Bedbugs Cimex lectularius in Hostels

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Bedbugs (Cimex lectularius) in Hostels
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Bedbug, adult female
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Food for larvaes and adults

• Warm blood
• a beak (rostrum) is at the undersite of the head
• If the bug dont suck the rostrum is tight at the
  body.

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Undersite of the head with beak (rostrum)?
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Medical importance of bedbugs

• Transmission of pathogen germs is not known.
• but
• Skin-reaktions appear after blood-sucking
  typical pustules

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• The faeces are black droplets, typical for all
  bloodsuckling insekts.
• The eggs are white and shining, to find between
  the black spots of faeces.

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Life cycle of bedbugs
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Development time (averange)

• eggs ? 7 to 10 days (22 24C)?
• Larvaes ? 5 instar larves, ca. 40 days (22
  24C)?
• Adults females and males,
• nating relativ soon after hatching to adult
  insects
• Age of adult begbugs ca. 9 bis 18 months

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Bedbug, adult female, Egg und Larve
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Identification of infestation

• Who in a hostel can detect an infestation?
• A guest this is really bad
• A technical Person if the Hostel this is better,
  but even nit good, becaus he is not permanent
  there, and if he detects bedbugs it is purely
  coincidental
• Personal of Room-Service is optimal, because
  they are there every day. They must see waht is
  going on in the rooms!
• But personal must be trained!

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how to react

• immediately notify to a responsable person to
  start a bedbug-control,
• lock the room
• Inspection of all rooms above, below, left and
  right

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Bedbug - Control

• A professional Pestcontroller (PCO) must be
  colled. He knows what to do!
• Rooms must prepared all crack and crevices have
  to be opend
• Control must repeated after 7 or 10 days, because
  of the time of egg-development.

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Resistance-Problem

• Resistance against actove ingredients of
  insecticides.
• Resistances develop after many generations and
  under permanent contamination of the same
  ingredients.
• So Resistance is a hereditary process.

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Resistance-Problem

• In hostels, hotels, guesthouses etc. bedbug are
  allways imported !
• Very rarly it is known where they came from
• And one dont know, how often and white what
  insecticides the have been controlled over many
  generations
• To test if a resistance does exists ore not needs
  some weeks, but we dont have time to wait for the
  result!

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Resistance-Problem

• What can we do to be quite succesful?
• two treatments and
• the second treatment with another insecticide,
  that have an active ingredients from different
  chemical groop.
• Doing so we are succesful, because it is very
  seldom, that resistances exists to more than one
  avtices.