First record of Encarsia formosa Gahan, 1924 (Hymenoptera: Aphelinidae), a parasitoid of the greenhouse whitefly, Trialeurodes vaporariorum (Westwood, 1856) from India

2017 ◽  
Vol 52 (3) ◽  
pp. 313-317
Author(s):  
Vinay Singh ◽  
Ajay Kumar Sood ◽  
Mohammad Hayat
Keyword(s):  
First Record ◽  
Trialeurodes Vaporariorum ◽  
Encarsia Formosa ◽  
Greenhouse Whitefly

ASPECTS OF THE INTERACTION BETWEEN A CHALCID PARASITE AND ITS ALEURODID HOST

1967 ◽  
Vol 45 (4) ◽  
pp. 539-578 ◽  
Author(s):  
T. Burnett
Keyword(s):  
Larval Mortality ◽  
Trialeurodes Vaporariorum ◽  
Host Population ◽  
Population Variation ◽  
Encarsia Formosa ◽  
Greenhouse Whitefly ◽  
Parasite Abundance ◽  
Tomato Plants ◽  
Host Mortality ◽  
Dominant Process

Three populations of the greenhouse whitefly, Trialeurodes vaporariorum, and its chalcid parasite Encarsia formosa were propagated each year for three consecutive years on tomato plants in the greenhouse. The abundance of the host and parasite species fluctuated either with peaks of increasing amplitude, with peaks of decreasing amplitude, or with irregular peaks. The dominant process in the interaction was the occurrence of two qualitatively different types of host larval mortality: (a) parasitization, and (b) almost immediate killing after attack by adult parasites. Fluctuations in host and parasite abundance resulted from the almost immediate killing of small host larvae and the death of the short-lived adult parasites. The parasite population tended to destroy similar percentages of host populations of different densities but host mortality was also related to the age structure of the host population. Variation in host reproduction, caused by differences in rearing temperature and by seasonal variation in the physical environment, influenced host and parasite densities.

scholarly journals First record of Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae) severely damaging field grown potato crops in South Sulawesi, Indonesia

2016 ◽  
Vol 56 (2) ◽  
pp. 199-202 ◽  
Author(s):  
Andi Nasruddin ◽  
Laurence A. Mound
Keyword(s):  
Tuber Yield ◽  
First Record ◽  
Trialeurodes Vaporariorum ◽  
The South ◽  
Greenhouse Whitefly ◽  
South Sulawesi ◽  
Significant Damage ◽  
Potato Crops ◽  
First Time

AbstractGreenhouse whitefly, Trialeurodes vaporariorum Westwood was reported for the first time in the South Sulawesi Province of Indonesia, and is causing significant damage to field grown potato crops. In an insecticide trial, the tuber yield in infested, untreated plants was reduced by 39%, and the plants had an average number of 68 adult whiteflies per leaflet.

scholarly journals Comparison of Biological and Chemical Control of Greenhouse Whitefly on Poinsettia Stock Plants

1992 ◽  
Vol 2 (4) ◽  
pp. 457-460 ◽  
Author(s):  
R.W. McMahon ◽  
R.K. Lindquist ◽  
M.L. Casey ◽  
A.C. Witt ◽  
S.H. Kinnamon
Keyword(s):  
Biological Control ◽  
Chemical Control ◽  
Trialeurodes Vaporariorum ◽  
Euphorbia Pulcherrima ◽  
Encarsia Formosa ◽  
Greenhouse Whitefly ◽  
Wild Stock ◽  
Control Compartment

A demonstration study was conducted to compare the effectiveness of biological and chemical control treatments on the greenhouse whitefly (GHWF) (Trialeurodes vaporariorum, Westwood) using poinsettia (Euphorbia pulcherrima Wild.) stock plants. Two identical greenhouse compartments, each containing 84 stock plants, were used. In the biological control compartment, three biweekly releases of Encarsia formosa (EF) were made, while in the chemical control compartment eight weekly applications of resmethrin or acephate aerosol treatments were made. Results showed that overall greenhouse whitefly populations in the chemical control compartment were slightly lower than in the biological control compartment. Cuttings taken from stock plants in the biological control compartment at the end of the experiment were commercially acceptable with regard to the presence of GHWF adults. Chemical names used: O,S-dimethyl acetylphosphoramidothioate (acephate), [5-(phenylmethyl)-3-furanyl] methyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropane-carboxylate (resmethrin).

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