Mixed Exhibit overview
The following 2023 post by
@Swampy details the mixed-species reptile exhibits at Chester Zoo - some of these are no longer current, and obviously due to the nature of the thread from which it originates (focusing on mixed reptile exhibits throughout zoological collections) it only covers invertebrate, fish and amphibian taxa where these occur in the same exhibit as a reptile, but it nonetheless provides a good overview. As such I reproduce it below:
Presently at Chester:
- Western Gaboon Viper (Bitis rhinoceros) + fruit beetles (Mecynorhina ugandensis)
-Reticulated python (Malayopython reticulatus) + tokay geckos (Gekko gecko)
-Parson's chameleon (Calumma parsonii) + southeastern girdled lizard (Zonosaurus maximus)+ Henkel's leaftailed gecko (Uroplatus henkeli)
-Parson's chameleon (Calumma parsonii) + southeastern girdled lizard (Zonosaurus maximus) +giant day gecko (Phelsuma grandis) + Cuvier's Madagascar swift (Oplurus cuvieri)
-Green crested lizard (Bronchocela cristatella) + Fea's flying frog (Zhangixalus feae)
-Sunda gharial (Tomistoma schlegelli) + painted batagur (Batagur borneoensis) + various small fish
-Hispaniolan giant galliwasp (Caribicus warreni) + mountain chicken (Leptodactylus fallax)
-Western girdled lizard (Zonosaurus laticaudatus)+ Cuvier's Madagascar swift (Oplurus cuvieri)
-gold dust day gecko (Phelsuma laticauda) + whitespotted reed frog (Heterixalus alboguttatus) + golden mantella (Mantella aurantiaca)
-Amazon basin emerald tree boa (Corallus batesii) + dyeing poison dart frog (Dendrobates tinctorius 'azureus') + imitator dart frog (Ranitomeya imitator)
-casqueheaded iguana (Laemanctus longipes) + golden poison dart frog (Phyllobates terribilis)
-emerald tree skink (Lamprolepis smaragdina) + cinnamon frog (Nyctixalus pictus) + Bornean rock frog (Staurois parvus) + vampire crab (Geosesarma hagen)
-free-roaming sun skinks (Eutropis multifasciata) and emerald tree skinks (Lamprolepis smaragdina) in Monsoon Forest, including access to the Tomistoma mix mentioned above
-free-roaming Jamaican anoles (Anolis grahami) in the butterfly house, along with Trinidad stream frogs (Mannophryne trinitatis)
Tuatara and other significant captive breedings.
Although Chester Zoo has achieved several noteworthy captive breedings within this category, including (as I will detail shortly) involvement in a wide range of reintroduction projects, I believe that the fact that the collection has now successfully bred Tuatara on several occasions - something which
no other zoological collection outside of New Zealand has ever managed - is highly significant, worthy of particular praise, and overshadows anything which Prague can boast in this regard.
Other captive breeding records of particular note include the first captive breeding of Omani Blind Cave-Fish worldwid, the import and first European breeding of Titicaca Lake Frog and hence responsibility for the current presence of the species throughout a large number of European collections, and (as discussed both upthread and below) the import and breeding of Tequila Splitfin, directly preventing the global extinction of this taxon.
