科罗拉多马铃薯甲虫的嗅觉：马铃薯叶甲属触角感器的超微结构

Olfaction in the Colorado potato beetle: ultrastructure of antennal sensilla in Leptinotarsa sp.

作者信息

Sen A, Mitchell B K

机构信息

Department of Entomology, University of Alberta, Edmonton T6G 2E3, Alta., Canada.

出版信息

J Biosci. 2001 Jun;26(2):233-46. doi: 10.1007/BF02703647.

DOI:10.1007/BF02703647

PMID:11426059

Abstract

Sensillae on the antennae of the Colorado potato beetle, Leptinotarsa decemlineata are described using scanning (SEM) and transmission (TEM) electron microscopy and compared with SEM observations of antennal sensilla in L. haldemani and L. texana. In all the three species, 13 distinct sensillar types were identified with a higher density of sensilla in the more polyphagous species, L. decemlineata than in the moderately host specific L. haldemani and the highly host specific L. texana. Cuticular specializations and the predominance of olfactory sensilla are discussed in relation to host specificity in the three species.

摘要

利用扫描电子显微镜（SEM）和透射电子显微镜（TEM）对科罗拉多马铃薯甲虫（Leptinotarsa decemlineata）触角上的感器进行了描述，并与对哈氏马铃薯甲虫（L. haldemani）和德克萨斯马铃薯甲虫（L. texana）触角感器的扫描电子显微镜观察结果进行了比较。在这三个物种中，共鉴定出13种不同类型的感器，多食性的科罗拉多马铃薯甲虫触角上的感器密度高于寄主专一性中等的哈氏马铃薯甲虫和寄主专一性高的德克萨斯马铃薯甲虫。结合这三个物种的寄主专一性，讨论了表皮特化和嗅觉感器的优势。