BED BUGS - Museum integrated pest...
Transcript of BED BUGS - Museum integrated pest...
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BED BUGS Life Cycle and Identification
content courtesy of
Louis N. Sorkin, Entomologist,
American Museum of Natural History
Not to be reproduced without permission
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BED BUGS: LIFE CYCLE AND
IDENTIFICATION
Understanding the lifecycle of bed bugs enables proper
identification during all stages
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Stages in the Life Cycle bar indicates 5mm scale
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EGGS
Eggs are 1 mm in length and produced with a glue to help them stick where they are placed
Empty egg cases on
mattress surface
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1st Instar
Once laid, the eggs hatch within 10-14 days. The newly hatched nymph is light in color. After one hour, the 1st instar nymph darkens.
After feeding the nymphs
appear red in color.
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Molting Shed Skins of 5th instar
nymphs (dorsal and ventral
views)
Top - adult female (one hour older below) with shed skin still attached. Bottom - adult female, recently molted, dark region is digested blood in the gut
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Uric Acid and Waste Material
An initial waste product is a uric acid secretion,
not feces, that is light in color.
uric acid
feces
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BED BUGS: IDENTIFICATION
The following slides show detailed views of bed bugs for
identification purposes
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Details of head and rostrum
Details of head and rostrum Ventral view of head
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Engorged adult bed
bug – lateral view
Adult bed bugs –
unfed (L.) and fed
(R.) – dorsal view
Adult Bed bugs -
dorsal & lateral views
Adult bed bugs – unfed (L.) and
fed (R.) – dorsal view
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Adult bed bug – ventral view
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FEEDING
Feeding leads to
engorgement and a more
swollen appearance.
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Bed bugs do not truly exist in colonies. They survive independently from one another, but
they do harbor together.
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A bed bug harborage contains droppings, eggs,
egg shells, shed skins, and insects in various
stages of the life cycle.
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DETECTION OF INFESTATIONS
The following images of bed bug infestations give examples of the
range of locations in which they can be found.
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Edge of Matress
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On underside of mattress tab -
not visible from above
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On a wall molding
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In a CD collection
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Adult, nymphs and eggs and
droppings visible on wood
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German cockroach nymph and bed
bug nymphs, mixture of feces
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Feces showing evidence of
infestation on door hinge
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Bed bug infestations can be transferred from
one bed to another in one household through
bedding being briefly used on both beds.
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Bed bugs can harbor in the chandelier
base and also drop from the ceiling
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Electric and cable conduits can serve
as an entry route and harborage area
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MONITORING DEVICES
The following slides give examples of some of the products that
can be used to monitor for bed bug infestations.
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Examples of Sticky Tape Monitors
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Catchmaster Bedbug Detection System
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Examples of “climb-into” monitors
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CO2 Monitor
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Dr. Changlu Wang, Rutgers University
Dry Ice Detector Device
(Now produced by Bed Bug Central)
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Bed Bug Beacon
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Expired metrocards used to
aid in detection in crevices