-3,Issue-6, November - December 2019, Pages 320-327, 10.22161/ijhaf.3.61.2

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Chinese Citrus fly, Bactrocera(Tetradacus) minax(Enderlein), univoltine fruit fly species, is a serious insect pest in Nepal, Bhutan, China, India causing 100% fruit drop in sweet orange (Citrus sinensis L.) orchards in severe case. Four elevation ranges: 1400-1474masl, 1475-1549masl, 1550-1624masl and >1624masl of Ramechhap district were taken for the study of severity of infestation by this fly species in November 2018. A subsequent rearing was conducted at Agriculture and Forestry University, Chitwan, Nepal upto April 2019 to assess various developmental parameters of Bactrocera minax starting from larval stage in infested sweet oranges to the adult flies. Elevation range had the most significant effect (P<0.05) on pest severity (2017/18). Pest severity had strong relationship on elevation of orchards (R2=0.6638). Maximum pest severity (37.12%) was found in 1550-1624masl and minimum (2.90%) in 1400-1474masl. Maximum mean maggots/fruit (6.40±1.25) at 1550-1624masl and minimum (3.95±0.92) at 1475-1549masl were recorded. Post-pupal mortality was higher than pre-pupal mortality. Maximum pre-pupal mortality (11.13±5.24%) at >1624masl and the minimum (2.08±1.46%) at 1550-1624masl were recorded while 1475-1549masl and 1400-1474masl had the respective minimum (25.81±7.59%) and maximum (36.08±9.17%) post-pupal mortality. Most adult flies emerged by 2nd week of March lasting 115 days for adult eclosion. Sex ratio (male: female) was maximum (2.5) at 1400-1474masl and minimum (1.2) at >1624masl. Without feeding an adult fly survived upto 3 days. It can be speculated that besides other meteorological factors, elevation affects geographical distribution of fly and its subsequent biological parameters.

Bactrocera minax, fruit drop, Nepal, sweet orange.

[1] Adhikari, D. (2016). PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST. Retrieved june 1, 2019, from Chinese citrus fly in citrus: Adhikari, D. 2016. Chinese citrus fly in citrus. PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST. Accessed from https://www.plantwise.org/KnowledgeBank/pmdg/20187800001
[2] Adhikari, D., & Joshi, S. L. (2018). An Issue of Sweet Orange Fruit Fly in Sindhuli, Nepal: Possible Management Measures. Workshop on Chinese Citrus Fly (Bactrocera minax). Retrieved April 27th , 2018
[3] Adhikari, D., & Joshi, S. L. (2019). SUNTALAJAT FALFUL KHETIMA FAL KHUHAUNE JHINGA CHINESE CITRUS FLY (Bactrocera minax) Book in Nepali language. Sindhuli, Nepal: Prime Minister Agriculture Modernization Project. Project Implementation Unit, Junar Superzone.
[4] Adhikari, D., Joshi, S. L., Thapa, R. B., J., J. D., & G.C., Y. D. (2019). Status and Management of Fruit fly in Nepal. National Plant Protection Workshop. March 03, 2019. Kathmandu, Nepal
[5] Allwood, A. J., Chinajariyawong, A., Drew, R., Hamacek, E. L., Hancock, D. L., Hengsawad, C., . . . Vijaysegaran, S. (1999). Host plant records for fruit flies (Diptera: Tephritidae) in South East Asia. The Raffles Bulletin of Zoology, 47, 1-92.
[6] Dong, Y. C., Wang, Z. J., Clarke, A. R., Pereira, R., Desneux, N., & Niu, C. Y. (2013). Pupal diapause development and termination is driven by low temperature chilling in Bactrocera minax. Journal of Pest Science, 86(3), 429-436. DOI:10.1007/s10340-013-0493-y
[7] Dorji, C., Clarke, A. R., Drew, R. A., Fletcher, B. S., Loday, P., Mahat, K., . . . Romig, M. C. (2006). Seasonal phenology of Bactrocera minax (Diptera: Tephritidae) in western Bhutan. Bulletin of Entomological Research, 96(5), 531-538. DOI:10.1079/BER2006455
[8] Drew, R. A., Dorji, C., Romig, M. C., & Loday, P. (2006). Attractiveness of Various Combinations of Colors and Shapes to Females and Males of Bactrocera minax (Diptera:Tephritidae) in a Commercial Mandarin Grove in Bhutan. Journal of Economic Entomology, 99(5), 1651-1656. DOI:10.1093/jee/99.5.1651
[9] Elevation finder. (2018, Nov. 22). Elevation finder. Retrieved Nov. 22, 2018, from Elevation finder: https://www.freemaptools.com/elevation-finder.htm
[10] Hulthen , A. D., & Clarke, A. R. (2006). The influence of soil type and moisture on pupal survival of Bactrocera tryoni (Froggatt) (Diptera: Tephritidae). Australian Journal of Entomology, 45(1), 16-19. DOI:10.1111/j.1440-6055.2006.00518.x
[11] Li, Z., Chambi, C., Du, T., Huang, C., Wang, F., Zhang, G., . . . Kayeke, M. J. (2019). Effects of Water Immersion and Soil Moisture Content on Larval and Pupal Survival of Bactrocera minax (Diptera: Tephritidae). Insects, 10(5), 138. DOI:10.3390/insects10050138
[12] myRepublica. (2018, May 1). myRepublica. Retrieved from https://myrepublica.nagariknetwork.com/news/citrus-fly-infestation-worries-junar-farmers/
[13] NCRP. (2014). Annual Report 2013-2014. National Citrus Research Program, Paripatle, Dhankuta, Nepal.
[14] Van Schoubroeck, F. (1999). Learning to fight a fly: developing citrus IPM in Bhutan. Wageningen, Netherlands: PhD thesis, Wageningen University and Research Centre. Retrieved from https://library.wur.nl/WebQuery/wurpubs/63028
[15] Wang, X. J., & Luo, L. (1995). Research progress in the Chinese citrus fly. Entomological Knowledge.
[16] Xia, Y., Ma, X., Hou, B., & Ouyang, G. (2018). A Review of Bactrocera minax(Diptera: Tephritidae) in China for the purpose of Safeguarding. Advances in Entomology, 6(2), 35-61. DOI:10.4236/ae.2018.62005
[17] Zhang, Y. A. (1989). Citrus fruit flies of Sichuan Province(China). OEPP/EPPO Bulletin, 19(4), 649-654. DOI:10.1111/j.1365-2338.1989.tb01154.x