椰心叶甲取食的寄主选择

目的]探讨椰心叶甲对寄主植物的适应性及寄主植物对椰心叶甲种群暴发的影响。方法]利用自制装置研究椰心叶甲对椰子、加拿利海枣、美丽针葵和老人葵4种寄主植物的取食选择。结果]椰心叶甲对不同寄主的取食选择差异显著,在椰子上的着虫数最多,与老人葵显著差异,加拿利海枣和美丽针葵着虫极少,二者无明显差异。取食量规律与着虫数呈正相关。结论]研究结果为椰心叶甲的综合防治提供了理论依据。

Host Selection for Feeding of Brontispa longissima (Gestro)

Objective] The aim was to explore the adaptation of Brontispa longissima (Gestro) to host plants and the effect of host plants to occurrence of Brontispa longissima (Gestro) population.Method] Cocos nucifera,Phoenix canariensis,Phoenix roebelenii and Washingtonia filifera were used as test host plants to research the host selection for feeding of Brontispa longissima.Result] The difference was significant in feeding choice between different hosts.Cocos nucifera had the maximum number of insects trapping,which had significant difference with Phoenix roebelenii.Phoenix canariensis and Phoenix roebelenii had a few insects trapping,and there was no significant difference between them.There was a positive correlation between Brontispa longissima trapping and feeding.Conclusion] The result can provide theoretical basis for comprehensive prevention and control of Brontispa longissima (Gestro).