Gypsy moth (Lymantriadispar) is polyphagous insect .Therefore we had conducted
an experiment to determine the influence of the following plant hosts(Malussp, Quercussp
,Prunus. armeniaca, Platanusprientalis, Pinusnigra) onthe growth and development
of
gypsy moth's larvae.
The results showed that duration of larval development was the longest
onPinusnigra(77,1±5,46) days and the shortest on Malussp(37,5±4,96) days,for larval
growth in length and weight larvae had gained the higher length and weight on Malussp in
the order (62±1,9)m.m (2136±9,62) mg. on the other hand the lower length and weight
were on Pinusnigra in the order (38±2,44)m.m (545±7,91) m.g. mortality percent of larvae
was least on Malussp.and highest on Pinusnigra.
Finally, pupae had the best weight with shortest development duration on the
Malussp, while the least weight and longest development duration were on the Pinusnigra.
There were proportional indirect of larval percentage mortality on relation to plant host, it
was highest on lower preference plant.
