The document discusses arthropods, specifically insects, displayed at the Aquazoo Düsseldorf. It notes that insects are the most diverse class of animals, comprising over 60% of known species. The Aquazoo Düsseldorf has a 103 square meter insectarium to educate visitors about arthropod diversity and biology. It uses interactive displays and a website to explain insect taxonomy and species. The insectarium houses 22 living insect exhibits across two floors for visitors to observe.
4. 2 WAZA news 3/12
Wolfgang W. Gettmann – Aquazoo Düsseldorf
Arthropods: Insects & Co Are Part
of a Zoo Like Lions or Great Apes
The Invertebrate World at Aquazoo Düsseldorf
Zoo departments dedicated to the It is often surprising to learn that produce valuable fabrics while other
presentation of arthropods, particu- insects constitute the class of animals insects produce valuable substances
larly spiders and insects, are usually that by far covers the most diverse for use in pharmaceuticals and fruit
called „insectariums“. The insectari- ranges of species. To date, around flies (Drosophilia) are the „pets“ of
um at the Aquazoo/Loebbecke-Muse- one million animals have been sci- genetic research. Even forensic sci-
um in Düsseldorf is able to work from entifically described, which is more ence uses knowledge about insects
a long tradition as it was established than 60% of all known species. And to help solve crimes (entomological
in 1976 when the institute was still, as countless insects and other arthro- forensics). And, last but not least,
a result of the destruction caused dur- pods (spiders, isopods, crustaceans, more and more people are beginning
ing World War II, temporarily housed myriapoda, etc.) remain undiscov- to keep and breed insects, spiders
in an air-raid shelter. It was here that ered. It is remarkable that the general and other arthropods as pets with the
the presentation already started to population is not very familiar with intention of studying these animals
become a highlight and very popular these animals and that it is becom- at home, of opening a „window on
with visitors. The dissemination of ing increasingly less knowledgeable nature“ or of just relaxing and observ-
knowledge about the actual „rulers of about them as time progresses. Few ing them.
the world“ – as insects are frequently school students, for example, are
known – was then already the objec- able to name any species of insect, The Aquazoo exhibits arthropods over
tive and had been declared as such much less say anything about how an area of 103 square metres. There
at a time when zoos did not always they live or behave. It is even fre- is also a further 23 square metres of
regard insectariums as essential. The quently too much for people intend- space and additional rooms behind
presentations developed at the „zoo ing to be trained as animal keeper to the terrariums which are not open
bunker“, as the people of Düsseldorf list five species of insects or to explain to the public that the keepers use for
often called the institute, were so the difference between insects and their work and for breeding insects.
highly informative and timeless that spiders. The first thing that comes to The presentation is divided into sec-
to this day, 25 years after they were people’s minds when arthropods are tions by a giant star-shaped combi-
relocated to the new premises in the mentioned is that insects are „pests“, nation of showcases and a partition
Nordpark in 1987, they are still used that they can cause damage and wall, which uses illuminated graph-
to inform broad audiences about the that they are detrimental to plants, ics and display cases to explain the
life of arthropods. wooden structures and food. Some basic structures of nine insect orders.
people will perhaps also say that as A screen with „trackball“ allows
parasites they are harmful to other visitors to penetrate deeper into the
organisms and that they transmit subject matter by providing informa-
diseases. But insects can also be tion about the „insect of the year“, by
beneficial to humans. For instance, showing the Aquazoo’s special Inter-
around 500 species of insects repre- net site that focuses on insects to be
sent a valuable source of protein to called up, by enabling the world of
many people around the world and insects in indigenous deciduous for-
many insects also play a major role as ests to be explored and by presenting
pollinators in agriculture. It wouldn’t a simple slide show of the world of
be possible to make honey without arthropods. The Aquazoo’s Internet
bees, for example, and ichneumon site does not only list many of the
wasps help control pests, silkworms species according to the Arachnida,
Crustacea, Myriapoda and Hexapoda
groups that are or that were formerly
kept at the Aquazoo, it is also home
to a picture gallery, distribution maps
and tips for breeding specific species.
