Introduced species per country

[Bobby Bok]

Is there any document about all the invasive snakes cases in Europe?

I dont know one.

I thought this would also make for an interesting topic and to maybe have our own overview of introduced (and maybe reproducing) (sub)species per country.

For the Netherlands there are quite a few (sub)species present at the moment:
Triturus carnifex
Triturus marmoratus
Rana dalmatina
Lithobates catesbeianus (even though eradication of this species seems to have been succesful)
Trachemys scripta (widespread but not reproducing)
Podarcis muralis (different non-native subspecies besides the native brogniardii)
Elaphe schrenckii
Natrix natrix persa (two populations)

[Bobby Bok]

Btw. also found this from Spain: http://t.naciodigital.cat/index.php?id=89829

[Mario Schweiger]

So I will continue with Austria

Podarcis muralis maculiventris (Native to Tyrol, but introduced populations in E Austria)
Trachemys s. scripta
Trachemys s. elegans
Graptemys, diff. (s)sp.

[Ronald Zimmerman]

Is there any document about all the invasive snakes cases in Europe?

I dont know one.

I thought this would also make for an interesting topic and to maybe have our own overview of introduced (and maybe reproducing) (sub)species per country.

For the Netherlands there are quite a few (sub)species present at the moment:
Triturus carnifex
Triturus marmoratus
Rana dalmatina
Lithobates catesbeianus (even though eradication of this species seems to have been succesful)
Trachemys scripta (widespread but not reproducing)
Podarcis muralis (different non-native subspecies besides the native brogniardii)
Elaphe schrenckii
Natrix natrix persa (two populations)

Graptemys pseudogeographica (sometimes also at a T. scripta dumpsite)

[Paul Lambourne]

For the UK..

Podarcis muralis
Lacerta bilineata
Zamensis longissimus
Pelophylax ridibundus
Alytes obstetricans
Pelophylax perezi
Triturus carnifex
Xenopus laevis (possibly)
Lithobates catesbeianus
Icthyosaura alpestris

and the ever present Trachemys.

[Thor Hakonsen]

For Norway

Pelophylax kl. esculante - Edible Frog.
Pelophylax lessonae - Pool Frog. Is also introduced to a small island (same as Edible frog), but there is also one natural location (3 small pools) for this species in the south of Norway

And there is some few Trachemys in some ponds - but no chance of reproduction up here

[Alexandre Roux]

For France:

Amphibians
Bombina bombina (reproducing)
Discoglossus pictus (reproducing)
Lithobates catesbeianus (reproducing)
Triturus carnifex (reproducing)
Xenopus laevis (reproducing)

Reptiles
Chelydra serpentina (reproducing)
Natrix tessellata (1 observation from "Delta de la Drance", extension of Lake Geneva's population)
Pantherophis guttatus (no proof of a wild population but many isolated sightings, sometimes in very closed areas)
Podarcis siculus (reproducing)
Trachemys scripta (reproducing)

There are many sightings about other exogenous species but not that much to think that there could be populations.

[Pablo Deschepper]

For Belgium (what I know)
-Podarcis muralis
-Trachemys scripta
-Orthriophis taeniurus (reproducing, for the dutch speaking: http://www.natuurpunt.be/news/taiwanese ... ZAvJ_ntmko)
-Lithobates catesbeianus
-Pelophylax ridibundus

[Kristian Munkholm]

Denmark:

Trachemys scripta, widespread (though mostly in city parks) but not reproducing
Pelophylax kurtmuelleri, reproducing and well established, but limited to one Copenhagen pond.

There are a number of reports of individuals of other exogenous species but none that could be deemed to subsist at present in anything that might reasonably be termed populations.

For Norway

...Pelophylax lessonae - Pool Frog. Is also introduced to a small island (same as Edible frog), but there is also one natural location (3 small pools) for this species in the south of Norway

Somehow I'd missed that being found in Norway. Going by my old book I thought that in Scandinavia they were only known from Uppland until Tom's recent discovery in Finland. That means we're only missing Denmark now. I saw a frog that looked a lot like the Uppland lessonae on Funen a couple of years ago. It got away from me before I got my hands on it for a closer look, though, and as I was with my family who were already losing their patience with me I didn't look for others. Since then I've always shrugged it off as just a freaky looking esculentus (which, with overwhelming probability, it was) but I guess I really have to get back to that pond for a closer look, just in case...

[Jeroen Speybroeck]

For Belgium (what I know)
-Podarcis muralis
-Trachemys scripta
-Orthriophis taeniurus (reproducting, for the dutch speaking: http://www.natuurpunt.be/news/taiwanese ... ZAvJ_ntmko)
-Lithobates catesbeianus
-Pelophylax ridibundus

I'll add that Trachemys is not reproducing and the others are (although the Orthriophis case is build on the find of a single juvenile = could be escape still...). Additionally, we have Pelophylax bedriagae and P. cf. caralitanus. We also have an out-of-range introduction of Alytes obstetricans and at least 2 or 3 of Natrix natrix. Also plenty of other terrapins and a Xenopus at one point. The list of escaped pets found is endless.