Biology of rice weevil Sitophilus oryzae (L.) Rojasara A D, Patel D R* Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari, 396450 *Email: patel.devendra2829@yahoo.com
Online published on 24 September, 2020. Abstract Biology of the rice weevil Sitophilus oryzae (L.) was studied on the rice variety Jaya under laboratory condition at the P.G. Research Laboratory, Department of Agricultural Entomology, N. M. College of Agriculture, Navsari Agricultural University, Navsari. The duration of first, second, third, fourth instar larvae and pupa was 5.92 ± 0.70, 6.64 ± 0.49, 8.04 ± 0.73, 5.36 ± 0.70 and 6.48 ± 0.51 days, respectively. The preoviposition, oviposition and postoviposition periods were 3.79 ± 0.66, 54.80 ± 3.93, 19.88 ± 2.62 days, respectively; and fecundity observed at 288 to 389 (352.68 ± 28.84). The adult females survived for 72.36 ± 3.54 days while, males survived for 50.68 ± 2.97 days with food; without food it was 8.6 ± 0.82 and 5.8 ± 0.82 days, respectively. The total lifecycle was 83.12 ± 4.43 days (male) and 110.8 ± 3.35 days (female) with food. Top Keywords Sitophilus oryzae, Rice, Biology, Incubation period, Oviposition, Egg, Grub, Instars, Pupa, Adult, Male, Female, With food, Without food. Top |