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Sex pheromone components of Diatraea considerata (Heinrich) (Lep., Pyralidae)
Author(s) -
Gries R.,
Dunkelblum E.,
Gries G.,
Baldilla F.,
Hernandez C.,
Alvarez F.,
Perez A.,
Velasoc J.,
Oehlschlager A. C.
Publication year - 1998
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/j.1439-0418.1998.tb01494.x
Subject(s) - sex pheromone , pheromone , biology , pyralidae , attraction , lepidoptera genitalia , population , botany , stereochemistry , chemistry , philosophy , linguistics , demography , sociology
Three aldehydes. ( Z )‐11‐hexadecenal ( Z 11–16:Ald), ( Z )‐7‐hexadecenal ( Z 7–16:Ald) and ( Z )‐13‐octadecenal ( Z 13–18:Ald), in a ratio of 74:23:3 are female‐produced sex pheromone components of the pyralid moth, Diatraea considerata (Heinrich). Compounds extracted from pheromone glands were identified by coupled gas chromatographic‐electroantennographic detection (GC‐EAD) and coupled GC‐mass spectrometry (MS). In field trapping experiments, Z 11–16:Ald, Z 7–16:Ald or Z 13–18:Ald singly were behaviourally inactive, but in ternary combination were as attractive as virgin females. Deleting either Z 11–16:Ald or Z 7–16:Ald from the ternary aldehyde blend strongly reduced attractiveness indicating that these two compounds are most important for attraction of males. Congeneric and sympatric female D. grandiosella (Dyar) also utilize Z 11–16:Ald and Z 13–18:Ald as sex pheromone components. Production of Z 9–16:Ald by female D. grandiosella and Z 7–16:Ald by female D. considerata contributes to the specificity of pheromone blends but does not prevent cross‐attraction of heterospecific males. In sugarcane plantations, aldehyde ( Z 11–16:Ald, Z 7–16:Ald and Z 13–18:Ald)‐impregnated lures may replace females as trap baits to monitor population densities of D. considerata.