Pregnanes from defensive glands of a belostomatid bug |
| |
| Authors: | J Lokensgard R L Smith T Eisner J Meinwald |
| |
| Institution: | (1) Department of Chemistry, Lawrence University, 54911 Appleton, Wisconsin, USA;(2) Department of Entomolgoy, University of Arizona, 84721 Tucson, Arizona, USA;(3) Section of Neurobiology and Behavior, Cornell University, 14853 Ithaca, New York, USA;(4) Department of Chemistry, Cornell University, 14853 Ithaca, New York, USA |
| |
| Abstract: | The aquatic bugAbedus herberti (Hemiptera: Belostomatidae) secretes a mixture containing four pregnanes (desoxycorticosterone (I), pregnenolone (II), progesterone (III), and 3 -hydroxy-pregn-5-en-20-one (IV)) from its cephalic glands. Pregnanes had previously been characterized from the defensive glands of aquatic beetles (Dytiscidae) and shown to be deterrent to fish. It may be specifically under predation pressure from fish thatA. herberti and Dytiscidae evolved their comparable defenses. |
| |
| Keywords: | Hemiptera C21-steroids chemical defense vertebrate hormones parallel evolution |
| 本文献已被 SpringerLink 等数据库收录！ |
|
