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  1. Galleries
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  3. Wildlife (no birds)
  4. » Natrice 0-Newt 1

 
Natrice 0-Newt 1...

Fauna 2

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Natrice 0-Newt 1 sent on June 19, 2018 (21:24) by Elleemme. 11 comments, 665 views.

at 600mm, 1/1000 f/8.0, ISO 640, hand held. Altopiano del Cansiglio, Italy. Specie: Natrix natrix

www.lauromagrisphotonature.com - Priorità di diaframma, focale 600mm, val.dev.esp.-0,333 - mano libera - " Un tentativo di predazione durato ben 22 minuti dove la natrice dal collare pensava di riuscire ad inghiottire senza problemi un tritone alpestre decisamente combattivo, alla fine la biscia dal collare ha desistito . La biscia dal collare (Natrix natrix) è tipicamente verde scuro o marrone con un collare giallo caratteristico dietro alla testa a cui deve il nome. Serpente di dimensioni medio-grandi, può arrivare facilmente ai 120 cm, Il colore potrebbe andare inoltre dal grigio al nero. La parte inferiore è più chiara. La biscia dal collare è una grande nuotatrice e va in letargo in Inverno. Si difendono raramente mordendo. Preda quasi interamente anfibi come le rane comuni, i rospi, le raganelle, le salamandre, i tritoni … qualche volta pesci. Tritone alpestre (Triturus alpestris) , molto numeroso nelle lame anche se di piccole dimensioni: raggiunge di solito i 7-8cm dilunghezza (al massimo 11) È facilmente riconoscibile per il colore del ventre di un bell'arancio vivo uniforme.





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avatarjunior
sent on June 20, 2018 (11:55) | This comment has been automatically translated (show/hide original)

It would seem a young boy of Natrix Helvetica Helvetica, nice document! :)

avatarmoderator
sent on June 20, 2018 (13:54) | This comment has been automatically translated (show/hide original)

The Swiss should be bigger and without yellow collar ;-)

avatarjunior
sent on June 20, 2018 (21:39) | This comment has been automatically translated (show/hide original)

The morphological differences of the species vary greatly on the basis of numerous factors, therefore the recognition (of species and subspecies) is based on molecular and non-morphological basis.
in the area where the photo was taken the species of natrice present is just Natrix Helvetica ssp. Helvetica;)

avatarmoderator
sent on June 20, 2018 (22:12) | This comment has been automatically translated (show/hide original)

Natrici surveyed in this area to date: Natrice from the collar and gusseted
last census in depth 30 September 2013

avatarjunior
sent on June 20, 2018 (22:25) | This comment has been automatically translated (show/hide original)

The species, like other reptile species of our peninsula (e.g. snake, divided into Hierphis viridiflavus and Hierophis Carbonarius) has been recently subdivided into Natrix Helvetica and Natrix Natrix after molecular-based analysis:)

avatarmoderator
sent on June 20, 2018 (22:31) | This comment has been automatically translated (show/hide original)

To differentiate the Natrix is the coloration: Natrix Helvetica has grey skin and not olive green like Natrix Natrix which, moreover, has a yellow collar. 8-)
Source: RivistaNatura Com
rivistanatura.com/scoperta-nuova-biscia-natrix-helvetica-vive-anche-it

avatarjunior
sent on June 20, 2018 (22:49) | This comment has been automatically translated (show/hide original)

Let's say that "Nature magazine" is not the greatest in terms of accuracy :-D
Here the article reviewing the taxonomy of the species:
www.researchgate.net/profile/Uwe_Fritz3/publication/320109887_A_very_E Another_species_Natrix_helvetica/Links/59db56b7aca272ab722b6921/A-Very-European-tale-Britain-still-has-only-three-snake-species-but-its-grass-snake-is-now-assigned-to-another-species-Natrix-Helvetica. PDF

avatarjunior
sent on June 20, 2018 (23:28) | This comment has been automatically translated (show/hide original)

Pardon I was convinced that the Cansiglio was in Trentino
:-D
But what is said for the recognition of course remains valid, never based only on morphology (not by any security, at the level of species or subspecies) but only on the distribution of the species (and therefore on genetic data of recent analysis)

avatarmoderator
sent on June 20, 2018 (23:32) | This comment has been automatically translated (show/hide original)

Quotas Pardon I was convinced that the Cansiglio was in Trentino :-o
-
For punishment you won't eat Nutella until 30 June 8-)

avatarjunior
sent on June 21, 2018 (11:08) | This comment has been translated

MrGreenEeeek!!!Eeeek!!!

avatarsenior
sent on July 14, 2018 (14:17) | This comment has been automatically translated (show/hide original)

Wonderful document ;-)




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