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Proceedings of the 7 th International Working Conference on Stored-product Protection-Volume 1 The toxicity of sulfuryl fluoride ( Vikane * ) to eggs of insect pests of flour mills
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bell, Charles H. Savvidou, N. Smith, Thorry W. |
| Copyright Year | 2010 |
| Abstract | The egg stage is the most tolerant life stage of insect pests to sulfuryl fluoride. In tests on eggs of Ephestia kuehniella, eggs aged 12 days (from oviposition at 25°C) proved more tolerant than other age groups. At 15"C 1 2 day old eggs needed a concentration time (ct ) product of about 4000 g. h per cu m to prevent hatch and 3000 g. h per cu m to prevent emergence of adults from samples of treated eggs. Other age groups were controlled by about 3000 and 2000 g. h per cu m respectively. At 25"C 1 2 day old eggs needed a ct product of about 1000 g h per cu m to prevent hatch and 800 g h per cu m to prevent emergence. Other age groups required 800 and 600 g. h per cu m respectively. Tests were also conducted on three species of Coleoptera, the flour beetles Trtbolium castaneum, T. confusum and the warehouse beetle Trogoderrna varia bi le , at 25 and 30"C. For these, to obtain sufficient numbers WIth the slower rate of egg production characteristic of tenebnornd and dermestid beetles, eggs aged 1 4 days were tested. The tolerances of these species straddled that of E. kuehniella at 25°C, T. confusum. being less tolerant, T variainle being of SImilar tolerance, while T. castaneum was more tolerant, requiring a ct product of over 1700 g. h per qJ. m for complete kill. At 30"C eggs of T. castaneum were all killed by a 24-h ct product of 1150 g. h per cu m, while eggs of the other two beetles were controlled by less than 500 g. h per cu m. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://spiru.cgahr.ksu.edu/proj/iwcspp/pdf2/7/345.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Proceeding |