Captive Breeding: Reintroduction Projects
As I've mentioned several times already, a significant amount of category-specific captive breeding at Chester Zoo - both at the present time and in the recent past - has
directly contributed to ongoing reintroduction projects both within the UK and overseas. To the best of my knowledge, these include the following:
- Partula varia and Partula rosea - thousands of snails bred at Chester Zoo were among those which were reintroduced to French Polynesia from 2015 onwards (further information)
- Fen Raft Spider (Dolomedes plantarius) - this wetland species, which is critically-endangered within the UK and was believed to be on the brink of local extinction at the start of the 2010s, was the focus of a captive-breeding and reintroduction programme throughout the first half of said decade, with Chester breeding several hundred individuals for this purpose (further information)
- Greater Bermuda Landsnail (Poecilozonites bermudensi) - this island endemic species was believed to have become extinct in the 1970s, but after it was rediscovered in 2014 individuals were exported to Chester Zoo and London Zoo for the purposes of building a captive population. Subsequently, both zoos have sent snails back to Bermuda for reintroduction, with one article in 2019 stating that Chester had been responsible for the reintroduction of thousands of individuals that year alone (further information)
- Lesser Bermuda Landsnail (Poecilozonites circumfirmatus) - this island endemic species is believed to be extinct in the wild, with the last sighting having occurred in 2004, but small numbers had been taken into captivity by London Zoo a few years previously, with Chester subsequently also receiving stock. Chester started reintroduction of captive-bred stock in 2020, with further captive breeding and reintroductions having followed (further information)
- Desertas Landsnail (Discula lyelliana, Geomitra coronula, Geomitra grabhami, Atlantica calathoides) - all four of these Madeiran endemic species were believed extinct until rediscovery of tiny numbers in the late 2000s and early 2010s, with Chester Zoo being responsible for the import of wild stock and establishment of a captive breeding programme; the first reintroductions of Chester-bred lyelliana and coronula took place in late 2024, with reintroductions of the remaining two taxa planned (further information)
- Large Heath Butterfly (Coenonympha tullia) - this species used to be commonplace throughout the lowland bogs and peatlands of Lancashire, Merseyside and Greater Manchester, but significant population decline and local extirpations took place throughout the 19th and 20th centuries; Chester Zoo has been involved throughout the 2010s and early 2020s in the collection of individuals from surviving populations, their captive breeding and reintroduction to former breeding sites (further information)
- Bermuda Skink (Plestiodon longirostris) - this critically-endangered species is the only extant terrestrial vertebrate endemic to Bermuda, with a captive-breeding programme for the taxon established by Chester in the early 2010s and a first breeding of the species taking place in 2017; I believe that the breeding population has continued to grow and that reintroductions have now commenced, but cannot find any news articles confirming the latter.
- Tequila Splitfin (Zoogoneticus tequila) - this goodeid is endemic to a single pool in the Ameca River basin of northwest Mexico, and was ultimately extirpated in the wild in the late 1990s; however it is now fairly commonplace in captivity as a result of stock imported by Chester Zoo in 1995 shortly before its extinction in the wild, and the subsequent successful captive breeding of the species. Reintroductions of the species have taken place in recent years, with the individuals in question being descended from the original Chester import (further information)
- Montseny Brook Newt (Calotriton arnoldi) - this Critically Endangered species is endemic to a small handful of mountain streams on the slopes of the Montseny Massif in northern Catalonia, with a wild population estimated at around 1000 individuals; Chester Zoo became involved in the captive-breeding programme for the species managed by Barcelona Zoo in 2017, and now regularly breeds the species and returns adults and larvae to Spain for reintroduction - with reintroductions of Chester-bred stock having taken place as recently as May 2024 (further information)
- Sand Lizard (Lacerta agilis) - already discussed upthread, with captive breeding and reintroductions having taken place at Chester since the 1990s.
I'd be interested to hear from anyone who knows of any I have missed!
EEP Programmes
Chester Zoo is the EEP/ESB coordinator for the following category species/groups:
Goodeidae
Mountain Chicken (Leptodactylus fallax)
Lake Patzcuaro Salamander (Ambystoma dumerilii)
Olm (Proteus anguinus)
Palawan Forest Turtle (
Siebenrockiella leytensis)
Henkel’s Leaf-tailed Gecko (Uroplatus henkeli)
Komodo Dragon (
Varanus komodoensis)
It will be noted that since the Chester vs Zurich match within this category earlier this year, Chester has added an additional EEP/ESB programme to its already-impressive roster with the creation of a breeding and conservation programme for Olm - perhaps the most interesting and unusual of all native European ectotherms!
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I think I have made a pretty solid case; although Prague does (as I have previously acknowledged) have the single best ectotherm exhibit in Europe, and a marginally-larger overall total of ectotherm species, Chester deserves the edge - albeit a fairly slender one - given the consistent high quality of its ectotherm exhibits, an extensive and proven record of both in-situ and ex-situ conservation breeding and reintroduction of ectotherm taxa, and the significance of certain captive breeding records above and beyond anything which Prague can boast.
As such, I believe that a 3-2 vote for Chester is the fairest and most accurate vote possible - even if I acknowledge that a 52-48 result or even a 51-49 result in favour of Chester would be even better - and certainly *
far* more fair and accurate than the automatic and silent 4-1 vote for Prague which has been (predictably) cast elsewhere.