Biology Reference
In-Depth Information
inhibit host enzymes or interfere with the
normal regulatory systems of the host
undoubtedly play an important role. The types
and levels of such metabolites combined with
the degree to which an insect's cuticle can
prevent fungal invasion and its immune re-
sponse can prevent growth and will determine
the virulence of isolates employed for insect
control. The complexity of the invasive process
and large spectrum of toxins released when
spores contact a susceptible host is likely to limit
cross-resistance between chemical insecticides
and fungi, making fungal mosquito control an
attractive option (see Section 5.3.1).
Fig. 5.3.
Hyphal bodies of
Beauveria
bassiana
in haemocoel of mosquito, budding and germinating to
form mycelia. (Photo courtesy of Jennifer Stevenson.)
Fig. 5.4.
Mycelia of
Beauveria bassiana
breaking through the cuticle of
Anopheles stephensi
after death
of the mosquito. (Photo courtesy of Jennifer Stevenson.)
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