life table parameters of parasitoid wasp eretmocerus delhiensis mani on greenhouse whitefly trialeurodes vaporariorum westwood

Authors

جعفر ابراهیمی فر

گروه حشره شناسی و بیماری های گیاهی، پردیس ابوریحان، دانشگاه تهران ارسلان جمشیدنیا

گروه حشره شناسی و بیماری های گیاهی، پردیس ابوریحان، دانشگاه تهران حسین اللهیاری

گروه گیاه پزشکی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج

abstract

the greenhouse whitefly, trialeurodes vaporariorum westwood (hem.: aleyrodidae) is a polyphagous and key pest that causes damaging to wide range of crops. the parasitoid wasp, eretmocerus delhiensis mani (hym.: aphelinidae) is a syn-ovigenic and thelytokous species that parasitizing greenhouse whitefly nymphs. in order to evaluation parasitoid wasp, eretmocerus delhiensis mani (hym.: aphelinidae) in control of greenhouse whitefly demography parameters of e. delhiensis on greenhouse whitefly on tomato cultivar super-chief at temperature 25±1°c, 65±5 % rh and a photoperiod 16:8 h (l: d) in growth chamber were studied. for calculation of population growth parameters age- stage, two-sex life table was used. the result showed that oviposition period, longevity and fecundity for this parasitoid were 4.2±0.12 d, 20.74±0.5 d and 17.43±0.17 offspring respectively. based on results of the life table, demography parameters consisting of net reproductive rate (r0), gross reproductive rate (grr) were 12.11±0.94 and 31.43±1.85 offspring per female, intrinsic rate of increase (rm), finite rate of increase (λ), were 0.16±0.0059 d-1, 1.17±.007 d-1 and mean generation time (t) and doubling time (dt) of e. delhiensis were 15.66 d and 4.354/d respectively. based on our results, this parasitoid is a promising candidate for greenhouse whitefly control.

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Journal title:
دانش گیاه پزشکی ایران

جلد ۴۷، شماره ۱، صفحات ۲۳-۳۲

Keywords
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