Formosan Entomologist (2006) 26, 357-367

Ren-Wei Lin, Chiou-Nan Chen, Wen-Jer Wu and Cheng-Jen Shih (2006)
[Impact of the removal of a noncommercial crop from an orchard on the population management of the Oriental fruit fly (Bactrocera dorsalis (Hendel))]
Formosan Entomologist 26 (4), 357-367
Abstract: We removed a noncommercial crop (guava trees) from an orchard to appraise its impact on the population management of the Oriental fruit fly (Bactrocera dorsalis (Hedel)) in Ilan, Taiwan. The improved McPhail traps baited with a poisoned methyl eugenol (ME) board or Nu-lure were used in the orchard to monitor the fruit fly population. Results showed that control efficiency reached 95% by 1 and 2 years after guava tree removal. Data analysis indicated that before destruction of the guava trees, trap attractant and host plant species had a significant effect on the overall number of flies captured (p < 0.001) with seasonal variations (p < 0.05). After removal of the guava trees from the orchard, the number of flies captured in different hosts decreased and did not significantly differ from each other (p = 0.78). There was a high correlation between the number of male flies (X) captured by ME and the number of females (Y) captured by the Nu-Lure traps (r > 0.74, p < 0.01). Preliminary analysis revealed that these variables can be expressed as lnY[hat] = 0.10 - 0.29 lnX + 0.15 lnX² (R² = 0.70, p < 0.001).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Wen-Jer Wu, Chiou-Nan Chen

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bactrocera dorsalis	Guava (Psidium)	Taiwan