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Forest Fragments as Barriers to Fruit Fly Dispersal: Anastrepha (Diptera: Tephritidae) Populations in Orchards and Adjacent Forest Fragments in Puerto Rico
Environmental Entomology
  • David A. Jenkins, USDA-ARS Tropical Agriculture Research Station
  • Paul E. Kendra, USDA-ARS Subtropical Horticultural Research Station
  • Skip Van Bloem, University of Puerto Rico
  • Stefanie Whitmire, University of Puerto Rico
  • Russ Mizell, III, University of Florida
  • Ricardo Goenaga, USDA-ARS Tropical Agriculture Research Station
Document Type
Article
Publication Date
4-1-2013
Publisher
Oxford University Press
Disciplines
Abstract

McPhail-type traps baited with ammonium acetate and putrescine were used to monitor populations of Anastrepha obliqua (Macquart) and Anastrepha suspensa(Loew) in two orchards with hosts of these flies (mango, Mangifera indica L., and carambola, Averrhoa carambola L.), as well as in forest fragments bordering these orchards. Contour maps were constructed to measure population distributions in and around orchards. Our results indicate that Anastrephapopulations are focused around host fruit in both space and time, that traps do not draw fruit flies away from hosts, even when placed within 15 m of the host, and that lures continue to function for 6 mo in the field. The contour mapping analyses reveal that populations of fruit flies are focused around ovipositional hosts. Although the trapping system does not have a very long effective sampling range, it is ideal, when used in combination with contour analyses, for assessing fine-scale (on the order of meters) population distributions, including identifying resources around which fly populations are focused or, conversely, assessing the effectiveness of management tools. The results are discussed as they pertain to monitoring and detecting Anastrepha spp. with the McPhail-type trap and ammonium acetate and putrescine baiting system and the dispersal of these flies within Puerto Rico.

Citation Information
David A. Jenkins, Paul E. Kendra, Skip Van Bloem, Stefanie Whitmire, Russ Mizell, Ricardo Goenaga, Forest Fragments as Barriers to Fruit Fly Dispersal: Anastrepha (Diptera: Tephritidae) Populations in Orchards and Adjacent Forest Fragments in Puerto Rico, Environmental Entomology, Volume 42, Issue 2, 1 April 2013, Pages 283–292, https://doi.org/10.1603/EN12251