不同食料对桉树枝瘿姬小蜂雌成虫发育历期和怀卵量的影响

在25℃的室内恒温条件下,分别用尾赤桉无性系DH201、巨尾桉无性系广林9号、尾巨桉无性系32-29、尾赤桉无性系186和隆缘桉的嫩叶做为食料,添加50%蜜糖水,室内喂养桉树枝瘿姬小蜂雌成虫,以清水和不添加食料做对照,测定桉树枝瘿姬小蜂雌成虫的发育历期以及怀卵量的影响。结果表明,以50%蜜糖水为食物的雌成虫的历期最长（7.1 d）,无食物条件下的雌成虫历期最短（2.5 d）;各个品系之间对雌成虫发育历期的影响无明显差异;嫩叶添加50%蜜糖水喂养能明显延长发育历期,单独用50%蜜糖水喂养的雌成虫的发育历期最长。不同食料条件对桉树枝瘿姬小蜂雌成虫的怀卵量无明显差异。

Influences of different hosts on the development period and impregnated egg number of Leptocybe invasa

Thirteen different foods including no food, water, 50% honey, Eucalyptus urophylla × E. camaldulensis DH201, DH201 ＋50%honey, E. grandis × E. urophylla , E. grandis × E. urophylla ＋50%honey, E. urophylla × E. grandis 32-29, 32-29 ＋50%honey, E. urophylla × E. camaldulensis 186, 186 ＋50%honey, E. exserta, E. exserta ＋50% honey were used to rear Leptocybe invasa under 25℃ constant temperature in the laboratory. The influences of the host on the development period and the number of eggs impregnated were observed. The results showed that the wasps fed with 50%honey had the longest life span （7.1 d）, fed with no food had the shortest life span （2.5 d） ; the influences of different host plants to the adult development period wasn＇t significant, but the adult life span fed with 50% honey and the different host plants solution was significantly longer than that of only host plants treatment. Different foods had almost no effect on the number of eggs impregnated of wasps.