Biological Attributes of Rice Sheath Mite, Steneotarsonemus spinki Smiley on Alternate Hosts of Rice

S.D. Chaudhari, P.D. Ghoghari
2018 International Journal of Current Microbiology and Applied Sciences  
The biology and morphometrics of Steneotarsonemus spinki Smiley on rice variety GR-11 was studied in laboratory condition at 31.1 ± 0.9 ºC and 28.9 ± 0.6 ºC maximum and minimum with 54.8 ± 15.18 per cent and 69.3 ± 11.4 per cent mean morning and evening relative humidity, respectively. The average biology of S. spinki showed that the egg, larval, quiescent and adult (male and female) periods were 1.875 ± 0.559 days, 3.575 ± 0.613 days, 0.556 ± 0.167 days, 3.75 ± 0.425 days and 5.00 ± 0.972
more » ... d 5.00 ± 0.972 days, respectively. The pre-oviposition period, oviposition period and post-oviposition period were 1 to 2 days, 1.5 to 3 days and 1.5 to 2.5 days, respectively. Total life cycle of S. spinki male occupied 8.95 ± 0.864 days and female required 10.20 ± 0.856 days. Sex ratio of male: female was 1: 1.59.
doi:10.20546/ijcmas.2018.702.192 fatcat:ekfdgyqck5dvbdrujns6m6sthq