摘要
黄野螟在我国白木香种植区重发、频发,导致被害树光秃无叶,呈现大片枯死状。前期发现黄野螟成虫触角感受器在其寄主定位、交配和产卵过程中起着重要作用。该研究采用扫描电镜技术对黄野螟触角感受器的类型、结构、数量、分布及雌雄之间的差异进行了系统观察和描述。结果显示,黄野螟触角呈丝状,包括柄节、梗节和鞭节3部分。其中柄节粗长,梗节短小,鞭节由约64个亚节组成,鞭节仅背面覆盖有大量鳞片。雌雄成虫触角上存在8种类型的感受器,即毛形感器、刺形感器、锥形感器、腔锥形感器、栓锥形感器、耳形感器、鳞形感器和Bohm氏鬃毛。不同类型的感受器在触角各亚节上的分布和数量各不相同,感器主要着生于触角鞭节腹面和侧面,柄节和梗节上仅有Bohm氏鬃毛和少许鳞形感器。毛形感器Ⅲ是雄虫触角所特有的感受器,其余各类型感受器在雌雄成虫触角上均有分布,但分布数量存在差异。上述结果为进一步研究黄野螟对寄主和配偶的识别机制,实现利用信息化学物质对其监测和防治奠定基础。
Heortia vitessoides is the most serious pest of Aquilaria sinensis,which is an economically important evergreen tree native to China and is the principal source of Chinese agarwood. In severe infestations,the insects completely eat up the leaves of A. sinensis,causing severe economic losses. In a more recent study,we found that the antennal sensilla of adult play important roles in the host location,mating and oviposition of H. vitessoides. Here,the external morphology of the antennal sensilla of H. vitessoides were examined using scanning electron microscopy. The result showed that the antennae of both sexes of H. vitessoides were filiform in shape,which consist of the scape,pedicel and about 64 segments of flagellomeres. Eight morphological sensilla types were recorded in both sexes,including sensilla trichodea,sensilla chaetica,sensilla basiconica,sensilla coeloconica,sensilla styloconica,sensilla auricillica,sensilla squamiformia and bohm bristle. Major differences were recorded in the distribution and quantity of different sensilla types in each segment of antenna. The sensillas are almost confined to the ventral and lateral surfaces rather than the back side of antennae. Antennal flagella contained the most sensilla while the scape and pedicel segments only contained bohm bristles and sensilla squamiformias. Sensilla trichodea Ⅲ were only found on male antennae. These results are discussed in relation to the possible roles of the sensilla types in the host location,mating and oviposition selection behavior of H. vitessoides.
作者
乔海莉
陆鹏飞
刘赛
徐常青
郭昆
徐荣
陈君
QIAO Hai-li;LU Peng-fei;LIU Sai;XU Chang-qing;GUO Kun;XU Rong;CHEN Jun(Institute of Mediciruil Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China;Key Laboratory for Silviculture and Conservation of Ministry of Education , Beijing Forestry University, Beijing 100083, China)
出处
《中国中药杂志》
CAS
CSCD
北大核心
2019年第10期2026-2031,共6页
China Journal of Chinese Materia Medica
基金
国家自然科学基金项目(81774015,81102747)
中国医学科学院医学与健康科技创新工程项目(2016-I2M-3-017)
关键词
白木香
黄野螟
触角感受器
超微结构
扫描电镜
Aquilaria sinensis
Heortia vitessoides
antenna sensilla
ultrastructure
scanning electron microscope(SEM)
