| Title: | A field test on the effectiveness of male annihilation technique against Bactrocera dorsalis (Diptera: Tephritidae) at varying application densities |
| Author(s): | Manoukis NC; Vargas RI; Carvalho L; Fezza T; Wilson S; Collier T; Shelly TE; |
| Address: | "United States Department of Agriculture- Agricultural Research Service, Daniel K. Inouye US Pacific Basin Agricultural Research Center, Hilo, HI, United States of America. United States Department of Agriculture- Animal Plant Health Inspection Service, Waimanalo, HI, United States of America" |
| DOI: | 10.1371/journal.pone.0213337 |
| ISSN/ISBN: | 1932-6203 (Electronic) 1932-6203 (Linking) |
| Abstract: | "Male Annihilation Technique (MAT) is a key tool to suppress or eradicate pestiferous tephritid fruit flies for which there exist powerful male lures. In the case of Bactrocera dorsalis (Hendel), a highly invasive and destructive species, current implementations of MAT utilize a combination of the male attractant methyl eugenol (ME) and a toxicant such as spinosad ('SPLAT-MAT-ME') applied at a high density with the goal of attracting and killing an extremely high proportion of males. We conducted direct comparisons of trap captures of marked B. dorsalis males released under three experimental SPLAT-MAT-ME site densities (110, 220, and 440 per km2) near Hilo, Hawaii using both fresh and aged traps to evaluate the effectiveness of varying densities and how weathering of the SPLAT-MAT-ME formulation influenced any density effects observed. Counterintuitively, we observed decreasing effectiveness (percent kill) with increasing application density. We also estimated slightly higher average kill for any given density for weathered grids compared with fresh. Spatial analysis of the recapture patterns of the first trap service per replicate x treatment reveals similar positional effects for all grid densities despite differences in overall percent kill. This study suggests that benefits for control and eradication programs would result from reducing the application density of MAT against B. dorsalis through reduced material use, labor costs, and higher effectiveness. Additional research in areas where MAT programs are currently undertaken would be helpful to corroborate this study's findings" |
| Keywords: | Animals Anti-Infective Agents/pharmacology Eugenol/*pharmacology Female Fruit/*parasitology *Insect Control Male Pheromones/*pharmacology Tephritidae/*drug effects; |
| Notes: | "MedlineManoukis, Nicholas C Vargas, Roger I Carvalho, Lori Fezza, Thomas Wilson, Shannon Collier, Travis Shelly, Todd E eng 2019/03/09 PLoS One. 2019 Mar 8; 14(3):e0213337. doi: 10.1371/journal.pone.0213337. eCollection 2019" |
