No abstract

Brassicaceae family produce a specific secondary metabolites, so called glucosinolates which are known to mediate interactions between Brassicaceae and their associated insect herbivores. They have been recognized as a class of natural pesticides since they exhibit toxic or repellent effects. They establish a significant defence mechanism to protect Brassica plants against pests and diseases. The glucosinolate concentration can increase in response to herbivore feeding, and this high level of glucosinolates can affect both generalist and specialist herbivores. This study evaluate some biological aspects of Cabbage white butterfly when fed its larvae on cabbage seedling infested with Cabbage aphid Brevicoryne brassica by constructing age-stage, two sex life table. The results showed that the survival rates off eggs, larvae, pupae, females and males were 1, 1; 0.78, 0.42; 0.64, 0.42; 0.04, 0.06; and 0.02; 0.04 when fed its larvae non infested and infested plants respectively. Life expectancy were 24. 04, 17.94; 20.04, 14.54; 7.38, 6.76; 12.8, 9.4 and 4.33, 2.67 respectively too. The reproduction rate of female was 164.66 and 99.87eggs/females,whereas the mortality rates 0.06 at age 7 for larvae fed on health Cabbage plants, while the highest death rate was 0.22 at age 10 when fed on infested plants, and for pupae 0.64 at age 25 and 0.50 at age 26, respectively. The population growth parameters showed that the intrinsic rate of increase (rm) was 0.07, 0.10 individuals/day, finite rate of increase ‫)ג(‬ 1.1077 1.0772, net reproductive rate (R0) 24.64, 11.16 female/female/generation, Groos reproduction rate (Grr) 225.96, 136.95 eggs/female. A difference was also found in the periods required for the doubling time (DT) of the population depending on the insect's feeding, as the minimum period was 6.77 days when feeding on healthy plants, while the highest period was 9.31 days when feeding on plants infested with nymphs of Cabbage Aphid.It was also found that the mean generation time (T) decreased when feed on healthy plants, as it reached 31.31 days, while that period reached 32.42 days when feed infested plants. It is evident from the above results that plants infested with Cabbage Aphid had affected the life aspects of Cabbage white butterfly. The feeding of aphids on Cabbage plants has stimulated its to produce or increase the concentration of some secondary compounds that had an obvious effect on the life of the Cabbage white butterfly.

