研究了副珠蜡蚧阔柄跳小蜂Metaphycus parasaissetiae Zhang and Huang在室内温度为25℃条件下对寄主橡副珠蜡蚧parasaissetia nigra Nietner成虫不同发育阶段的选择性,结果表明:副珠蜡蚧阔柄跳小蜂喜欢产卵于褐色期至少量幼虫出壳期的...研究了副珠蜡蚧阔柄跳小蜂Metaphycus parasaissetiae Zhang and Huang在室内温度为25℃条件下对寄主橡副珠蜡蚧parasaissetia nigra Nietner成虫不同发育阶段的选择性,结果表明:副珠蜡蚧阔柄跳小蜂喜欢产卵于褐色期至少量幼虫出壳期的橡副珠蜡蚧成虫体内,只有在较高的接蜂比例条件下,初期成虫才能被寄生;单个寄主体内的产卵量以寄生产卵初期的成虫最高,寄生率和选择系数则均以褐色期成虫最高;副珠蜡蚧阔柄跳小蜂寄生于橡副珠蜡蚧的初期成虫至少量幼虫出壳成虫体内的发育历期差异不大,为16～17 d;出蜂数以产卵初期成虫最高,为112.6头,明显高于其它几阶段。结合发育历期、寄生率、出蜂数等参数,橡副珠蜡蚧成虫的产卵初期和少量幼虫出壳期成虫是副珠蜡蚧阔柄跳小蜂寄生的最佳时期。展开更多
This study contrasts the ovipositional profiles of four members of the Papilio glaucus group, P. glaucus, P. multicaudatus, P. canadensis, and P. rutulus. We used seven choice oviposition bioassays containing leaves f...This study contrasts the ovipositional profiles of four members of the Papilio glaucus group, P. glaucus, P. multicaudatus, P. canadensis, and P. rutulus. We used seven choice oviposition bioassays containing leaves from hosts in seven plant families utilized by members of the P. glaucus group. Specifically, we contrast the overall ovipositional profiles of these species and their acceptance of a host in a novel plant family （Populus tremuloides： Salicaceae） and a host in a putatively ancestral host plant family （Liriodendron tulipifera： Magnoliaceae）. Significant differences were observed between the ovipositional profiles of P. glaucus and P. multicaudatus relative to each other and to P. canadensis and P. rutulus. In contrast, no significant differences were observed between the ovipositional profiles of P. canadensis and P. rutulus, which were also the only species that accepted P. tremuloides. Unlike the acceptance of P. tremuloides, the acceptance of L. tulipifera was present throughout the group despite the inability of the larvae of most species in the group to utilize this host. These results support the prediction of the ＂hierarchical threshold model＂ that ancestral host plants are likely to be retained in the ovipositional hierarchy while novel hosts should only be accepted by derived populations.展开更多
文摘研究了副珠蜡蚧阔柄跳小蜂Metaphycus parasaissetiae Zhang and Huang在室内温度为25℃条件下对寄主橡副珠蜡蚧parasaissetia nigra Nietner成虫不同发育阶段的选择性,结果表明:副珠蜡蚧阔柄跳小蜂喜欢产卵于褐色期至少量幼虫出壳期的橡副珠蜡蚧成虫体内,只有在较高的接蜂比例条件下,初期成虫才能被寄生;单个寄主体内的产卵量以寄生产卵初期的成虫最高,寄生率和选择系数则均以褐色期成虫最高;副珠蜡蚧阔柄跳小蜂寄生于橡副珠蜡蚧的初期成虫至少量幼虫出壳成虫体内的发育历期差异不大,为16～17 d;出蜂数以产卵初期成虫最高,为112.6头,明显高于其它几阶段。结合发育历期、寄生率、出蜂数等参数,橡副珠蜡蚧成虫的产卵初期和少量幼虫出壳期成虫是副珠蜡蚧阔柄跳小蜂寄生的最佳时期。
文摘This study contrasts the ovipositional profiles of four members of the Papilio glaucus group, P. glaucus, P. multicaudatus, P. canadensis, and P. rutulus. We used seven choice oviposition bioassays containing leaves from hosts in seven plant families utilized by members of the P. glaucus group. Specifically, we contrast the overall ovipositional profiles of these species and their acceptance of a host in a novel plant family （Populus tremuloides： Salicaceae） and a host in a putatively ancestral host plant family （Liriodendron tulipifera： Magnoliaceae）. Significant differences were observed between the ovipositional profiles of P. glaucus and P. multicaudatus relative to each other and to P. canadensis and P. rutulus. In contrast, no significant differences were observed between the ovipositional profiles of P. canadensis and P. rutulus, which were also the only species that accepted P. tremuloides. Unlike the acceptance of P. tremuloides, the acceptance of L. tulipifera was present throughout the group despite the inability of the larvae of most species in the group to utilize this host. These results support the prediction of the ＂hierarchical threshold model＂ that ancestral host plants are likely to be retained in the ovipositional hierarchy while novel hosts should only be accepted by derived populations.
