B.rubida

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B.rubida

Postby rubida » Sat Apr 28, 2007 4:32 pm

Photo of a male Bitis rubida from the Swartberg Nature Reserve, Western Cape.

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Postby Rob » Sat Apr 28, 2007 4:41 pm

Cornuta phase? :)
Its amazing how variable they are. Why is that? Is it locality that differs?
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Postby armata » Sat Apr 28, 2007 6:18 pm

Compare this B.rubida from nr Montagu

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Postby armata » Sat Apr 28, 2007 6:24 pm

we don't know yet if this patterned colour is peculiar to the Swartberg - they are variable. Most of the Cederberg rubida seem to be brown/reddish. even pinkish. They are also syntopic with B.cornuta there. Note also on the Montagu snake complete lack of eye tufts - this also occurs in B.cornuta, and B.armata. B.rubida is also syntopic with B.atropos in both Cederberg and Swartberg, but probably partition resources effectively (we think?)
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Postby armata » Sun Apr 29, 2007 5:02 pm

Typical specimen - cornuta from Springbok
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Postby rubida » Sun Apr 29, 2007 5:17 pm

Tony, post the photo of the B.cornuta from Cedarberg. The response will be interesting :)
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Postby armata » Sun Apr 29, 2007 5:32 pm

now this cornuta from Garies -
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Postby armata » Sun Apr 29, 2007 6:29 pm

rubida from Cederberg -
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Postby Bushviper » Sun Apr 29, 2007 6:37 pm

How the hell do you tell the difference? Some look like Many horned adders (B. cornuta) and others like hornless Horned adders (B. caudalis).
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Postby froot » Sun Apr 29, 2007 8:25 pm

I'm just as lost as BV in correctly identifying these. Between Rubida's first pic and Armata's second, can you tell by looking at them that they are different species? And if so how?

Thanks for sharing btw ;)
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Postby Rob » Sun Apr 29, 2007 10:52 pm

Apparently B. rubida from Swartberg and B. armata found in the De Hoop region look identical, it takes a ventral count to split them. (TP)
I would presume in person the above similar looking hornless B. cornuta and B. rubida would not be too difficult to tell apart, but if so, a method such as ventral counts etc would be used.
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Postby armata » Sun Apr 29, 2007 11:32 pm

The dwarf Bitis cause the most 'fun' in the snake ID part of the CRI courses.
A lot has to with geographical distribution, high altitude and lowland forms. Genetics will make things more clear - eventually.
Some of my work is frustrating - I desparely need to sample specimens from the WCNP; the permit states that I can sample but nor handle duh!
And they won't move; thanks Nat Parks science progresses well with your help.
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Postby Hellemar » Mon Apr 30, 2007 10:29 am

Hi...


I don´t now if it´s just me, but I don´t see any difference at all, but that´s most probably because the small amout of pics... ;) (hint)



Henke :)
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Postby Mongoose » Mon Apr 30, 2007 10:40 am

Very nice, just love dwarf bitis!

Tony, in the warmer months I want to head down to the WC and go and photograph some Bitis, Please dont shoot me!
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Postby Rob » Mon Apr 30, 2007 11:01 am

He will be wearing a white shirt with a bright red target on the back and the front.

But don't shoot him ;)
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