Irradiation as a potential phytosanitary treatment for the mango pulp weevil Sternochetus frigidus (Fabr.) (Coleoptera: Curculionidae) in Philippine super mango

Issue Date

6-2013

Abstract

Irradiation was explored as a method of quarantine disinfestation treatment for the mango pulp weevil Sternochetus frigidus (Fabr.). S. frigidus is an important quarantine pest preventing the export of mangoes from the Philippines to countries with strict quarantine regulations. Mangoes obtained from Guimaras Island are exempt from this ban as they are certified to be free from seed weevil and pulp weevil infestation. In the dose-response tests, S. frigidus larvae, pupae and adults in mangoes were irradiated at target doses of 25, 50, 75, 100, 150, 300 and 400 Gy. The number of eggs laid by adult females decreased with increasing dose. Treatment with irradiation doses of >75 Gy resulted in sterility in adults developing from larvae and pupae while doses of >100 Gy resulted in sterility in irradiated adults. The adult was the most tolerant stage based on sterility or prevention of adult reproduction. Significant differences were observed in adult longevity among treatment doses in S. frigidus, but none between sexes and in the interaction between dose and sex.

Source or Periodical Title

Philippine Agricultural Scientist, The (Formerly: The Philippine Agriculturist)

ISSN

0031-7454

Volume

96

Issue

2

Page

172-178

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Frequency

quarterly

Physical Description

illustrations, graphs, tables, references

Language

English

Subject

disinfestations, mango pulp weevil, postharvest phytosanitary treatment, quarantine pest, Sternochetus frigidus

En – AGROVOC descriptors

CURCULIONIDAE; MANGIFERA INDICA; FOOD IRRADIATION; QUARANTINE PESTS; PHYTOSANITARY MEASURES

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