Small black Vipera aspis atra

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Small black Vipera aspis atra

Beitragvon aspisatra » Mi Apr 15, 2009 11:40

Lately I have observe this viper.
Particular because long only 20 cms and almost black totalmet!

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Beitragvon pseudopus1 » Mi Apr 15, 2009 12:14

Hello!
Nice pics! I wonder how fast this viper turned black, for as I know they are not black when born. Where did you find the snake? (Which country, place, ...).

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Beitragvon aspisatra » Mi Apr 15, 2009 13:57

Thanks!
It is for that it is interesting.
According to the theories they become black after the 3 years, but this is young.
Is from Ticino, south of Switzerland.

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Beitragvon Mamba » Do Apr 16, 2009 10:25

According to the theories they become black after the 3 years, but this is young.


As a rule, these vipers are born "normal" colored, and some of'em turn into black within their firs two to three years.
But no rule without exception, as we all know. I once found a jet black juvenile in the Simme Valley in "Berner Oberland" and STEMMLER (1968) reported a newborn, black common adder (Vipera berus).
by the way: According to GOLAY et al. (2008) and URSENBACHER et al. (2006), Vipera aspis atra should no longer be regarded as valid subspecies. Due to the results of DNA sequence data and very poor morphological differences between "atra" and the nominotype, it has been synonymized with Vipera aspis aspis by these authors.

Kind regards
Mamba

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Beitragvon aspisatra » Do Apr 16, 2009 12:30

Yes this Vipera aspis aspis variant atra is one exception that confirmation the rule!

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