Influence of diet on life table and population growth parameters of predatory mite Neoseiulus barkeri (Hughes) (Acari: Phytoseiidae)
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2016, Vol 10, Issue 5
Abstract
The predatory mite Neoseiulus barkeri (Hughes) is the most important and wide distributed phytoseiid mite. This predatory mite fed on plant injurious mite and small insect pests. Neoseiulus barkeri has been collected from cucumber infested with two- spotted spider mite. Life tables of this predatory mite were studied on onion thrips (Thrips tabaci Lind (Thysanoptera: Thripidae)), two-spotted spider mite (Tetranychus urticae Koch (Acari: Tetranychidae)) and corn pollen, first larvae of onion thrips and egg mites were used as prey. This research was investigated in the laboratory by using the mulbery excised leaf method in petri dishes at 27± 1?C, 16L: 8D photoperiod and 70-80% RH. Data were analyzed based on the age- stage, two- sex life table theory. Adult longevity (male) on three diets did not show any significant difference, but adult longevity (female) on corn pollen were significantly shorter than those reared on T. tabaci and T. urticae. Preimaginal developmental time showed a significant difference in the mentuioned treatments. The lifetime fecundities were 23.58, 48.67 and 26.40 offspring on T. tabaci, T. urticae and corn pollen respectively. The intrinsic rate of increase (rm) on T. tabaci, T. urticae and corn pollen were 0.162d-1, 0.171 d-1and 0.103 d-1 respectively and show a significant difference. Net reproduction rate (R0) and Finite rate of increase (?) on three diets were not different. The mean generation time on T. tabaci, T. urticae and corn pollen showed a significant difference. With attention to observed results, N. barkeri is a general predator and can play an important role in the biological control of T. urticae and T. tabaci. Corn pollen was suitable alternative food for this predator.
Authors and Affiliations
Maryam Rezaie| Zoology Research Department, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran. email: marezaie@ut.ac.ir, Reza Javan Nezhad| Department of Meteorology, Science and Research branch, Islamic Azad university, Tehran, Iran.
Keywords
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