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 Tropical Crop and Commodity Protection Research: Hilo, HI
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                        Acebes-Doria, Angelita
                                    Cha, Dong
                                    Follett, Peter
                                    Johnson, Melissa
                                    Liang, Peishih
                                    Manoukis, Nicholas
                                    Siderhurst, Matthew
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ARS Home Pacific West Area Hilo, Hawaii Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center Tropical Crop and Commodity Protection Research Research Publications at this Location





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Research Project: Detection, Control and Area-wide Management of Fruit Flies and Other Quarantine Pests of Tropical/Subtropical Crops Location:
                                Tropical Crop and Commodity Protection Research Title:   Author  item
                                            Manoukis, Nicholasitem
                                            Jang, Ericitem
                                            DOWELL, ROBERT - California Department Of Agriculture
  Submitted to: Entomologia Experimentalis et Applicata
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 9/14/2016
                                    Publication  Date: 2/7/2017
                                    Citation: Manoukis, N., Jang, E.B., Dowell, R.V. 2017. Survivorship of male and female Bactrocera dorsalis in the field and the effect of male annihilation technique. Entomologia Experimentalis et Applicata. 162:243-250.Interpretive Summary: This paper describes the results of experiments that compare two numbers of lure/insecticide spots per unit area with a control of no treatment for killing invading fruit flies. If the number of spots could be reduced with the same killing  ability, then materials, labor, and time could be spared without compromising safety. Surprisingly, the results suggest that a lower number of spots per unit area was more effective than the higher number at killing flies. We also have derived estimates of how well these flies survive in the field.
                                Technical Abstract: Male Annihilation Technique (MAT) is a key component of the Oriental fruit fly Bactrocera dorsalis Hendel (Diptera: Tephritidae) management because of the “strong” attraction of males to the lure methyl eugenol. The optimal application density for MAT has not been investigated for this economically important pest species. We tested the effect of two levels of MAT application density compared to a no MAT control on the daily survivorship of male and female Bactrocera dorsalis estimated by mark-release-recapture (MRR) using a 1 km2 passive sampling network. Estimated daily survivorship from two separate MRR trials under control (no MAT) conditions was 0.751 for males and 0.948 for females. Male survivorship was similar under control (no MAT) and high application density (256 spots/km2; daily survivorship 0.704). However, estimated male survivorship was significantly lower under the low application density (100 spots/km2; daily survivorship 0.211). A similar pattern was observed in estimated female survivorship, with a significant reduction in survivorship under the low rate compared with control and high application density (low density estimated survivorship 0.652; high density 0.881). The results suggest that a lower application density may be more effective against Bactrocera dorsalis than the high application density. A lower application density for effective MAT would benefit growers and the public with respect to management of B. dorsalis through reduced labor and material costs, limiting potential environmental impacts, and increased logistical simplicity finding application sites in urban environments.


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