تصفح QU Ceased Journals حسب المؤلف "Hagras, Ahmed E. E. [احمد الوزير هجرس]"
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The effect of temperature and relative humidity on survival of unfed hyalomma impeltatum (acarina: ixodidae)
Hagras, Ahmed E. E. [احمد الوزير هجرس]; Babiker, A. A.; Khalil, G. M. ( Qatar University , 1991 , Article)This work investigates survival of unfed Hyalomma impeltatum in which 8089 larvae, 3946 nymphs, 2058 males and 2304 females held at different combinations of temperature (21, 25, 29 and 34°C) and relative humidity (RH) ... -
Effect Of Unfed Female Weight On The Biology Of Hyalomma (Hyalomma) Impeltatum Schulze and Schlottke (Acari: Ixodidae)
Hagras, Ahmed E. E.; Khalil, Galila M. ( Qatar University , 1989 , Article)Unfed female Hyalomma (Hyalomma) impeltatum Schuize and Schlottke in 4 different weight groups of 2.6-5.0, 6.2-10.0, 10.3-14.7 and 15.2-22.3 mg, respectively, were investigated for the effect of unfed female weight (UFW) ... -
Photoperiod and salinity effects on survival and some blood parameters in female Bufo regularis
Hagras, Ahmed E. E. [احمد الوزير هجرس] ( Qatar University , 1986 , Article)This study, investigates the effect of different salinities injected (30, 70 and 100 % sea water) and photoperiods (L:D/8:16,L:D/12:12 and L: D / 16 : 8 ) on female Bufo regularis (1) survival rate, (2 ) oxygen and carbon ...