Articles
LABORATORY ANALYSIS OF FIVE HOST PLANT SOURCES ON LIFE CAPACITIES OF GYPSY MOTH, LYMANTRIA DISPAR (LEP.: LYMANTRIIDAE) AND EVALUATION OF THE RESULTS IN FIELD CONDITIONS IN YASUJ AREA OF IRAN
Article number
940_90
Pages
657 – 663
Language
English
Abstract
Gypsy moth (Lymantria dispar L.) is one of the most important pests of forest and ornamental trees in the world.
Host plants have a significant effect on the growth and development of the pest larvae.
Food consumption, survival rate, age specific longevity and fecundity of gypsy moth were studied on five different host species, including apple (Malus domestica), black poplar (Populus nigra), white poplar (Populus alba), oak (Quercus sp.) and pear (Prunus communis) under laboratory and field conditions in Yasouj area.
The results indicated that the highest total consumed leaf surface by a larva was on apple, with the amount of 1014 cm2. First instar larvae did not survive after consumption of a small amount of white poplar and pear leaves.
Under laboratory conditions, age specific survival and longevity were significantly different on apple and black poplar compared with oak.
No significant differences were found between age specific longevity of gypsy moth on apple and black poplar under experimental conditions.
Host preference was considerably higher for apple and black poplar than for oak.
The average weight of female pupae developed on apple, black poplar and oak were 1440, 1320 and 1100 mg, respectively.
Fertility rate of female moth is directly related to the weight of the insect; the fertility rate of an adult moth developed on apple was 3.19 and it was higher than that of the moth developed on black poplar and oak (2.59 and 2.41, respectively).
Host plants have a significant effect on the growth and development of the pest larvae.
Food consumption, survival rate, age specific longevity and fecundity of gypsy moth were studied on five different host species, including apple (Malus domestica), black poplar (Populus nigra), white poplar (Populus alba), oak (Quercus sp.) and pear (Prunus communis) under laboratory and field conditions in Yasouj area.
The results indicated that the highest total consumed leaf surface by a larva was on apple, with the amount of 1014 cm2. First instar larvae did not survive after consumption of a small amount of white poplar and pear leaves.
Under laboratory conditions, age specific survival and longevity were significantly different on apple and black poplar compared with oak.
No significant differences were found between age specific longevity of gypsy moth on apple and black poplar under experimental conditions.
Host preference was considerably higher for apple and black poplar than for oak.
The average weight of female pupae developed on apple, black poplar and oak were 1440, 1320 and 1100 mg, respectively.
Fertility rate of female moth is directly related to the weight of the insect; the fertility rate of an adult moth developed on apple was 3.19 and it was higher than that of the moth developed on black poplar and oak (2.59 and 2.41, respectively).
Authors
K. Saeidi, M. Hosseini Farahi
Keywords
Lymantria dispar, food resources, physiological characteristics, laboratory condition, Yasuj, Iran
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