10. 8 WAZA news 3/12
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When dealing more specifically, North American Butterfly Association, One would not expect much from
a great example of zoos helping specific projects dealing with habitat such a study as spiders but it was
an individual species can be seen specialists in small populations to ac- noted that during the creation of
in a collaborative effort with the tual captive propagation for re-release. a series of booklets on the Biodiver-
Lincoln’s Children Zoo, Henry Doorly Species that zoos are involved in in- sity of Toronto, that spiders had not
Zoo’s Berniece Grewcock Butterfly clude: Mitchell’s Satyr, the Oregon Sil- been looked at in the region for 100
and Insect Pavilion, the State of verspot, Taylors Checkerspot, Schaus years. In cooperation with the Royal
Nebraska’s Game and Parks Depart- Swallowtail, the Miami Blue, Fedder’s Ontario Museum, the Rouge Park and
ment and the US Fish and Wildlife. Blue, the Puget Blue and of course the the Canadian Institute of Biodiversity
The group has teamed up to work on Karner Blue Butterfly. at the University of Guelph, Toronto
the Salt Creek Tiger Beetle (Cicindella Zoo worked on this survey. Results
nevadica lincolniana). Considered In many cases, the state in which from this short study came up with
one of the most endangered species a specific butterfly exists is ap- 125 species, 30 of which were new for
in the United States with numbers proached by the staff of that zoo or the Toronto region and one was new
only in the 100’s, it is listed as highly chooses to approach that zoo for for Canada. On top of this a speci-
endangered. The species comes help. The experts within the state, men of Ontario’s only mygalomorph
from an extremely rare habitat quite determines the need for a captive (primitive spiders containing the
near human settlements and thus breeding project and they see the tarantulas) was found. The Northern
has had problems. The zoos wish to zoo as being the experts in that field. Purse-web Spider, Sphodros niger
breed and head start specimens for This shows the influence that zoos has only been found approximately
re-introduction into several protected have made over the past few years. 12 times in Canada and officially
areas where the beetle once dwelt. It One good example of this influence only just over 100 times in its entire
is the role of the zoos to use their ani- is the Karner Blue Butterfly. Several range. Its rarity has placed it on the
mal husbandry expertise to develop zoos including Roger William’s Park proposed endangered species list for
protocols and provide the numbers to Zoo, Toledo Zoo, Detroit Zoo and Canada. This represented a new site
make a difference. Toronto Zoo have been involved with not known before for this extremely
this species for 20 years. The suc- rare species.
Freshwater mussels have suffered cess of many education and captive
drastically over the past several years. breeding for re-release projects have This is just an example of what has
Pollution and the creation of dams shown federal and state officials that not been published in regards to
for hydro electricity have played partnerships with zoos work. conservation efforts ongoing in North
major roles as stressors for these America by zoos. This short discus-
species. The Toronto Zoo has started Most of the information so far writ- sion has not covered work done on
an awareness program for species in ten has been published already. But Partula snails, Mossy rock tarantulas
southern Ontario, but South Carolina it must be mentioned that there is or blind cave crayfish. There is just
Aquarium and Columbus Zoo are a vast amount of work being done on too little space. It is needless to say
working on programs for 10 years invertebrates for conservation that that the zoos of North America are
or more. Columbus Zoo has built has not yet been published. Toronto making their mark in the efforts to
a special facility capable of breeding Zoo can be an example of this. It has support invertebrate conservation.
and maintaining rare mussels found been mentioned that the Zoo has be- Partnerships have developed and
in the State of Ohio. The facility uses gan a program of awareness for the zoos are being appreciated for what
natural river water to maintain their freshwater mussels in Ontario and they can offer.
populations. If some form of disaster that it has been involved in the effort
occurs on the river, the facilities can to return the Karner Blue butterfly to
maintain through an internal re-circu- Ontario. What isn’t mentioned is that
lating system protecting the speci- they have been involved in butterfly
mens from possible fatal mishaps. surveying for the Rouge Park and the
eastern Toronto Region for 19 years,
Butterflies are by far the most worked they have helped in surveying odo-
on group of invertebrates within zoos. nates (dragonflies and damselflies)
Programs range through several fields for over three years, they hosted the
of expertise and levels of involve- first 24 hour “bioblitz” that identified
ment. The BFCI alone is supported by over 1300 species in its first attempt
over 40 zoos. There is the monitoring and recently they were the lead in
of monarch butterfly populations a survey of the spiders within Rouge
through Monarch Watch; annual but- Park, an urban wildlife park where
terfly surveys that record data for the Toronto Zoo resides.