Literature DB >> 3987876

Defensive steroids from a carrion beetle (Silpha americana).

J Meinwald, B Roach, K Hicks, D Alsop, T Eisner.   

Abstract

The defensive anal effluent discharged by Silpha americana in response to disturbance contains a mixture of steroids stemming from a glandular annex of the rectum. The compounds have been characterized as 15 beta-hydroxyprogesterone (1, principal component), 5 beta-pregnan-15 beta-ol-3,20-dione (2), 5 beta-pregnan-3 alpha, 15 beta-diol-20-one (3), 5 beta-pregnan-7 beta, 15 beta-diol-3,20-dione (4), 5 beta-pregnan-3 alpha, 7 beta, 15 beta-triol-20-one (5), 5 beta-pregnan-16 alpha-ol-3,20-dione (6), and 5 beta-pregnan-3 alpha, 16 alpha-diol-20-one (7), none previously found in insects. Bioassays with jumping spiders showed compounds 1 and 6 to be feeding deterrents at the 1 microgram level.

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Year:  1985        PMID： 3987876     DOI： 10.1007/bf01966178

Source DB:  PubMed          Journal:  Experientia        ISSN： 0014-4754


  3 in total

1.  Cardiac glycosides in the defensive secretion of chrysomelid beetles: evidence for their production by the insects.

Authors:  J M Pasteels; D Daloze
Journal:  Science       Date:  1977-07-01       Impact factor: 47.728

2.  Lucibufagins: Defensive steroids from the fireflies Photinus ignitus and P. marginellus (Coleoptera: Lampyridae).

Authors:  T Eisner; D F Wiemer; L W Haynes; J Meinwald
Journal:  Proc Natl Acad Sci U S A       Date:  1978-02       Impact factor: 11.205

3.  Antifeedant action ofZ-dihydromatricaria acid from soldier beetles (Chauliognathus spp.).

Authors:  T Eisner; D Hill; M Goetz; S Jain; D Alsop; S Camazine; J Meinwald
Journal:  J Chem Ecol       Date:  1981-11       Impact factor: 2.626
  3 in total
  7 in total

1.  Defensive steroids from a carrion beetle (Silpha novaboracensis).

Authors:  J Meinwald; B Roach; T Eisner
Journal:  J Chem Ecol       Date:  1987-01       Impact factor: 2.626

2.  Secondary metabolites released by the burying beetle Nicrophorus vespilloides: chemical analyses and possible ecological functions.

Authors:  Thomas Degenkolb; Rolf-Alexander Düring; Andreas Vilcinskas
Journal:  J Chem Ecol       Date:  2011-06-11       Impact factor: 2.626

Review 3.  Synthesis and metabolism of vertebrate-type steroids by tissues of insects: a critical evaluation.

Authors:  L Swevers; J G Lambert; A De Loof
Journal:  Experientia       Date:  1991-07-15

4.  Mirasorvone: a masked 20-ketopregnane from the defensive secretion of a diving beetle (Thermonectus marmoratus).

Authors:  J Meinwald; Q Huang; J Vrkoc; K B Herath; Z C Yang; F Schröder; A B Attygalle; V K Iyengar; R C Morgan; T Eisner
Journal:  Proc Natl Acad Sci U S A       Date:  1998-03-17       Impact factor: 11.205

5.  Pregnanes from defensive glands of a belostomatid bug.

Authors:  J Lokensgard; R L Smith; T Eisner; J Meinwald
Journal:  Experientia       Date:  1993-02-15

6.  Ethyl 4-methyl heptanoate: a male-produced pheromone of Nicrophorus vespilloides.

Authors:  Wolf Haberer; Thomas Schmitt; Klaus Peschke; Peter Schreier; Josef K Müller
Journal:  J Chem Ecol       Date:  2007-12-13       Impact factor: 2.626

7.  Uptake, distribution and binding of vertebrate and invertebrate steroid hormones and time-dependence of ponasterone A binding in Calliphora vicina. Comparisons among cholesterol, corticosterone, cortisol, dexamethasone, 5 alpha-dihydrotestosterone, 1,25-dihydroxyvitamin D3, ecdysone, estradiol-17 beta, ponasterone A, progesterone, and testosterone.

Authors:  H J Bidmon; W E Stumpf
Journal:  Histochemistry       Date:  1991
  7 in total

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