Abstract:

To reveal internal relations of the difference of feeding area among pine trees with different diameter, Monochamus alternatus Hope that were caught in the Ma’anshan forest farm by the use of attractant was fed with branch of P. massoniana, P. thunbergii, P. taeda and the branch was collected in the Ma’anshan forest farm. The results indicated that: the feeding area of large-diameter was all above of that of small-diameter of tested three kinds of pine trees. The difference of feeding area of P. thunbergii Parl. (F=3.69, P=0.0480) was significant, the difference of feeding area of P. massoniana Lamb. (F=0.41, P=0.6705) and P. taeda (F=2.48, P=0.1251) wasn’t significant; the difference of feeding area of diameter class 0.7 cm≤D≤1.0 cm was significant (F=5.01, P=0.0284) (feeding preference: P. massoniana＞P. thunbergii＞P. taeda), however the difference of percentage of feeding area of diameter class 0.4 cm≤D≤0.6 cm (F=1.44, P=0.2621) (feeding preference: P. taeda＞P. massoniana＞P. thunbergii) and 0.1 cm≤D≤0.3 cm (F=0.99, P=0.4064) (feeding preference: P. massoniana＞P. taeda＞P. thunbergii) was not significant; the difference of percentage of feeding area of diameter class 0.7 cm≤D≤1.0 cm (F=0.41, P=0.6742) and 0.4 cm≤D≤0.6 cm (F=0.43, P=0.6588) wasn’t significant, but the difference of percentage of feeding area of diameter class 0.1 cm≤D≤0.3 cm (F=4.29, P=0.0419) was significant.