Journal
INSECTS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/insects10120452
Keywords
Bactrocera dorsalis; navel orange; ecofriendly pest management; mortality; fruit quality
Categories
Funding
- Key Research Program of International Collaboration between China and Czech Republic [2018YFE0108700]
- Research Program of the former General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China [2017IK226]
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Citrus sinensis (L.) Osbeck is an important economic product in South China, but the presence of quarantine pests in this product proposes the potential threat to international trade security. To find a proper phytosanitary cold treatment for Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), commonly called oriental fruit fly, one of the most serious quarantine insects in navel orange, eggs in petri dish and larvae in navel orange fruits were exposed to a 1.7 degrees C cold chamber for 0-11 days to compare the tolerance to cold treatment. The 2nd instar larva (4 days) is the most tolerant stage, and the estimated time for 99.9968% mortality at the 95% confidence level is 11.3 (9.5, 14.6) days. Then 15 days was selected as the target time for the confirmatory tests, resulting in no survivors from 37,792 treated larvae with the efficacy of 99.9921% mortality at the 95% confidence level. The quality assessments were conducted to compare the effect on the navel orange fruit between cold treatment and the conventional cold storage. Results indicated that the cold treatment did not negatively affect the fruit quality. Therefore, this cold treatment showed potential as a commercial quarantine treatment for navel orange in international trade.
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