© Benaki Phytopathological Institute
Toxicity of essential oils against
Tribolium confusum
35
adults with malformed elytra and morpho-
logical deformities ranging from aberration
of the tarsi to legs reduced to stump-like ap-
pendages. For all essential oils, the propor-
tion of the pupae trapped in the puparium
was less than that of the adultoids, with the
exception of
L. hybrida,
where high doses
had the opposite effect (Fig. 1).
Discussion and Conclusions
The essential oil vapours of
L. hybrida,
L. no-
bilis
,
T. orientalis,
C. sinensis
and
C. limon
ex-
hibited a strong toxic action against the im-
mature stages and adults of
T. confusum
. The
fumigant toxicity of these essential oils de-
pended on the insect developmental stage.
Fig.1.
Effects of essential oil vapours on pupae of
Tribolium confusum
.
1...,27,28,29,30,31,32,33,34,35,36 38,39,40,41,42,43,44,45,46,47,...52