Volume 8, Issue 3 (fall 2004)
jwss 2004, 8(3): 229-240 |
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M . Latifian, H. Seyedoleslami, J. Khajehali. Morphology of Immature Stages, Biology and Seasonal Population Fluctuations of Arboridia kermanshah Dlabola ( Hom.: Cicadellidae ) in Isfahan Province. jwss 2004; 8 (3) :229-240
URL: http://jstnar.iut.ac.ir/article-1-335-en.html
URL: http://jstnar.iut.ac.ir/article-1-335-en.html
Abstract: (23923 Views)
Populations of Arboridia kermanshah Dlabola is increasing in Isfahan vineyards. In this study, some morphological characteristics of the immature stages, over wintering sites, number of generations per year, and seasonal population fluctuations of this pest were studied in vineyards in Isfahan Province. Eggs showed apparently four distinct embryonic developmental stages. At 25.8 ±2˚C, development of eggs was completed in 10.9 ± 0.7 days. There were five nymphal developmental stages. Nymphal stages can be distinguished with wing pad development and width of head capsule and width of pronotum. The grape leafhopper overwintered as adults under leaves and crop residues. Rearing studies showed that the grape leafhopper had three generations per year, each lasting 33.9±0.6 (without overwintering period), 46.3±0.7 and 37.3±0.6 days, respectively. Seasonal monitoring of adults, nymphs and eggs showed three or four overlapping periods of activity in the field. Four periods of activities of adults were recorded through season from early May – mid June, mid June – mid July, mid July - late August and early September – mid October.
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