The microbiome of dwarf chameleons

The microbiome of dwarf chameleons

Tiermedizin Science

The term microbiome has been very popular for some years now. In humans and animals, it refers to the totality of all microorganisms that colonise a living being. Most of them colonise the gastrointestinal tract. In the case of chameleons, there is only very limited literature on this topic. A master’s thesis from South Africa now deals with the bacterial composition of the microbiome in South African dwarf chameleons of the genus Bradypodion.

60 cheek swabs were collected from wild chameleons in KwaZulu-Natal. Of these, 20 were cheek swabs from Bradypodion melanocephalum, 20 from Bradypodion thamnobates and 20 from Bradypodion setaroi. After sampling, the same 60 animals were transported in cloth bags to the research base, where the animals were kept in 3.3 l boxes for 24 hours to obtain faecal samples. Since not all of the original 60 chameleons defecated, faeces were collected from additional chameleons.

The samples were all genetically tested. 40.43% of the samples contained Firmicutes, a similarly large proportion of the samples contained Proteobacteria with 36.86%. Bacteroidota followed with some distance, which could be detected in just under 16% of the samples. Verrucomicrobiota, Fusobacteriota, Actinobateriota, Spirochetes, Desulfobacteroa, Cyanobacteria, Thermoplamatota, Deferribacterota, Synergistota, Campylobacterota, Deinococcota, Halobacterota, Euryarchaeota, Elusimicrobiota and Myxococcota were found in significantly smaller numbers (up to 2%).

The microbiome of dwarf chameleons of the species Bradypodion melanocephalum, Bradypodion thamnobates and Bradypodion setaroi is similar to that of other reptiles. It consists mainly of proteobacteria and firmicutes, which may contribute to digestion. One particular bacterial species also suggests that the diet of the studied dwarf chameleons may include beetles of the genus Dendrophagus. The microbiome of all three dwarf chameleon species was very similar in the cheek swabs – this is called phylosymbiosis – while there were differences in composition between the species in the faeces. In all three dwarf chameleon species, significantly more different bacteria were found in the faeces than in the cheek swabs. A comparison between males and females did not reveal any significant differences in the microbiome of all three chameleon species. The author assumes that the bacterial species depend on the different habitats of the respective species. It is still unclear to what extent the microbiome is related to bacteria that a chameleon may ingest with feeding insects or from the soil of its environment. A detailed list of the bacterial species found can be found in the appendix of the publication.

The Hitchhiker’s Guide to dwarf chameleons (Bradypodion): The composition and function of the microbiome
Matthew G. Adair
Master of Science dissertation at the university of Johannesburg, 2023
DOI: not available

Trioceros jacksoniis looking for a new home

Trioceros jacksoniis looking for a new home

Abzugeben AG Interna General topics

A keeper has contacted us as AG Chamäleons because he is looking for new keepers for his three Trioceros jacksonii jacksonii. Two males and one female (2.1) are for sale. One of the males was bought in 2020 already adult. Together with a female that unfortunately died, it then had offspring, of which two still remain with the owner. The two offspring are a male and a female born in November 2020. All three chameleons eat very well and are not used to daily handling. If you are interested in adopting the animals, please send an email to info@agchamaeleons.de.

Addendum 27.09.2023: All three animals have found a new owner.

 

 

Open letter to the EU Commission regarding the lamp ban

Open letter to the EU Commission regarding the lamp ban

General topics

The European Union plans to ban mercury-containing lamps and light bulbs without exception from 2027. In terrarium keeping, this will affect almost all lamps that are also used in chameleon keeping, such as fluorescent tubes and metal halide lamps. Some are already banned. These lamps are indispensable, even vital, for keeping chameleons. So far, EU legislation under EU 1194/2012 had always made an exception for “special purposes” such as animal husbandry. This time, however, no exception is provided! Such a ban would make countless animal husbandries impossible, for private keepers as well as in zoos and species conservation projects. Therefore, a number of associations, including the German Society for Herpetology and Terrarial Science, of which AG Chamäleons is a member, sent an open letter to the EU Commission yesterday.

