Multifunctional communication inRiptortus clavatus (Heteroptera: Alydidae): Conspecific nymphs and egg parasitoidOoencyrtus nezarae use the same adult attractant pheromone as chemical cue
摘要:
The bean bug, Riptortus clavatus lays scattered eggs (as opposed to the egg masses of pentatomids) on host as well as nonhost plants. Therefore, the first feeding stage (second-instar) nymphs emerging from eggs laid on nonhost plants need a signal that enables them to locate a food source at the lowest energy cost. Male-released (E)-2-hexenyl (E)-2-hexenoate, (E)-2-hexenyl (Z)-3-hexenoate, and myristyl isobutyrate play the double role of attractant pheromone for adults as well as aggregation pheromone, which enables the second-instar nymphs to find the host food plant. These male-specific semiochemicals are released only when foodstuff is available. On the other hand, females of Ooencyrtus nezarae, the most effective parasitoid of the host in Kumamoto, Japan (where the field experiments were conducted), utilize these semiochemicals as kairomones in order to locate the potential host community. Field experiments revealed that the synthetic pheromone rivaled 10 live males in the attraction of adults and second-instar nymphs. Captures of the egg parasitoid O. nezarae females in cylindrical sticky traps were significantly higher in traps baited with the synthetic semiochemicals than in control traps. The number of females captured was significantly higher than the number of males, although the captures in the sticky suction trap system revealed that the populations of male and female were not significantly different.
作者:Christian Chapuis、David Skuy、Claude-Alain Richard
DOI:10.2533/chimia.2019.194
日期:——
This account corresponds to the presentation given by the main author on the occasion of the 2nd Swiss Industrial Symposium in Basel (October 19th , 2018). After a short historical introduction to methyl-jasmonate and methyl-epijasmonate, it essentially focuses on the reported more promising industrial approaches devoted to the synthesis of these naturally occurring odorants isolated from jasmine flowers
The invention relates to Fatty Acid Acetylated Salicylate Derivatives; compositions comprising an effective amount of a Fatty Acid Acetylated Salicylate Derivative; and methods for treating or preventing an inflammatory disorder comprising the administration of an effective amount of a Fatty Acid Acetylated Salicylate Derivative.
NOVEL CERAMIDE DERIVATIVES HAVING AGONISTIC EFFECTS ON EPIDERMAL CANNABINOID RECEPTORS, AND PHARMACEUTICAL OR COSMETIC COMPOSITION CONTAINING SAME
申请人:NEOPHARM CO., LTD.
公开号:US20160272578A1
公开(公告)日:2016-09-22
The present invention relates to a novel pseudoceramide derivative, a pharmaceutically acceptable salt thereof or a solvate thereof, and a pharmaceutical or cosmetic composition containing the same as an active ingredient. The novel pseudoceramide derivative of the present invention is expected to be very useful for treating or preventing skin diseases by activating cannabinoid receptors. In addition, the novel pseudoceramide derivative, the pharmaceutically acceptable salt thereof or the solvate thereof, of the present invention, has a simple synthesis process compared with a known cannabinoid receptor antagonist so as to reduce processing time and curtail material costs, and thus is economical, and has advantages such as easy emulsification during the formulation of cosmetic products or medical supplies.
The invention relates to fatty acid acylated salicylate derivatives; compositions comprising an effective amount of a fatty acid acylated salicylate derivative; and methods for treating or preventing an inflammatory disorder comprising the administration of an effective amount of a fatty acid acylated salicylate derivative.
The invention relates to fatty acid acylated salicylate derivatives; compositions comprising an effective amount of a fatty acid acylated salicylate derivative; and methods for treating or preventing an inflammatory disorder comprising the administration of an effective amount of a fatty acid acylated salicylate derivative.