板栗挥发物对桃蛀螟成虫寄主选择行为的影响

通过田间调查及行为反应、EAG反应和产卵选择性测定,研究了板栗挥发物对桃蛀螟(Conogethes punctiferalis)成虫寄主选择行为的影响.2004-2008年的田间调查结果表明:桃蛀螟在农大1号板栗上的蛀果率为16.1%~25.3%,而在河源油栗上的蛀果率均小于5%,桃蛀螟对前者的危害明显较重.农大1号板栗的果实和叶片挥发物对桃蛀螟雌蛾均有显著吸引作用,其中果实比叶片挥发物的吸引作用更强,但上述挥发物对雄蛾没有明显吸引作用;河源油栗的果实和叶片挥发物则对雌、雄蛾均无吸引作用.触角电位反应试验表明,桃蛀螟雌蛾对农大1号板栗果实挥发物的反应比河源油栗果实强烈,但雄蛾没有明显差异;同一品种中,雌、雄蛾对果实的反应均比叶片强烈.桃蛀螟雌蛾在农大1号板栗果实上的产卵量明显高于叶片及河源油栗的果实和叶片,而后三者之间差异不显著.

Effects of volatiles from chestnut on host preference of adult Conogethes punctiferalis(Lepidoptera:Pyralidae)

Through field survey and the tests of behavioral response,EAG response,and multiple-choice oviposition,this paper studied the effects of volatiles from Nongda No.1 chestnut(NC)and Heyuan oil chestnut(HC)on the host-selection behavior of adult Conogethes punctiferalis.The field survey in 2004-2008 showed that the moth-eaten rate of NC fruits by adult C.punctiferalis was 16.1%-25.3%,while that of HC fruits was less than 5%.The volatiles from NC fruits and leaves were more attractive to female than to male mot...