西北豆芫菁Epicauta sibirica的取食偏好与交配行为

Feeding preference and mating behaviors of Epicauta sibirica (Coleoptera: Meloidae)

通过野外观察和室内养殖,对西北豆芫菁Epicauta sibirica(Pallas, 1773)成虫的取食偏好与交配行为进行了观察和分析,结果发现:1)西北豆芫菁成虫喜食大豆和马铃薯的叶片;2)西北豆芫菁成虫的交配行为包括求偶和交尾2个阶段.求偶过程会反复多次,求偶行为持续时间平均为(9.60±1.78) min,间隔时间平均为(6.55±1.92) min.交尾过程中采用"一"字式姿势,交尾时段主要集中在8:00～13:00,交尾持续时间平均为(165.44±14.17) min.

The feeding preference and mating behaviors of Epicauta sibirica (Pallas, 1773) were analyzed by observation indoors and in the field. Results showed: 1) Glycine max and Solanum tuberosum were the most preferred host plants for adult;2) Mating behavior of E. sibirica included both courtship and copulation. The courtship behavior is repeated several times in one mating process. Courtship behavior lasted (9.60±1.78) min;the interval between the two behaviors lasted (6.55±1.92) min. The species assumes linear position in the copulation. The copulation behavior occurred at 8:00 to 13:00 mostly and lasted (165.44±14.17) min.