诱导木数量及空间大小对花绒寄甲产卵的影响

Effects of Number of Blocks and Spatial Size on Induced Spawning of Dastarcus helophoroide

为了确定诱导木数量及空间大小对花绒寄甲成虫产卵的影响,利用不同大小的塑料盒饲养花绒寄甲(Dastarcus helophoroide)成虫并放入不同数量的诱导木段诱导其产卵。结果表明,4组不同处理对成虫平均产卵量的影响不显著(p>0.05),但处理3(大养虫盒3块诱导木段)与其余3组试验相比在产卵量方面能诱发成虫保持持续产卵高峰期;处理1(大养虫盒1块诱导木段)卵块的平均数量47.92个,比处理4(小养虫盒1块诱导木段)多29.23%,差异显著(p<0.05),处理1与处理3间差异亦显著(p<0.05);处理1的平均产卵数量比较集中,60粒/卵块的频率最大,且基本符合正态分布,所以处理1有利于人工大量饲养花绒寄甲并适于制作卵卡在野外释放。

An experiment was conducted to study the effects of spatial size and number of blocks on induced spawning of Dastarcus helophoroide. D. helophoroide adults were reared in plastic containers in different sizes in which there were different number of blocks for inducing spawning. Results showed that the difference in average fecundity of the adults was not significant between the four treatment groups （p〉0.05）. Compared with the other three treatments, treatment 3 （big plastic container with three bocks） could induce the adults at sustained high levels of oviposition. The number of average egg mass of treatment 1 （big plastic container with one bock） was 47.92, which was 29.23% higher than that of the treatment 4 （small plastic container with one bock）. The differences in number of average egg mass were significant （p〈0.05） between treatment 1 and treatment 4 and between treatment 1 and treatment 3. Compared with other treatments, the average number of eggs per mass of treatment 1 showed a high concentration ratio, which accords with normal distribution. Treatment 1 is favorable for making egg cards released in the field to control Anoplophora glabripennis as artificial rearing of D. helophoroide.