ISSN 1362-1971
An international journal of the Systematic and Applied Acarology Society, published since 1996
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ISSN 1362-1971 An international journal of the Systematic and Applied Acarology Society, published since 1996 [Aims] [Editors] [Content] [Subscriptions] [Contact details] [Society Homepage] |
Systematic & Applied Acarology
(2008) 13, 26–32.Effects of host plant and temperature on growth and reproduction of the strawberry spider mite Tetranychus turkestani Ugarov & Nikolski (Acari: Tetranychidae)
FARIBA SOHRABI & PARVIZ SHISHEHBOR1
Department of Plant Protection, Faculty of Agriculture, Shahid Chamran University, Ahwaz, Iran.
1
Corresponding author. E-mail: shishehborpf@yahoo.comAbstract
Tetranychus turkestani
collected in Ahwaz, Iran, was reared on cowpea (Vigna unguiculata), green gram (Vigna radiata) and pinto bean (Phaseolus vulgaris) at 25 and 30ºC. Data were collected on preimaginal developmental period, preimaginal mortality, adult longevity and fecundity. Mean developmental periods (days) were 7.0–12.1 on cowpea, 6.9–11.7 on green gram and 6.7–10.8 on pinto bean. Major mortality occurred during the nymphal stage, followed by larval and egg stages. Immature mortality was 18.6–21.6% on cowpea, 11.6–28.5% on green gram and 38.3–42.1% on pinto bean. Adult longevity was greater on cowpea than green gram and pinto bean, greater for females than males, and decreased with increasing temperature. Mean total fecundity ranged from 36.3–90.5 eggs/female. Sex ratio ranged from 0.8–0.91 (female). The intrinsic rate of natural increase (rm) was 0.23–0.32 on cowpea, 0.24–0.28 on green gram, and 0.19–0.27 on pinto bean. Generation times decreased from 16.3–10.2 days with increasing temperature.Key words: Tetranychus turkestani, development, life table, plant effect, Iran
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