Translator Disclaimer
1 October 2011 Generic Phytosanitary Radiation Treatment for Tephritid Fruit Flies Provides Quarantine Security for Bactrocera latifrons (Diptera: Tephritidae)
Peter A. Follett, Thomas W. Phillips, John W. Armstrong, James H. Moy
Author Affiliations +
Abstract

Bactrocera latifrons (Hendel) (Diptera: Tephritidae) is a quarantine pest of several solanaceous crops and tropical fruits that are treated using irradiation before export from Hawaii to the U.S. mainland. A dose of 150 Gy is approved as a generic irradiation treatment for tephritid fruit flies, but no confirmation of efficacy has been reported for B. latifrons. Dose response of B. latifrons was used to determine the most tolerant life stage and identify a dose that prevents adult emergence. Data indicated doses (plus 95% confidence limits) required to prevent adult emergence of 13.4 (10.0–29.6), 17.5 (14.4–24.8), and 88.1 (68.0–133.8) Gy for eggs, first instars and third instars, respectively. In large-scale confirmatory tests of the most radiotolerant life stage, a radiation dose of 150 Gy applied to B. latifrons late third instars in bell peppers (Capsicum annuum L.) resulted in no survival to the adult stage of 157,112 individuals, a treatment efficacy consistent with Probit 9-level mortality. The relative radiotolerance of melon fly Bactrocera Cucurbitae Coquillet, and B. latifrons also was tested using a diagnostic radiation dose of 30 Gy. In diet, a mean of 6.9% of irradiated B. cucurbitae third instars developed to the adult stage, whereas no B. latifrons third instars developed to adults. In papaya, Carica papaya L., fruit, a mean of 3.3% of irradiated B. cucurbitae third instars developed to the adult stage, whereas 0.5% B. latifrons third instars developed to adults. This report supports the use of a generic radiation dose of 150 Gy in quarantine scenarios to control tephritid fruit flies on fresh commodities.

Peter A. Follett, Thomas W. Phillips, John W. Armstrong, and James H. Moy "Generic Phytosanitary Radiation Treatment for Tephritid Fruit Flies Provides Quarantine Security for Bactrocera latifrons (Diptera: Tephritidae)," Journal of Economic Entomology 104(5), 1509-1513, (1 October 2011). https://doi.org/10.1603/EC11141
Received: 2 May 2011; Accepted: 1 June 2011; Published: 1 October 2011
JOURNAL ARTICLE
5 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top