scholarly journals Efficacy of Predacious Mite, Phytoseiulus, Presimilis and The acaricide, Ortus in Cntrolling the Spider Mits, Tetranychus urticae on Eggplant at Beni-Suef Governorate, Egypt

2016 ◽  
Vol 7 (4) ◽  
pp. 257-260
Author(s):  
H. Azouz
Keyword(s):  
Tetranychus Urticae ◽  
Predacious Mite

THE INFLUENCE OF HUMIDITY ON THE ACTIVITY OF PHYTOSEIULUS PERSIMILIS ATHIAS-HENRIOT AND ITS PREY, TETRANYCHUS URTICAE (C. L. KOCH) (ACARINA: PHYTOSEIIDAE, TETRANYCHIDAE)

1966 ◽  
Vol 44 (5) ◽  
pp. 863-871 ◽  
Author(s):  
Hans Mori ◽  
D. A. Chant
Keyword(s):  
Tetranychus Urticae ◽  
Phytoseiulus Persimilis ◽  
High Water ◽  
Predacious Mite ◽  
Tetranychus Urticae Koch

The activity of the predacious mite Phytoseiulus persimilis Athias-Henriot and its prey, Tetranychus urticae (Koch), was studied at several humidity levels. The prey, but not the predator, continuously avoided high humidities. Both species were more active in low humidities than in high. Water available for drinking was important to the survival of P. persimilis.

THE INFLUENCE OF PREY DENSITY, RELATIVE HUMIDITY, AND STARVATION ON THE PREDACIOUS BEHAVIOR OF PHYTOSEIULUS PERSIMILIS ATHIAS-HENRIOT (ACARINA: PHYTOSEIIDAE)

1966 ◽  
Vol 44 (3) ◽  
pp. 483-491 ◽  
Author(s):  
Hans Mori ◽  
D. A. Chant
Keyword(s):  
Relative Humidity ◽  
Functional Response ◽  
Tetranychus Urticae ◽  
Prey Density ◽  
Prey Species ◽  
Phytoseiulus Persimilis ◽  
Predacious Mite ◽  
Egg Consumption ◽  
Tetranychus Urticae Koch

The functional response of the predacious mite Phytoseiulus persimilis Athias-Henriot was tested at various densities of Tetranychus urticae (Koch), a prey species, and at several levels of humidity and hunger. The consumption of adult prey per predator rose at first with increasing prey density, but significantly decreased at high densities. This phenomenon was caused by an increase in abandonment of captures resulting from disturbance by other prey at high prey densities. Egg consumption by the predator increased with prey density.Prey consumption was greater at low than at high humidities. A significant increase in the rate of repeat feeding was found at higher levels of predator hunger, but the differences in consumption of prey between the three levels of hunger were not significant.

Relative Toxicity of Parathion and Kelthane to the Predacious Mite Phytoseiulus persimilis Athias-Henriot and its Prey, Tetranychus urticae Koch, (Acarina: Phytoseiidae, Tetranychidae) in the Laboratory

1965 ◽  
Vol 97 (2) ◽  
pp. 172-176 ◽  
Author(s):  
D. C. Herne ◽  
D. A. Chant
Keyword(s):  
Tetranychus Urticae ◽  
Phytoseiulus Persimilis ◽  
Test Method ◽  
Similar Relationship ◽  
Relative Toxicity ◽  
Predacious Mite ◽  
Spray Tower ◽  
Tetranychus Urticae Koch

AbstractThe relative toxicity of Kelthane (1,1-bis (p-chlorophenyl) -2,2,2-trichloroethanol), and parathion to Phytoseiulus persimilis Athias-Henriot and its prey, Tetranychus urticae K. (= telarius (L.)), was determined using a Potter Spray Tower. Parathion was found to be far more toxic to P. persimilis than was Kelthane. The LD50 values for Kelthane were 0.051% and 0.29% for T. urticae and P. persimilis respectively, and for parathion were 0.050% and 0.0044% respectively. The LD95 values bore a similar relationship to each other. The two materials were equally toxic to T. urticae. Therefore, use of Kelthane rather than parathion in an environment where P. persimilis and T. urticae were interacting would favour the beneficial species. The statistical aspects of the test method are discussed.

scholarly journals Control of Two Spotted Spidermite (Tetranychus urticae) by Sodium Oleate 20L, and Effects on the Predacious Mite (Phytoseiulus persimilis).

1994 ◽  
Vol 36 (0) ◽  
pp. 45-46
Author(s):  
Michio MATSUDA ◽  
Tetsuji MIYATA ◽  
Keizaburo MURAI ◽  
Norio YASUDOMI ◽  
Takesi GOTO ◽  
...  
Keyword(s):  
Tetranychus Urticae ◽  
Sodium Oleate ◽  
Phytoseiulus Persimilis ◽  
Predacious Mite
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