Hot-water quarantine treatment for mangoes from the state of Chiapas, Mexico, infested with Mediterranean fruit fly and Anastrepha serpentina (Wiedemann) (Diptera: Tephritidae).
Sharp J. L., Ouye M. T., Ingle S. J., Hart W. G., Enkerlin H. W. R., Celedonio H. H., Toledo J., Stevens L., Quintero E., Reyes F. J., Schwarz A.
Author Affiliation: Subtropical Horticulture Research Station, ARS, USDA, Miami, FL 33158, USA.
Journal of Economic Entomology 82 : 1663-1666
Abstract : Heated water was used in the development of a quarantine treatment to kill tephritid larval infestations in mango from the state of Chiapas, Mexico. Infested mangoes were immersed for 20-28 min in water at 45.9-47.1°C for laboratory tests. Probit analysis of the data estimated immersion times needed to reach Probit 9 as 67.5 min for Ceratitis capitata and 64.5 min for Anastrepha serpentina. Confirmatory tests resulted in no survivors when 138?443 C. capitata larvae in 13?797 infested mangoes and 111?031 A. serpentina larvae in 12?089 infested mangoes were immersed in water at 45.9-47.1°C for 90 min. Ataulfo mangoes immersed in water at 46.1°C for 90 min were not damaged; however, none was acceptable after 7 days at 23.9°C. Most mangoes (93.3%) were acceptable if immersed in water at 46.1°C for 90 min and refrigerated at 11.1°C for 14 days and 13.3% were acceptable after 7 days at 23-24°C. Only 10% were acceptable if immersed in water at 46.1°C for 90 min and refrigerated at 11.1°C for 21 days.