(11Z)‐hexadec‐11‐enal enhances the attractiveness of Diatraea saccharalis main pheromone component in wind tunnel experiments

Abstract

GC-EAD and GC-MS analysis of pheromone gland extracts of sugarcane borer, Diatraea saccharalis, revealed two antennally active compounds, (9Z,11E)-hexadeca-9,1-dienal and (11Z)-hexadec-11-enal, in approximately 10 : 1 ratio. Various doses of identified compounds were investigated in wind tunnel experiments individually and in a 10 : 1 ratio. At all tested doses (9Z,11E)-hexadeca-9,1-dienal alone elicited upwind orientation and source location only in a minority of tested males. An admixture of (11Z)-hex-11-enal enhanced the attractiveness of (9Z,11E)-hexadeca-9,11-dienal significantly. This two-component blend (100 pg) was as attractive as natural pheromone extracted from three female pheromone glands. The data suggest that (11Z)-hexadec-11-enal is a part of the D. saccharalis sex pheromone.

Host plant or geographic barrier? Reproductive compatibility among Diatraea saccharalis populations from different host plant species and locations in Argentina

“…The reproductive isolation between populations may rapidly develop in response to a variety of factors. Such factors may be differences between environments, low dispersal capacity, geographical barriers, insect host plant association, different agricultural production systems, composition of sex pheromones, and different colonization and foundation events (Butlin, ; Rice, ; Burke & Arnold, ; Kalinova et al., ; Bickford et al., ; Cortés et al., ; Joyce et al., ; Pavinato et al., ). Therefore, it is to be expected that a genetic mechanism that could influence the evolution of reproductive isolation does not act in the same way in the various combinations of SCB populations studied.…”

Toward the Identification of the Sex Pheromone of Diatraea indigenella Dyar & Heinrich (Lepidoptera: Crambidae): Calling Behavior and Chemical Structure of a Major Component

“…Similar results are reported in the literature (Cabrera et al 2001, Yang et al 2002, 2007, Kawazu et al 2007, Yu-yong et al 2009. The component (Z,E)-9,11-hexadecadienal is also the major sex pheromone component from the phylogenetically related specie Diatraea saccharalis (Fabricius) (Svatoš et al 2001, Palacio Cortés et al 2010, but the attractiveness of this compound is lower than that of caged virgin females in field experiments (Hammond & Hensley 1971, Perez & Hensley 1973, Batista-Pereira et al 2002, Kalinová et al 2005.…”

Identification of two components of the female sex pheromone of the sugarcane‐borer Diatraea flavipennella (Lepidoptera: Crambidae)

“…Such an outcome was somewhat unexpected because the sex pheromone of D. saccharalis females has received considerable research attention (Patrick and Hensley 1970;Hammond and Hensley 1971;Perez and Hensley 1973;Svatoš et al 2001;Batista-Pereira et al 2002;Santangelo et al 2002) and has been shown to be highly attractive to D. saccharalis males in laboratory experiments. Indeed, the effect exerted by a two-component pheromone comprising (9Z,11E)-hexadecadienal and (Z)-11-hexadecenal was reportedly comparable with that of D. saccharalis virgin females in laboratory wind tunnel experiments (Kalinová et al 2005).…”

“…Z 11–16:Ald has also been found as a minor component in extracts of D. saccharalis females (Batista‐Pereira et al. 2002) where it enhances significantly the attractiveness of the main sex pheromone component (9 Z ,11 E )‐hexadecadienal (Kalinová et al. 2005).…”

“…2002) and has been shown to be highly attractive to D. saccharalis males in laboratory experiments. Indeed, the effect exerted by a two‐component pheromone comprising (9 Z ,11 E )‐hexadecadienal and ( Z )‐11‐hexadecenal was reportedly comparable with that of D. saccharalis virgin females in laboratory wind tunnel experiments (Kalinová et al. 2005).…”