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The Central American Rattlesnake is large, it can grow up to cm, but the average adult ranges between and cm. It has a robust body, a relatively . Snake venomics of the Central American rattlesnake Crotalus simus and the South American Crotalus durissus complex points to neurotoxicity as an adaptive . Crotalus simus is a venomous pit viper species found in Mexico and Central America. The specific epithet is Latin for ‘flat-nosed’, likely because its head is blunt.

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Spinal ridge is evident, particularly anteriorly, and dorsal scales are strongly keeled and tuberculate. PLoS One 9 6: Epidemiology, Clinical Features, and Clinical Management.

These include local cauterization, incision, excision, amputation, suction by mouth, vacuum pump or syringe, combined incision and suction “venom-ex” apparatusinjection or instillation of compounds such as potassium permanganate, phenol carbolic soap and trypsin, application of electric shocks or ice cryotherapyuse of traditional herbal, folk and other remedies including the ingestion of emetic plant products and parts of the snake, multiple incisions, tattooing and so on.

It should not be assumed that humankind currently knows all there is to know about any species, even for common species. Their overall toxin compositions explain the outcome of envenomation by these species. Snakes of the World: Mesoamerican Herpetology 2 1: Reptarium The Reptile Database. Previously, untilthe description for this form was listed as the nominate subspecies for the tropical rattlesnake, C.

If there is any impairment of vital functions, such as problems with respiration, airway, circulation, heart function, these must be supported as a priority. Cardiotoxicity No case reports for this species, but related species can cause hyperkalaemic cardiotoxicity secondary to myolysis. Venom Myotoxins Secondary myotoxic activity may be present.

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Check List 11 5: Dangerousness Clinical effects uncertain, but related to medically important species, therefore major envenoming cannot be excluded. Taxonomic studies simsu rattlesnakes of Mainland Mexico.

It is absent crottalus Panamabut apparently does occur on the Atlantic side of Colombia. The basis for reassurance is the fact that many venomous bites do not result in envenoming, the relatively slow progression to severe envenoming hours following elapid bites, days following viper bites and the effectiveness of modern medical treatment.

Mesoamerican Herpetology 4 3: We report a comparative venomic and antivenomic characterization of the venoms of newborn and adult specimens of the Central American rattlesnake, Crotalus simus, and of the subspecies cumanensis, durissus, ruruima, and terrificus of South American Crotalus durissus. A Catalogue of Living and Extinct Species. Copyright CrotaluxWCH. Seek urgent medical attention. Only venom from neonates contains crotoxin; a constituent typically found in C.

We therefore do not accept legal responsibility for use of the information provided and we require that all users use information from this site at their own risk. Contiguo a la plaza de deportes, Dulce Nombre de Coronado.

The Venomous Reptiles of the Western Hemisphere. Mesoamerican Herpetology 2 3: Wikimedia Commons has media related to Crotalus simus.

The antivenomic results also explain why the antivenoms effectively neutralize the hemorrhagic activity of adult C. If the bite is on a limb, a broad bandage even torn strips of clothing or pantyhose should be applied over the bitten area at moderate pressure as for a sprain; not so tight circulation is impairedthen extended to cover as much of the bitten limb as possible, including fingers or toes, going over the top of clothing rather than risking excessive limb movement by removing clothing.

The increased concentration of the neurotoxins crotoxin and crotamine in South American rattlesnake venoms strongly argues that the gain of neurotoxicity and lethal venom activities to mammals may have represented the key axis along which overall venom toxicity has evolved during Crotalus durissus invasion of South America.


Avoid peroral intake, absolutely no alcohol. Noteworthy distributional records for the herpetofauna of Chiapas, Mexico. Reprint, University of California Press, Berkeley. To the Mayans and their living descendants, the Yucatan subspecies C.

WCH Clinical Toxinology Resources

A Taxonomic and Geographic Reference, vol. Neonate and adult C. Production Presentation Technological Development. This structure consists of a series of hollow, interlocked segments, which crotalu against each other when the snake vibrates its tail, producing the strong defensive sound so characteristic of the Rattlesnake. What the rattlesnake actually symbolizes is unknown, but many temples have carved rattlesnake shapes.

The bitten limb must not be exercised as muscular crotlaus will promote systemic absorption of venom. The Central American Rattlesnake is large, it can grow up to cm, but the average adult ranges between and cm.

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WilliamsJeff Boundy Tweet Please submit feedback about this entry to the curator. In marked contrast, venom from adult C.

It has a robust body, a relatively small head, not too differentiated from the neck, a round snout and an evident spinal crest on the first third of the body. The venoms of the South American Crotalus subspecies belong to one of two distinct phenotypes.

Head is large, broad and very distinct from narrow neck. Crottalus Publishing Associates, Ithaca and London. Prey Feeds mainly on lizards, rodents, small mammals and birds.

These toxin profiles correlate well with the overall biochemical and pharmacological features of venoms from adult hemorrhagic and newborn neurotoxic C.