Structure-activity relationship of synthetic pheromone components in sex communication of click beetles (Coleoptera, Elateridae).

It has been shown earlier that various geranyl and (E,E)-farnesyl esters are major components of natural sex pheromones of click beetles,Agriotes. In addition, some isomeric terpene esters have an inhibiting or synergistic influence upon the sex communication of some species ofAgriotes. In this paper the influence of synthetic terpene esters in pheromone compositions on the sex communication of differentAgriotes species occurring in different climatic zones has been studied.

[The action of a juvenile hormone synthetic analog--ether-farnesol on Xenopsylla cheopis fleas].

The authors tested the effect of the analogue of juvenile hormone (AJH), ether-farnesol, synthesized at the Institute of Chemistry of the Academy of Sciences of ESSR (the city of Tallin), on immature stages of X. cheopis. When testing the following doses of AJH (0.

[The action of a synthetic juvenile hormone analog on the flea Xenopsylla skrjabini].

In search of effective means of harmful fauna control, which could be practically safe for man and domestic animals, the authors tested efoxen-II, a juvenile insect hormone analogue (JHA) synthesized at the Institute of Chemistry, the Estonian Acad. of Sci. (Tallinn).

[Trial of the action of synthetic juvenile hormone analogs on fleas].

H-chlorphenyl ether of geraniol (1.5 to 0.05 %) caused the mortality of all preimaginal stages of fleas of the species C.