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United States Department of Agriculture

Agricultural Research Service

Research Project: Biology, Control, and Area-Wide Management of Fruit Flies and Other Quarantine Pests

Location: Tropical Crop and Commodity Protection Research

Title: Detection/monitoring of Bactrocera latifrons (Diptera: Tephritidae): assessing the potential of prospective new lures

Authors
item McQuate, Grant
item Jang, Eric
item Siderhurst, Matthew -

Submitted to: Hawaiian Entomological Society Proceedings
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: November 19, 2013
Publication Date: December 10, 2013
Citation: Mcquate, G.T., Jang, E.B., Siderhurst, M. 2013. Detection/monitoring of Bactrocera latifrons (Diptera: Tephritidae): assessing the potential of prospective new lures . Hawaiian Entomological Society Proceedings. 45:69-81.

Interpretive Summary: Bactrocera latifrons is a tephritid fruit fly (Diptera: Tephritidae) which has a host list of 59 plant species from 14 plant families. The host list includes agicultural crops such as tomatoes, peppers, and eggplant. Bactrocera latifrons is of primarily Asian distribution, but its range has expanded through introductions into Hawaii, Okinawa (Japan), Tanzania, and Kenya, and there is risk of introductions into other countries where it does not presently occur, particularly through the movement of infested fruit. Because of the economic importance of B. latifrons, reliable methods are needed to detect, monitor, and control this species. We conducted field trials with a wild B. latifrons population to compare attractiveness of prospective new lures with several attractants that have often been used for detection and/or monitoring of tephritid fruit flies. As in earlier reported studies, our results show higher B. latifrons catch in traps baited with alpha-ionol + cade oil (a bait which only attracts male B. latifrons adult flies) relative to traps baited with protein baits (which catch both male and female flies). Of the protein baits tested, fly response was significantly better to a Solulys AST – based protein bait than to a torula yeast - based protein bait. Beyond this, there was no significant difference in catch among the (wet) torula yeast baited trap and four (dry) alternative attractants (ammonia, biolure, rainbow plug and cucumber volatile plug). This shows that these dry trap alternatives have a comparable ability to catch B. latifrons adults as (wet) traps baited with torula yeast, but are not as effective as traps baited with either Solulys AST or alpha-ionol + cade oil.

Technical Abstract: Bactrocera latifrons is a tephritid fruit fly (Diptera: Tephritidae) which has a host list of 59 plant species from 14 plant families, with over 70% of the host plant species coming from the plant families Solanaceae and Cucurbitaceae. Bactrocera latifrons is of primarily Asian distribution, but its range has expanded through introductions into Hawaii, Okinawa (Japan), Tanzania, and Kenya. The documented introductions into countries outside its native distribution show that this species poses a risk of introductions into other countries where it does not presently occur, particularly through the movement of infested fruit. As with other tephritid fruit fly species, establishment of B. latifrons can have significant economic consequences, including damage and loss of food production, as well as requirements for implementation of costly quarantine treatments to permit export of commodities susceptible to infestation by B. latifrons and inspection of susceptible imported commodities. Because of the economic importance of B. latifrons, reliable methods are needed to detect, monitor, and control this species. We conducted field trials with a wild B. latifrons population, supported by the invasive weed, turkeyberry, Solanum torvum (Solanaceae), to compare attractiveness of prospective new lures with several attractants that have often been used for detection and/or monitoring of tephritid fruit flies. The tests reported here have again shown higher B. latifrons catch in traps baited with alpha-ionol + cade oil relative to traps baited with protein baits. Among the attractants to which both male and female B. latifrons are attracted, fly response is significantly better to a Solulys AST – based protein bait than to other attractants tested. Beyond this, there was no significant difference in catch among the (wet) torula yeast baited trap and four (dry) alternative attractants (ammonia, biolure, rainbow plug and cucumber volatile plug). This shows that these dry trap alternatives have a comparable ability to catch B. latifrons adults as a wet protein bait trap (though not comparable to a Solulys AST – based wet trap).

Last Modified: 9/21/2014
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