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Venezuela Trip
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by HerpFever45 on October 26, 2004
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Hello,
Listen, I am planning on conducting a research project on the venomous snakes of Venezuela. I am hoping to go there next summer (2005. However, there is something I need to know. I would really appreciate it if anyone was kind enough to tell me in detail the differences between the seven species of Bothrops vipers in Venezuela:
-Bothrops asper
-Bothrops atrox
-Bothrops bilineata
-Bothrops brazili
-Bothrops medusa
-Bothrops taeniata
-Bothrops venezuelensis
I know it's a lot to ask for but I really need to know.
I would also like it if you could PLEASE tell me the exact geographic distribution/range of each snake. Please I really want this information and I will be grateful to whoever answers me.
I am saving up to buy Campbell and Lamar's The Venomous Reptiles of the Western Hemisphere, which I am told has a lot of info, but in the meantime I have no other source so please answer.
Thanks a lot,
Bryan
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RE: Venezuela Trip
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by paleoherp on October 26, 2004
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hey from what i know:
bothrops asper is found through much of central america . there found north central venezuela of the rio orinoco as far as the delta amacuro region. its about 120-180 they are very variable in color the ground color can be tan, brown,olive, greyish brown or nearly black
http://itgmv1.fzk.de/www/itg/uetz/herp/photos/Bothrops_asper3.jpg
http://itgmv1.fzk.de/www/itg/uetz/herp/photos/BOTHROPS_ASPER_BELIZE.JPG
Bothrops atrox.
lives in southern and eastern venezuela they grow to about 75-125cm these are also very variable in the color .
http://www.geocities.com/hotherps/wwbatrox1.jpg
http://elib.cs.berkeley.edu/cgi/img_query?special=browse&where-lifeform=Reptile&where-taxon=Bothrops+atrox
brothrops brazili.
lives in southern and eastern venezuela only grow about 70-90cm in length
http://eco.ib.usp.br/labvert/Jararaca/projjar_especies.htm
http://www.amazonherp.com/reptiles/snakes/viperidae/bothbrazil.htm
Bothrops venezuelensis.
northen and central venezuela can be found around 600m elavation.
http://www.google.com/search?hl=en&q=Bothrops+venezuelensis&btnG=Google+Search
Bothriopsis bilineata .
http://www.omnh.ou.edu/personnel/herpetology/vitt/pics/Bbil.jpg
Bothriopsis taeniata .
there usualy less then 100cm in length .
http://www.omnh.ou.edu/personnel/herpetology/vitt/pics/Btaen.jpg
Bothriopsis medusa.
endemic to the central range of cordillera .
i ve never seen a pic on the net but are about 70cm and the color is tan yellowish brown, reddish brown, grey or olive.
hope this helps,
SHAUN.
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RE: Venezuela Trip
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by CAISSACA on October 27, 2004
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It is presently unclear whether Bothrops asper is found in Venezuela - some workes have ascribed the populations from the north of the country to B. asper, but both morphologically and phylogenetically, they are closer to B. atrox - either a variety of B. atrox, or a closely related species. The northern Venezuelan populations do get much bigger than other B. atrox, and females especially can look quite asper-like, but they are definitely not asper. There is a small possibility that there may be isolated populations of asper in parts of the NW of Venezuela.
B. venezuelensis differs from B. atrox in having a rounded snout when seen from above (pointed in B. atrox), and extensive fine black speckling on the ventral surface, often givign it a generally very dark appearance (often geenrally light, or with a darker "chequerboard" effect in B. atrox). Juveniles are not easy to distinguish without practice, but range is a good indication (B. venezuelensis occurs only along the mountain ranges).
Cheers,
Wolfgang
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RE: Venezuela Trip
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by reptiven on November 25, 2008
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Hello everybody
My Name is Luis Alejandro Rodriguez J. and i live in Venezuela i got a website called www.serpientesdevenezuela.net and if you need help here in Venezuela iŽll be glad to help you and clarified some taxa aspect
Regards.
Luis Alejandro Rodriguez J.
www.serpientesdevenezuela.net
email: luisr@serpientesdevenezuela.net
Messenger: reptiven@msn.com
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