The open letter can be downloaded and read free of charge here. Please support the cause and share the open letter widely so that other keepers become aware of the current situation. We need strong associations like the DGHT to represent our concerns at EU level! Please also write to your MEPs so that they get wind of this issue.

Location for the 2024 conference

Location for the 2024 conference

AG Interna General topics

The decision has now been made: we will meet for the 2024 conference in beautiful Fulda in Hesse. The venue is the Stadtgasthof Drei Linden in Neuenberger Str. 37 in 36041 Fulda. The rooms have recently been renovated, the food on site is good and there is also a beer garden and playground for children. IMPORTANT: Room bookings at the Stadtgasthof Drei Linden are only possible from January 2024! It is a ten-minute walk from the inn to the historic centre of Fulda. So if you don’t want to stay overnight directly on site, you’ll find all the options in Fulda itself. Fulda has an ICE train station and can be reached from all directions in Germany within a few hours. More information will follow as soon as the conference programme has been finalised.

Presentation in Neu-Ulm about Turkey

Presentation in Neu-Ulm about Turkey

Live lectures Reiseberichte

On Saturday, 16 September 2023, Laura and Bobby Bok will give a talk on herpetological trips to Turkey. The herpetofauna of Anatolia is astonishingly diverse – not without reason it is also called “Asia Minor”. Reptiles from the Balkans, the Caucasus, Central Asia and the deserts of Arabia meet here. From turtles to the smallest gecko – there is a lot to tell from Anatolia!

Laura und Bobby Bok Türkiye from Trabzon to the Taurus
DGHT city group Ulm
Il Mio Ristorante
Europastraße 15 (Am Mutenhölzle)
89231 Neu-Ulm
Begin at 6.30 p.m.

Presentation in Kassel about Morocco

Presentation in Kassel about Morocco

Live lectures Reiseberichte

On Saturday, 16 September 2023, Uwe Prokoph will give a lecture on a herpetological journey to the Western Sahara and the south of Morocco. Although the landscape there seems rather hostile at first glance, there is a lot to discover, especially in reptiles!

Uwe Prokoph Desert Wonderworlds
DGHT Stadtgruppe Kassel
House Schönewald
Wilhelmstraße 17
34233 Fuldatal
from 6 o’clock p.m.

Lecture in Hamburg about Madagascar

Lecture in Hamburg about Madagascar

Live lectures Reiseberichte

Together with Jutta Dwinger, AG member Lars Dwinger will be giving a presentation full of pictures in Schleswig-Holstein on Friday, 15th September 2022. Last year, the two travelled to the north of Madagascar, which is known for its extreme biodiversity.

The journey begins in the Marojejy National Park, which stretches across the gorges and steep slopes of the mountain range of the same name. There you can see extremely rarely photographed chameleons, but also a great variety of frogs, snakes and geckos. Afterwards, the journey led via the east coast towns of Sambava and Vohémar to the dry forest of Daraina. The next stop was the world-famous Tsingys in Ankarana National Park. Even in these two dry forests, there is a lot of small and big life. The final stop was camping in the middle of a chameleon paradise: The Montagne d’Ambre in the far north of Madagascar. Between tiny earth chameleons that just fit on the tip of a finger and the gentle giants of the rainforest, the two Hamburgers encounter many fascinating creatures on this trip.

Lars und Jutta Dwinger  Foray through four national parks in the north of Madagascar
Terrarien-Freunde-Hamburg e.V.
Vereinsheim des SC Condor
Berner Heerweg 188
22159 Hamburg
Start of the presentation at 6 p.m.

Picture: Brookesia betschi in Marojejy, photographed by Jutta Dwinger

Chameleons in mythology

Chameleons in mythology

General topics Newspaper articles

With its independently moving eyes, shooting tongue and ability to change colour, the chameleon was already the subject of superstition and myths in ancient times – and has remained so in many places to this day. An article now published by Prof. Dr. Wolfgang Böhme and natural historian Thore Koppetsch deals with precisely this topic.

