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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2012 Vol.31 No.5

Bioactivity of Total Alkaloids Extracted from Lycoris radiate against Housefly
Author of the article:XIANG Yu-yong, WANG Jian-jian
Author's Workplace: (School of Biology and Food Engineering, Chuzhou University, Chuzhou, Anhui Province 239012, China)
Key Words:Lycoris radiate; total alkaloids; housefly; contact toxicity; inhibiting effect
Abstract:

Bioactivity of total alkaloids extracted from Lycoris radiate against housefly Musca domestica was determined in the laboratory. Results showed that total alkaloids had certain contact toxicity against larvae and adults of M. domestica, and also inhibit its growth and development. The contact toxicity was significantly related with alkaloids dosages (15, 12, 9, 6, 3 mg/mL), treated time (24 h36 h, 48 h, 60 h, 72 h) and their interaction. The highest mortality occurred at the dosage 15 mg/mL, which was 40.96% and 38.25% in larvae(early third instar) and adults (3 d after eclosion), respectivelyat 72 h after treatment, the mean contact mortality in larvae and adultreached 39.35% and 37.55%, respectively. The contact toxicity did not differ significantly between housefly larval and adult stages. At 24, 36, 48, 60 and 72 h after treatment, the LC50 value for larvae was 57.42, 36.48, 21.92, 13.13 and 10.95 mg/mL separately, and for adult 86.66, 37.86, 23.91, 14.15 and 11.51 mg/mL, respectively. After treated at third instar larvae, the larval weight at mature did not change significantly at the treatment mg/mL, but was significantly reduced at other dosages as compared with the control. Pupation rate, pupal weight and eclosion rate were all significantly lower than that of control at each dosage.

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