Viper apsis aspis from atra, male, 1290m

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Wildlife (no birds)

Viper apsis aspis from atra, male, 1290m...

17.1 MEGAPIXEL

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Specie, Caratteri, Etologia View gallery (52 photos)

Viper apsis aspis from atra, male, 1290m sent on December 05, 2020 (13:26) by Viperaaspis. 5 comments, 221 views.

1/60 f/5.6, ISO 100,

Il melanismo per quanto riguarda le vipere rappresenta un meccanismo evolutivo, i soggetti con livrea nera infatti occupano prevalentemente le regioni alpine ricche di precipitazioni e dal clima rigido, poichè necessitano di accumulare più rapidamente l'energia prodotta dai raggi solari, anche nelle giornate uggiose. Questo spiega l'abbondanza di questi esemplari all'interno delle popolazioni alpine, dove in certe stazioni rappresentano anche il 50% degli esemplari osservati. Il colore nero permette infatti di attirare più rapidamente l'energia solare riducendo i tempi di esposizione. Spesso mi è capitato in giornate umide e fredde di osservare comunque questi individui termoregolarsi all'aperto, mentre gli individui con livrea "normale" restavano all'interno dei loro rifugi. In questa immagine si può osservare un maschio mentre si espone in una pietraia a 1290m con leggera pioggia e 12°C di temperatura.

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12 persons like it: Andnol, Errevi, Gigi Casati, Latino Rosario, Marco Codazzi, Misterg, Paolo P, Riatz, Sebastiano Calleri, Valerie., Valerio Rossato, Vinicio65

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Andnol

sent on December 05, 2020 (14:13) | This comment has been automatically translated (show/hide original)

With your interesting caption you responded to a curiosity of mine, found one with a black livery last year pejo area at 2500 m, I could not see the breed.
's a great shot.
Cyo Andrea

Viperaaspis

sent on December 05, 2020 (14:46) | This comment has been automatically translated (show/hide original)

Hello definitely Vipera berus for altitude and characteristics of the species. Vipera aspis in Trentino is present with the subspecies francisciredi, melanism in these specimens is really very rare while marasso with melanotic livery is quite common in Veneto, Friuli and Trentino

Sebastiano Calleri

sent on December 05, 2020 (15:36) | This comment has been automatically translated (show/hide original)

A beautiful shot for a species I didn't know.. very interesting and exhaustive caption.
Compliments! Hello,Seba

Latino Rosario

sent on December 05, 2020 (15:53) | This comment has been automatically translated (show/hide original)

Very nice photo and specifies the description of the species in the caption. I'm not going to do that.
Ciao, Rosario

Viperaaspis

sent on December 05, 2020 (23:02) | This comment has been translated

Thanks a lot!

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