When
the Museum's 110 year-old Arctic caribou needed urgent conservation
care the University and Iowa City community came to the rescue. |

The caribou was collected
in 1892 by UI graduate student, Frank
Russell.
Retired from display 30 years ago due to declining
condition, the specimen nonetheless retains considerable historic
and scientific value.
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A regular inspection
of the collection by the staff uncovered Dermestid beetles multiplying
on the caribou.
Dermestis
species are common scavenger insects found everywhere devouring
fur, feathers, skin and bones of dead animals. They can do serious
damage in a Musem if they go undiscovered for very long.
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How do museums get rid
of bugs?
Chemicals are
rarely used in museums for pest control today. Instead, museums
rely on cleanliness and regular inspections to prevent infestations.
Few chemicals
have been found safe for humans without special training and expensive
safety equipment. Also, very little is known about chemicals' effects
on specimens. Evidence is growing that many damage the things curators
are trying to protect.
Today when
bugs are found in Museums the-treatment of choice is to kill them
by deep-freezing. Unfortunately, a regular walk-in or frost-free
freezer doesn't get cold enough to kill the insects which are adapted
to survive normal winter temperatures. Millard Refrigerated Services
came to the rescue!
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Shrink-wrapping a caribou for the freezer:

Sealing the
specimen air-tight keeps water from condensing on it when it is
removed from the freezer.
Museum students
Cathy Diebold and Sara Laue constructed the caribou's three-layer
space-suit from plastic sheeting and duct tape. It retained
its vacuum for the complete 60 days of treatment.
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Many thanks are owed to the University's Surplus Sales department
and Joe Deutsch, Tim Gerlits and "D" Alexander for their
assistance with transporting the caribou across town to Millards.
Thanks too to Bob Kutcher, campus moving manager, who contributed
a dolly to make the moving easy.
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Scott
Gunder, Millard Refrigerated Services Plant Manager.
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Scott and
his crew at Millards managed the entire 90-day process of cycling
the caribou in and out of the freezer to ensure all the beetles
were killed.
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Treatment finished,
and back in the Museum, Sara Laue inspected the caribou and vacuumed-up
the dead beetles. |