نوع مقاله : مقاله پژوهشی
نویسندگان
1 مرکز تحقیقات کشاورزی و منابع طبیعی گیلان، لاهیجان- ایستگاه تحقیقات گل و گیاهان زینتی، ص. پ. 96599-44169.
2 موسسه تحقیقات جنگلها و مراتع، تهران. ص. پ. 116-13185
3 دانشکده علوم کشاورزی، دانشگاه گیلان، رشت. ص. پ. 3179-41335
4 دانشکده علوم کشاورزی، دانشگاه گیلان، شت. ص. پ. 3179-41335
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Chaitophorus populeti (Panz) is a pest of various poplar clones in Iran and many parts of the world. Oenopia conglobata (L.) is one of the most active predators that has been collected from populus trees infected with this aphid in Guilan province. To determine biology of this lady beetle in the laboratory
conditions, eggs were collected from populus trees Populus caspica (Bornm) infected with the aphid C. populeti in the year 2000. In order to rear collected samples in laboratory, eggs were separately kept in Petri-dishes (10 cm) under laboratory conditions and larvale developed from the egg were daily fed with C, populeti. All of the experiments were carried out at 25°C,65% RH and LD 14:10 in the growth chamber. The results of this experiment showed the average developmental period of incubation,1-4 larval instars, prepupa and pupa as 2.36±0.08, 1.9±0.05, 1.73±0.08,
1.7±0.08,4.1±0.05, I and 4.1±0.05 days, respectively. The adult females laid eggs in batches of 7-41 on upper or lower surface ofthe leaves. The average number of daily egg laying, total eggs laid and egg laying period were 39.22±0.97, 2645.83±41.81 eggs and, 67.66±1.28 days, respectively.
Average daily feeding rate for 1-4 larval instars as well as female and male adults were 19.6±0.39, 26.73±1.17, 48.33±0.75, 67.91±1.01, 44.19±0.5 and 40.92±0.71 aphid.
کلیدواژه‌ها [English]
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