Print) 88 ‫النبات‬ ‫وقاية‬ ‫لعلوم‬ ‫الثاني‬ ‫الدولي‬ ‫المؤتمر‬ ‫وقائع‬ 41 -31 ‫الثاني‬ ‫تشرين‬ 3142 ‫الموصل‬ ‫/جامعة‬ ‫والغابات‬ ‫الزراعة‬ ‫كلية‬ ‫لذبابة‬ ‫النسبي‬ ‫الوجود‬ ‫ثمار‬ ‫البطيخ‬ ‫الكبرى‬ Dacus frontalis Becker ‫القرعيات‬ ‫ثمار‬ ‫وذبابة‬ Dacus ciliatus Loew ‫على‬ ‫ثمار‬ ‫ال‬ ‫خيار‬ Cucumis sativus L. ‫الجورانً‬ ‫صكب‬ ‫رضا‬ ‫جامعة‬ / ‫الزراعة‬ ‫كلٌة‬ ‫بؽداد‬ aljorany@yahoo.com _ redha mail: -E ‫الخالصة‬ ‫القرعٌات‬ ‫ذبابة‬ Dacus ciliatus Loew ‫من‬ ‫العدٌد‬ ‫فً‬ ‫القرعٌة‬ ‫العائلة‬ ‫ثمار‬ ‫على‬ ‫ومهمة‬ ‫رئٌسٌة‬ ‫آفة‬ ‫ذبابة‬ ‫سجلت‬ ، ‫العراق‬ ‫فً‬ ‫زراعتها‬ ‫مناطق‬ ‫ثمار‬ ‫البطٌخ‬ ‫الكبرى‬ Dacus frontalis Becker ‫ثمار‬ ‫على‬ ‫الخٌار‬ Cucumis sativus L. ‫التً‬ ‫البالؽات‬ ‫تشخٌص‬ ‫نتائج‬ ‫اظهرت‬ ‫العراق.‬ ‫وسط‬ ‫الخرٌفٌة‬ ‫الزراعة‬ ‫فً‬ ‫ذبابة‬ ‫ان‬ ‫مصابة‬ ‫خٌار‬ ‫ثمار‬ ‫من‬ ‫جمعت‬ ‫ثمار‬ ‫البطٌخ‬ ‫االكثر‬ ‫هً‬ ‫الكبرى‬ ‫عددا"‬ ‫القرعٌات‬ ‫ثمار‬ ‫ذبابة‬ ‫من‬ ‫أذ‬ ‫نسبة‬ ‫شكلت‬ 97.29 % ‫و‬ ‫واحدة‬ ‫اصابة‬ ‫موقع‬ ‫تظهر‬ ‫التً‬ ‫الثمار‬ ‫فً‬ 99.92 % ‫موقعٌن‬ ‫تظهر‬ ‫التً‬ ‫الثمار‬ ‫فً‬ ‫لالصا‬ ‫بة‬ ‫القرعٌات‬ ‫ثمار‬ ‫ذبابة‬ ‫نسبة‬ ‫كانت‬ ‫حٌن‬ ‫فً‬ 2.97 ‫و‬ 0.77 % ، ‫التوالً‬ ‫على‬ ‫البالؽات‬ ‫عدد‬ ‫متوسط‬ ‫وكان‬ ‫واحدة‬ ‫اصابة‬ ‫مصابة‬ ‫ثمار‬ ‫من‬ ‫نتجت‬ ‫التً‬ 2.79 ‫و‬ 9..6 ‫تحمل‬ ‫ثمار‬ ‫من‬ ‫نتجت‬ ‫والتً‬ ‫بالؽة/ثمرة‬ ‫أ‬ ‫صابتٌن‬ 33..9 ‫و‬ 3..77 ‫ثمار‬ ‫وذبابة‬ ‫الكبرى‬ ‫البطٌخ‬ ‫ثمار‬ ‫ذبابة‬ ‫من‬ ‫لكل‬ ‫ثمرة‬ / ‫بالؽة‬ ‫التوالً‬ ‫على‬ ‫القرعٌات‬ . ‫أن‬ ‫أٌضأ"‬ ‫النتائج‬ ‫أظهرت‬ ‫متوسط‬ ‫نهاٌة‬ ‫الى‬ ‫االول‬ ‫تشرٌن‬ ‫من‬ ‫االول‬ ‫من‬ ‫للمدة‬ ‫الثمار‬ ‫الصابة‬ ‫المئوٌة‬ ‫النسبة‬ ‫الثانً‬ ‫تشرٌن‬ ‫من‬ ‫االول‬ ‫االسبوع‬ 97.02 ‫ذبابة‬ ‫شكلت‬ % ‫ثمار‬ ‫البطٌخ‬ ‫منها‬ ‫الكبرى‬ 08.4. % ‫الباقٌة‬ ‫والنسبة‬ 6.78 ، ‫القرعٌات‬ ‫ثمار‬ ‫لذبابة‬ % ‫متوسط‬ ‫وكان‬ ‫ع‬ ‫الثمار‬ ‫فً‬ ‫الٌرقات‬ ‫دد‬ ‫وأ‬ ‫اصابة‬ ‫تحمل‬ ‫التً‬ ‫المصابة‬ ‫صابتٌن‬ 2.83 ‫و‬ 37.66 ‫التوالً‬ ‫على‬ ‫ٌرقة/ثمرة‬

No abstract

Trials were carried out in the middle of Iraq ( 3 different sites ) during 2009 to detecation and determined the seasonal occurrence of Agriotes lineatus L. Three YATOR funnel traps were used in each of these sites which baited with the specific pheromone of A. lineatus from the first of March to the end of October in the College of Agriculture - Abu- Ghraib / Provenance of Baghdad and AL-Nile / Provenance of Babylon , while in AL-Radhwania was used through May- June. Pheromone dispenser were changed every 6 weeks in each of these traps . Males of A. lineatus were found in all of the three sites , and the total number capture were 208 , 897 and 57 male / 3 traps / season in College of Agriculture , AL-Nile and AL-Radhwania respectively . This is the first record of this species in Iraq . Seasonal occurrence was lasted from mid of April to mid of July with peak population in the end of May in college of Agriculture, while lasted from April to first of July with peak population at the first of June in AL-Nile site. The high population density of Males in AL-Nile site indicate the economic important of A. lineatus in this site on many crops epically on Potato crop .