Tuesday, June 1, 2010

Southern Pacific Rattlesnake



One of the nine subspecies of the western rattlesnake, the southern pacific is relatively dark in coloration. They are native to the southern coasts of California and Baja. They occupy valley grasslands, woodlands and shrub communities.

This is the most common species in San Diego and may be found near housing developments, parks, and even the beach. Its range is from coastal Southern California to northwestern Baja California, Mexico, and they are commonly found on prairies or sage scrub/grassland areas, especially near rocky outcroppings

Like most rattlesnakes, the Southern Pacific produces a powerful hemotoxin that attacks the blood and tissue of its prey. Recently, in some areas of southern California the Southern Pacific Rattlesnake has developed neurotoxins in it's venom, as well. A bite from this snake can cause localized tissue damage in humans, and if left untreated may result in death from hemorrhaging, blood clotting or a drop in blood pressure. In addition if neurotoxins are present in the snakes venom, there may be other neurological issues as well, including paralysis, respiratory failure and cardiac arrhythmia.

It is not clear how some Southern Pacific rattlesnakes have developed neurotoxic venom, although it may be due to cross breeding with the Mojave rattlesnake. In any case this makes for a potentially more dangerous envenomation and snake. The Southern Pacific Rattlesnake (Crotalus Helleri) is responsible for most of the snake bites in the coastal area of California from Los Angeles to San Diego

This particular snake is highly venomous and even though the Southern Pacific rattler is nonaggressive, it accounts for more venomous bites in the United States than any other snake because we are building new homes and communities on top of their habitat.

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