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Strange question about arvalis in Sweden

PostPosted: Sun Mar 19, 2017 3:43 pm
by Peter Engelen
Does Rana arvalis in Sweden turn blue for mating?

Re: Strange question about arvalis in Sweden

PostPosted: Sun Mar 19, 2017 7:27 pm
by Jeroen Speybroeck
There are pics of it online.

Re: Strange question about arvalis in Sweden

PostPosted: Mon Mar 20, 2017 8:55 am
by Mario Schweiger
at least in the book: Sveriges grodor, ödlor och ormar is a blue arvalis male
sverige1.jpg
sverige1.jpg (73.08 KiB) Viewed 5767 times

sverige2.jpg

and (maybe) an interesting website with lots of citations
http://www.rana.se/Jon/frogs.htm

Re: Strange question about arvalis in Sweden

PostPosted: Mon Mar 20, 2017 9:18 pm
by Thor Hakonsen
They do in Norway, so I would be very surprised if they don't in Sweden also. But, I'm not quite sure if they will in all populations (?)

Does any of you guys now if that is the case south of the nordic countries ?

Re: Strange question about arvalis in Sweden

PostPosted: Thu Mar 23, 2017 11:07 pm
by Berislav Horvatic
Thor Hakonsen wrote:They do in Norway, so I would be very surprised if they don't in Sweden also. But, I'm not quite sure if they will in all populations (?)
Does any of you guys now if that is the case south of the nordic countries ?

Pardon me, but WHAT do you mean by "the case south of the nordic countries"? Turning blue, not turning blue, or what?

Re: Strange question about arvalis in Sweden

PostPosted: Fri Mar 24, 2017 9:44 am
by Thor Hakonsen
I think I was very clear :)

In Norway, it seems like in some populations the males does not turn blue for a short period during mating season - but stay in the "normal color" also during breeding. Does anyone know if this also is the case in other countries, or does all breeding males change color in continetal Europe ?


Hope this was clearer :)

Re: Strange question about arvalis in Sweden

PostPosted: Sat Mar 25, 2017 4:43 pm
by Berislav Horvatic
Thor Hakonsen wrote:I think I was very clear :)
In Norway, it seems like in some populations the males does not turn blue for a short period during mating season - but stay in the "normal color" also during breeding. Does anyone know if this also is the case in other countries, or does all breeding males change color in continetal Europe ?
Hope this was clearer :)

Yes, it was/is indeed, thank you. Now just waiting for any relevant/educated answer. Waiting for a loooong time, I'm afraid...

Re: Strange question about arvalis in Sweden

PostPosted: Sun Apr 16, 2017 4:21 pm
by Jan Pröjts
Peter Engelen wrote:Does Rana arvalis in Sweden turn blue for mating?


YES

Re: Strange question about arvalis in Sweden

PostPosted: Sun Apr 16, 2017 9:54 pm
by Berislav Horvatic
Jan Pröjts wrote:
Peter Engelen wrote:Does Rana arvalis in Sweden turn blue for mating?

YES

I do like an answer like that very, very much. A "YES" is a straight & firm "yes" - no kidding. Thanks.
(No, I'm not joking.)