Effect of Temperature and Photoperiod on Orius tristicolor Feeding on Tetranychus pacificus123

摘要: Studies were conducted on the predation of Orius tristicolor White feeding Pacific spider mite, Tetranychus pacificus McGregor, at various conditions temperature and photoperiod. The 4th 5th instars O. consumed more adult immature mites generally mite eggs than earlier 70, 78, 92°F in absence light photo-periods 4, 12, 16 hours light. At 78°F, there was no significant difference number by combined nymph stages comparison to a 12-hr regime. About 750 per individual (nymph plus stage) 78°F 12 about 303 Nymphs attained stage without plant moisture when an abundance available as source food well moisture.