life table parameters of parasitoid wasp eretmocerus delhiensis mani on greenhouse whitefly trialeurodes vaporariorum westwood
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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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بررسی برخی ویژگیهای زیستی و تغذیهای زنبور پارازیتویید Eretmocerus delhiensis Mani روی سفیدبالک گلخانه Trialeurodes vaporariorum Westwood
سفیدبالک گلخانه (Hem., Aleyrodidae) Trialeurodes vaporariorum آفتی همهجازی، پلیفاژ و کلیدی است که به دامنه وسیعی از محصولات حمله میکند. در این پژوهش، پارامترهای زیستی و تغذیهای زنبور پارازیتویید Eretmocerus delhiensis Mani (Hym., Aphelinidae) روی سفیدبالک گلخانه در تغذیه از گیاه گوجه فرنگی مورد ارزیابی قرار گرفت. آزمایشها در شرایط کنترلشده، دمای 1±25 درجه سلسیوس، رطوبت نسبی 5±65 درصد و د...
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The parasitoid wasp, Eretmocerus delhiensis (Hymenoptera, Aphelinidae) is a thelytokous and syn-ovigenic parasitoid. To evaluate E. delhiensis as a biocontrol agent in greenhouse, the killing efficiency of this parasitoid by parasitism and host-feeding, were studied. Killing efficiency can be compared by estimation of functional response parameters. Laboratory experiments were performed in cont...
full textPopulation Structure of the Greenhouse Whitefly, Trialeurodes vaporariorum (Westwood), an Invasive Species from the Americas, 60 Years after Invading China
Though the greenhouse whitefly, Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) was introduced into China more than 60 years ago, the genetic diversity and structure of this exotic insect pest and virus vector have not been studied. To investigate the population genetic characteristics of this invasive species and to identify potential invasion routes, the genetic diversity and po...
full textLife history parameters of Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) at different environmental conditions on two bean cultivars.
Life-history parameters of the greenhouse whitefly Trialeurodes vaporariorum (Westwood), an important pest of bean crops in Colombia, were determined in environmental control chambers on two dry bean (Phaseolus vulgaris) cultivars (cv.). Trialeurodes vaporariorum longevity on cv. Chocho decreased as temperature increased from 22.6 d at 19 degrees C to 5.9 d at 26 degrees C. Fecundity was signif...
full textVolatile-Mediated Attraction of Greenhouse Whitefly Trialeurodes vaporariorum to Tomato and Eggplant
The behavior of the greenhouse whitefly, Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae), is known to be affected by plant volatile cues, but its attraction or repellent to specific volatile cues has not been deeply studied yet. Therefore, the aim of our study was to identify the most attractive plant among cultivars of tomato (Solanum lycopersicum) and eggplant (Solanum melongena) ...
full textGlobal phylogenetic relationships, population structure and gene flow estimation of Trialeurodes vaporariorum (Greenhouse whitefly).
Trialeurodes vaporariorum (Westwood, 1856) (Greenhouse whitefly) is an agricultural pest of global importance. It is associated with damage to plants during feeding and subsequent virus transmission. Yet, global phylogenetic relationships, population structure, and estimation of the rates of gene flow within this whitefly species remain largely unexplored. In this study, we obtained and filtere...
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Journal title:
دانش گیاه پزشکی ایرانجلد ۴۷، شماره ۱، صفحات ۲۳-۳۲
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