This study aims to evaluate the effectiveness of plant extracts Artemisia herba-alba, Matricharia chamomella, and Melia azedarach against the Culex quinquefasciatus. The following concentrations were used to assess th...This study aims to evaluate the effectiveness of plant extracts Artemisia herba-alba, Matricharia chamomella, and Melia azedarach against the Culex quinquefasciatus. The following concentrations were used to assess the effectiveness ofA. herba-alba, M. chamomella, and M. azedarach： 0.50, 1.00, 1.50, 2.00, 2.50 and 3.00 mg/L; 0.12, 0.25, 0.50, 0.75, 1.00 and 1.50 mg/L and 0.50, 0.75, 1.00, 1.50, 1.75 and 2.00 mg/L, respectively. The mortality rates of the mosquito pupae were measured after 24 hours. It was found that the LCso was 0.50, 1.00 and 1.80 mg/L of M. chamomile, M. azedarach, and A. herab-alba respectively which mean that M. chamomella extracts had the best pesticide effects against Cx. Quinquefasciatus pupae where was A. herba-alba the lower of them.展开更多
A new species of Culicoides ( Jilinocoides ), C. ( J. ) guangxiensis sp. nov. from Guangxi Zhuang Autonomous Region, China is described. The new species is closely allied to Culicoides qianweiensis Yu 1982,but is dist...A new species of Culicoides ( Jilinocoides ), C. ( J. ) guangxiensis sp. nov. from Guangxi Zhuang Autonomous Region, China is described. The new species is closely allied to Culicoides qianweiensis Yu 1982,but is distinctly different in the presentation of the sensilla coeloconica, sensory pit of the palpus third segment,number of mandible teeth, pale spot on basal portion of wing and r-m pale spot on wing of female. The type spec-imen is deposited in the Institute of Military Medical Sciences, Shenyang Military District, Shenyang 110034,China.展开更多
文摘This study aims to evaluate the effectiveness of plant extracts Artemisia herba-alba, Matricharia chamomella, and Melia azedarach against the Culex quinquefasciatus. The following concentrations were used to assess the effectiveness ofA. herba-alba, M. chamomella, and M. azedarach： 0.50, 1.00, 1.50, 2.00, 2.50 and 3.00 mg/L; 0.12, 0.25, 0.50, 0.75, 1.00 and 1.50 mg/L and 0.50, 0.75, 1.00, 1.50, 1.75 and 2.00 mg/L, respectively. The mortality rates of the mosquito pupae were measured after 24 hours. It was found that the LCso was 0.50, 1.00 and 1.80 mg/L of M. chamomile, M. azedarach, and A. herab-alba respectively which mean that M. chamomella extracts had the best pesticide effects against Cx. Quinquefasciatus pupae where was A. herba-alba the lower of them.
文摘A new species of Culicoides ( Jilinocoides ), C. ( J. ) guangxiensis sp. nov. from Guangxi Zhuang Autonomous Region, China is described. The new species is closely allied to Culicoides qianweiensis Yu 1982,but is distinctly different in the presentation of the sensilla coeloconica, sensory pit of the palpus third segment,number of mandible teeth, pale spot on basal portion of wing and r-m pale spot on wing of female. The type spec-imen is deposited in the Institute of Military Medical Sciences, Shenyang Military District, Shenyang 110034,China.
