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

摘要:

在25℃的室内恒温条件下，分别测定了无食物、清水、50%蜜糖水、尾赤桉无性系DH201、DH201+50%蜜糖水、巨尾桉无性系广林9号、广林9号+50%蜜糖水、尾巨桉无性系3229、3229+50%蜜糖水、尾赤桉无性系186、186+50%蜜糖水、隆缘桉、隆缘桉+50%蜜糖水条件下对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（7.1d），无食物条件下的雌成虫历期最短（2.5d）；各个品系之间对雌成虫发育历期的影响无明显差异，50%蜜糖水混合各个品系的嫩叶对雌成虫的发育历期明显高于各个品系单独的嫩叶条件下的发育历期，但混合物还是低于单独50%蜜糖水条件下雌成虫的发育历期。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。

关键词: 桉树枝瘿姬小蜂食料发育历期怀卵量

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

Abstract:

Thirteen different foods including no food, water, 50% honey, E. urophylla × E. camaldulensis DH201, DH201+50%honey, E. grandis × E. urophylla, E. grandis × E. urophylla+50%honey, E. urophylla × E. grandis 3229, 3229+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 (7.1d), 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.

Key words: Leptocybe invasa, different food, development period, number of eggs impregnated

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