Seasonal abundance of Diaretiella rapae (M´Intosh) (Braconidae: Aphidiinae) parasitizing Lipaphis erysimi (Kaltenbach) (Hemiptera: Aphididae) in Brassica juncea variety Pusa bold

Munis Entomology Zoology

M. S. Akhtar¹ 

关键词: Brassica juncea;    Diaretiella rapae;    Parasitism;    Lipaphis erysimi;    Seasonal abundance;   

DOI  :  

学科分类：昆虫学

来源: Munis Research Group

【 摘 要 】

 The occurrence of Diaretiella rapae parasitizing Lipaphis erysimi in Mustard variety Pusa bold (Brassica juncea) was evaluated. Successful parasitism was 75.46% and 68.96% during 2006-07, 2007-08 respectively. Correlation coefficient of average per cent relative humidity with both aphid (r=-0.52) and parasitoid (r=-0.59) were negatively significant whereas day (r=0.65) and the night temperature (r=0.61) had significant positive correlations with the parasitoid population only. The best fitted polynomial regression equation indicated that 30-60% variability of the aphid population could be explained by the different weather parameters, while 11-50% variability of the parasitoid population could be explained by weather parameters.

【 授权许可】

Unknown