Control of Three Species of Stored-Product Insects in Wheat Treated With Steam and Hot Air
| Autor: | Darsana Divagar, Stefan Cenkowski, Fuji Jian |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Insecticides Insecta 010603 evolutionary biology 01 natural sciences Air treatment Laemophloeidae Animals Water content Triticum Tribolium Ecology biology Moisture Cryptolestes ferrugineus Sitophilus fungi food and beverages General Medicine biology.organism_classification Coleoptera Steam 010602 entomology Horticulture Germination Insect Science Curculionidae |
| Zdroj: | Journal of Economic Entomology. 112:1964-1974 |
| ISSN: | 1938-291X 0022-0493 |
| DOI: | 10.1093/jee/toz080 |
| Popis: | The effect of 105°C steam or hot air on adult mortality of three species of stored-product insect pests outside wheat kernels of 12.5, 14.5 and 16.5% moisture content was investigated. The species were Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae), and Sitophilus oryzae (L.) (Coleoptera: Curculionidae). In the case of S. oryzae, young adults and immature stages inside wheat kernels were also tested. The mortality of insects inside kernels was higher at lower moisture contents of wheat treated with hot air, whereas moisture content did not significantly affect mortality of insects treated with steam. In the hot air treatment, all adults of the three species outside kernels had 100% mortality when the treatment time was 75 s for wheat with 16.5% moisture content, and 60 s for 12.5 and 14.5% wheat. In the steam treatment, the time to reach 100% mortality of adults outside kernels was 1 s at any moisture content and without significantly affecting germination. The young adults and immature stages of S. oryzae inside kernels required 90 s to reach 100% mortality in hot air, whereas 3 s was needed in steam. The treatment to reach 100% mortality of insects inside kernels caused a 20% drop in germination in steam and 81% drop in hot air. |
| Databáze: | OpenAIRE |
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