The content ranges from the so-called Brooklyn Papyrus, which described a still unexplained “colour-changing” creature of antiquity, to bizarre events involving mother’s milk and chameleons in the Gambia of our time. Probably the oldest written record of a chameleon comes from Greece, from Aristotle himself, who lived from 384 to 322 BC. The term chameleon itself probably goes back to the Greek: chamai and leon were put together to form “earth lion”. However, this interpretation of the origin of the word is not entirely undisputed. The article also deals with superstitions on the island of Samos, in Morocco, Tunisia, Togo, Benin, Cameroon and Madagascar, and the use of chameleons for pseudo-medicine and occultism.

Chamäleons in der Mythologie der Völker
Wolfgang Böhme, Thore Koppetsch
Koenigiana 17, 2023, pp. 39-50
DOI: nicht vorhanden

Chamaeleo arabicus juveniles in the AG

Chamaeleo arabicus juveniles in the AG

Nachzuchten

The Arabian chameleon, Chamaeleo arabicus, is hardly ever bred in Europe at the moment. So it is all the more pleasing that this week a whole clutch of chameleons hatched successfully in Switzerland and Germany! Congratulations to Franziska von Ballmoos-Gasser, where the pictured hatchlings live. Franziska had given the parents to Rolf Attinger in winter 2021, where they successfully mated in 2022. After Rolf died unexpectedly, Franziska took back the animals and several eggs. Some of the eggs were given to a good friend of Rolf in Germany, the rest remained in Switzerland. Now 9 agile, good-looking youngsters have hatched in Switzerland and 14 in Germany. The aim is to join Rolf’s success with the species and to continue breeding the species with the same joy. At some point in the future, legal offspring of Chamaeleo arabicus should be offered in Europe. We sincerely hope that everything will continue to work out and that many more keepers will be able to enjoy the species!

Concerning Florida’s introduced panther chameleons

Concerning Florida’s introduced panther chameleons

Verbreitung Science

The “Sunshine State” Florida in the USA has the largest number of non-native species of reptiles in the world because of its warm climate. The panther chameleon (Furcifer pardalis) is one of the invasive species, i.e. those that do not actually belong in Florida but are now reproducing there. A study has now investigated the question of what the human inhabitants of Florida actually think of the chameleons.

It has been discussed for a long time whether panther chameleons belong to the species that were deliberately released for the purpose of “ranching”, i.e. to collect the offspring of the released chameleons for sale. That private individuals collect panther chameleons is not in dispute. According to the authors, ranching populations in Florida are mostly kept secret. They became aware of a small population in Orange County via social media in 2019. They then searched for the animals at night with torches and actually found 26 panther chameleons during several walks. They encountered private individuals on several occasions who were also looking for chameleons.

In 2020, questionnaires were distributed in person and via flyers with QR codes to 248 households located within the presumed 0.9 km² distribution area of the panther chameleon population. They were asked about concerns regarding the occurrence of panther chameleons, but also about existing knowledge about invasive species in general. The residents were also divided into three areas: A core region where chameleons had been observed several times, a peripheral region with few findings, and an outer region where no chameleons had been sighted at all.

44 households answered the questionnaire.  In fact, all 11 interviewed residents in the outer region had not sighted any chameleons. Of the 33 residents interviewed in the core and peripheral region, about a third said they had already observed panther chameleons. The same number had seen the light of torches at night. 86% of the residents surveyed knew that panther chameleons are not actually native to Florida. Only a few residents said they were concerned about the occurrence. Seven residents had approached collectors with torches and said the collectors had all said they were looking for chameleons for research purposes. Only one of the collectors had said he/she was looking for animals to sell, according to the residents. One resident reported an altercation after strangers entered his property several times looking for chameleons. Another resident called the police because of a whole group of collectors on the neighbouring property.

Unfortunately, the questionnaire was given out after the search efforts of the authors themselves, so it is not apparent from the responses how many of the encounters were indeed with people looking for chameleons for sale purposes. The publication is also a preprint, so no review process has taken place yet.

Colorful lizards and the conflict of collection
Colin M. Goodman, Natalie M. Claunch, Zachary T. Steele, Diane J. Episcopio-Sturgeon, Christina M. Romagosa
Preprint, 2023
DOI: 10.1101/2023.08.10.552819

Picture: Alex Laube