The CDC Gravid Trap Model 1712 is particularly
good for collecting virus-positive mosquitoes since it was
designed by Dr. Paul Reiter of the U.S. Centers for Disease
Control to collect gravid Culex mosquitoes. Although
the Standard New Jersey and other
light traps will capture these mosquitoes, the specimens
are almost all nuliparous and therefore less likely to be
infected.
The CDC Gravid Trap was designed by
Dr. Paul Reiter of the Centers for Disease
Control, Division of Vector-Borne Disease for
the selective capture of gravid Culex mosquitoes.
By limiting captures to this class of
females, problems associated with calculation
of minimum virus infection rates were reduced.
The trap attracts females by means of
an oviposition medium contained in a pan
below the trap. The trap operates by creating
an upward current of air from within the
confines of the pan, so that the mosquitoes are
blown into the collection bag during their preoviposition
examination of the oviposition medium.
Oviposition Attractant
The hay infusion
is made by adding 1 lb (0.5 kg) of
hay to 30 gal (114 liters) of tap water, and allowing the infusion
to incubate for 5 days. The trap is
placed at the desired collection site at least 1 hr before
sunset and the pan is filled with 1 gal (4 liters)
of infusion solution. Captured mosquitoes are removed early
the following morning to ensure
maximum survival of the insects and any virus that may by present.
New medium is used each
night.
Included Items
The CDC Gravid
Trap Model 1712 includes:
trap
power cord
collection
bag
oviposition pan
instructions
Requirements
The trap draw is 0.125 Amps/hour at 6 volts.
Requires a 6 volt, 10 amp DC battery. See the battery and charger product
pages for options.
Options
NOTE: This daytime-collecting trap, cannot be ordered with
a PhotoSwitch.
NOTE: Since this is an updraft trap, an Air-Actuated Gate
is not necessary.
