| Autor: |
Leal, Walter S., Oehlschlager, Allan C., Zarbin, Paulo H.G., Hidalgo, Eduardo, Shannon, Philip J., Murata, Yasuhiro, Gonzalez, Lilliana, Andrade, Romano, Ono, Mikio |
| Předmět: |
|
| Zdroj: |
Journal of Chemical Ecology; Jan2003, Vol. 29 Issue 1, p15, 12p, 3 Diagrams, 13 Graphs |
| Abstrakt: |
Three amino acid-derived compounds were identified in extracts from the pheromone glands of the scarab beetle Phyllophaga elenans, i.e., L-isoleucine methyl ester (LIME), N-formyl L-isoleucine methyl ester (ForLIME), and N-acetyl L-isoleucine methyl ester (Ac-LIME). The compounds were characterized from their spectral data (MS and IR), confirmed by synthesis, and their absolute configurations were assigned by gas chromatography with a chiral phase column. The amount of LIME in calling females was ca. 2 µg/gland, whereas only traces of For-LIME and Ac-LIME (0.005% of LIME) were detected in fresh extracts. Regardless of the storage temperature, the amounts of the minor constituents in the extracts increased over time. Field tests showed that traps baited with For-LIME captured more beetles than control traps. Ac-LIME per se was not attractive, and it did not increase trap catches when combined with For-LIME. Traps baited with LIME caught ca. 150 beetles/trap/day, but catches did not increase with the addition of For-LIME and/or Ac-LIME in binary or tertiary blends. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink