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PARENT SESSION

PW18 Field Biological Monitoring of Ecosystem Impairment
Exhibit Hall
8:00 AM - Wednesday

(PW268) Monitoring of toxicants affecting metamorphosis of silkworm in/on mulberry leave.

Park, Kyung Hun1, Park, Yeon Ki2, Lee, Hee Dong3, Park, Byung Jun4, Joo, Jin Bok5, Ryu, Gab Hee6, Sohn, Bong Hee7, Seong, Su Il8, 1 National Institute of Agricultural Science and Technology (NIAST), Suwon, Kyunggi Province, Korea2 National Institute of Agricultural Science and Technology (NIAST), Suwon, Kyunggi Province, Korea3 National Institute of Agricultural Science and Technology (NIAST), Suwon, Kyunggi Province, Korea4 National Institute of Agricultural Science and Technology (NIAST), Suwon, Kyunggi Province, Korea5 National Institute of Agricultural Science and Technology (NIAST), Suwon, Kyunggi Province, Korea6 National Institute of Agricultural Science and Technology (NIAST), Suwon, Kyunggi Province, Korea7 National Institute of Agricultural Science and Technology (NIAST), Suwon, Kyunggi Province, Korea8 Suwon University, Suwon, Kyunggi Province, Korea

ABSTRACT- The current study was performed to clarify the pupation disorder symptoms in silkworm which herbicide, molinate has been regarded as a causal origin. Molinate residues in mulberry leaves was monitored in major rearing area of silkworm; Yeacheon, Sangju and Namwon. Detected range of the molinate in mulberry leaves was 0.002 to 0.013 mg/kg and detection frequency was 30.0 to 81.8 %. Molinate concentration in the air of mulberry tree growing area was 0.004 ug/3. Water diluted solution of molinate at the concentration of 1, 10, 100 mg/L gave no abnormal symptoms in silkworm irrespective of spraying to silkworm or spiking to diet. Exposing the silkworm to the air containing 250, 2,500, and 10,000 ug/3 also revealed no abnormal symptom. These results illustrated that the abnormal growth of silkworm encountered in the field was not caused by pesticide contamination

Key words: molinate, silkworm, monitoring, toxicity


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