دراسة كفاءة المفترس Typhlodromus athiasae Porath and Swirski (Acari Phytoseiidae)‎ في التغذية على الأكاروس Tetranychus urticae Koch

Abstract EN

A study was conducted at the Biological Control Studies and Research Centre -BCSRS- at Damascus University (Syria) during 2013 - 2014.

The aim of the study was to evaluate the predacious ability of the mite, Typhlodromus athiasae Porath and Swirski, 1965, (Phytoseiidae: Acari) on different stages (eggs, immature stages and adult) of the two spotted red mite Tetranychus urticae (Koch, 1836 ((Acari: Tetranychidae) in laboratory experiments at a temperature of 252±Cº, relative humidity of 655%± and a light regime of 16L: 8D.

Experimental results showed that the predator consumed significantly more larvae than other stages.

T.athiasae protonymphs, deutonymphs, adult male and female consumed 3.50.91±4.8 ,0.87±4.1 ,0.84± and 5.40.84± eggs/day, respectively, and 6.6±0.91 13.8 ,0.91±7.8 ,0.84± and 11.30.94± immature stages/day, respectively.

The study suggested that consumption rate of the female predation is higher than consumption rate of the protonymphs, deutonymphs.

There is no significant difference between consumption rate of the female predation and consumption rate of the male, so we cannot conclude that the predation rate among females was greater.