دراسة تأثير مثبط النمو (Lufenuron (Match في الأطوار المختلفة لعثة التين Ephrstia cautella (Walk.)‎ (Pyralidae : Lepidoptera)‎ تحت ظروف المختبر

الملخص EN

The elfect of the insect growth inhibitor (IGR) "I\ratch" was bioasseyed againstEphestia cautella (Walk.) under laboratory conditions.

Egg, larvae and adults of &e insect wereheatedwithfourdifferentconcentrationszl,S0,Tsandl00ppm.Resultsshowedthatthel00% mortality of treated l{ay old eggs occured wtren 100 ppm concentation was used.

However, the lowest mortality of l- day old eggs of 67 .680/o was observed at the rate of 25 ppm.

The highest mortality of fust larval stage at concenhation of 100 ppm was l00oZ, whereas the lowest mortalig (55.31o/o) was observed at the rate of 25 ppm.

When the fourthlarrralst4gewastreatedwithlcRatthesameconcentrations mentioned above, the percent mortalities were 82.92 aad 52.43%o, respectively.

In heated larvae, there was an obvious delay in the period of larval and pupal development, in addition to larvae and pupae malformation.

A sigrificant decrease in adult longevity and number of eggs and their hatchability and various deformities in adults.

Therenasdecreasealsoinadultlongevity,numberofeggsovipositedby fernalesand their hatching when adults were treated with IGR different concentrations.