Introduced species per country

[Jeroen Speybroeck]

Niklas, are there currently sizeable reproducing Lithobates populations in Germany?

[Niklas Ban]

Niklas, are there currently sizeable reproducing Lithobates populations in Germany?

Yes, there is at least one reproducing Lithobates population in Westphalia, but there is not much knowledge about them.
"Mittlerweile sind reproduzierende Populationen aus dem Bonner Raum belegt. Von zwei weiteren Gartenteichen wurde bekannt, dass die dort ausgesetzten Ochsenfrösche wieder eingefangen wurden. Aus anderen Regionen, so aus dem Raum Unna, gibt es Hinweise auf sich vermehrende Ochsenfrösche, „die dort in vielen Gärten seien“. Originator : http://www.herpetofauna-nrw.de/arten/ne ... /index.php
It does say, that there are reproducing populations near Bonn and maybe a population near Unna. If someone else know other populations in Germany please add it.
And thank you for the clarification of S. italicus!

[Mario Harzheim]

Niklas, are there currently sizeable reproducing Lithobates populations in Germany?

As far as I know, there is a population near Karlsruhe reproducing for quite a while. I can't name a proper source right now, but I think this was the first place of Lithobates' reproduction in Germany I've heard about.

[Peter Oefinger]

Some addition to the German list:
- Podarcis liolepis
- Zamenis longissimus could be an ancient introduction
- Natrix tessellata at Ahr-Valley seems to be a Balkan introduction (if the population still exists)

[Christoph Stenger]

Some addition to the German list:

- Zamenis longissimus could be an ancient introduction

Which German population are you referring to? I thought the cause of an ancient introduction had been denied for quite some time.

Cheers

[Peter Oefinger]

I thought the cause of an ancient introduction had been denied for quite some time.

I know: There is the opinion that the German longissimus are natural relict populations - but I don't know who is right (I'm not the snake expert).

[Christoph Stenger]

So you are referring to all German populations?

[Mario Harzheim]

So you are referring to all German populations?

I think he is referring to the isolated, western populations. In Joger et al. (2006) ("Phylogeographie, Artbildung und pleistozäne Einwanderung mitteleuropäischer Reptilien") the German and Austrian Z. longissimus poulations constitute one central European phylogenetic cluster.

[Peter Oefinger]

Yes. I meant the Hessen populations. Are there others than these?

[Niklas Ban]

Yes. I meant the Hessen populations. Are there others than these?

Yes, Peter there are other (Passau) oh and Lacerta bilineata is also introduced as Natrix natrix persa and Natrix natrix scutata.