Zoology

Photo 1: Tasmanian Wolf

Julian Carter: Zoological Conservation Officer

Tel: +44 (0)29 2057-3230
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Looking after dead animals!

The NMGW has a large and diverse zoological collection. This comprises of specimens that occur throughout the animal kingdom, from tiny insects to the impressive skeleton of a Humpback whale! Looking after these collections is a challenging task for the museum conservator. Not only is the range of animals large and varied, but so are the methods used to preserve them. Often these methods depend on the type of animal and what use is required from the specimen. As a result, depending on what it is, a specimen can be slide mounted, fluid preserved, dried, frozen, embedded in resin, a study skin, a skeletal preparation, a taxidermy mount...

The zoological collections demonstrate the great diversity of the animals that make up our world. The collections form the basis of knowledge for display, education and research. Often the specimens represent extinct or highly endangered animals.

Photo 1 above shows a taxidermy mount of the famous Tasmanian Wolf, which was hunted to extinction by the 1930's. The NMGW specimen was in poor condition and extensive work was required to clean and repair the specimen for subsequent display.

Photo 2: Bird Skins
However, most of the 3 million plus zoological specimens will not be used for display. These form the research collections.

Photo 2 shows some bird study skins, which have been prepared with their wing and beak patterns on display making the specimens easier to use for visiting researchers, students and artists. In addition to the actual specimens the conservator needs to look after a whole range of models developed to help interpret the animals. Many of these models are now historic, dating from the 19th century.

Photo 3: model of silk moth

Photo 3 shows a model of a silk moth made in the late 1800's which needs clean stable storage if it is to survive another 100 years.

As well as cleaning, conserving and repairing specimens, an important role of the conservator is collection monitoring. The aim of monitoring is the early detection of potential problems, allowing rapid and effective action to be carried out as needed, rather than when it is too late, and is commonly known as preventative conservation.

Photo 4: beetle damage

Two key problems face our collections; pest damage and environmental damage from temperature, pollution and water.

Photo 4 and 5 show the effects of insect pests on the collections which can, if left unchecked, completely destroy a whole range of specimens.

Photo 5: moth damage to bird specimen
Many of our collections also need regular maintenance to ensure that the conditions for preservation of the animal specimens are being maintained.

Photo 6 shows a digital density meter being used to ensure that the alcohol used in the preservation of our fluid collections is at the correct level.

Photo 6: using density meter to measure alcohol level

The ultimate aim is to preserve our collections, not for now, but for the future. For this conservator is going to have to deal constantly with the gradual degradation processes of time. Added to this, the conservator now has a new area for consideration: the implication of any conservation action on the preservation of the DNA in a specimen. Museum specimens are being increasingly used for studies requiring information held in the DNA, a role which conservation at NMGW is helping to develop further.

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