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Wolves

In: Science

Submitted By kyooshi
Words 433
Pages 2
Endangered species of the US:
Western region: Bakersfield Cactus, often Trealese’s Beavertail prickley pear (Ranis pretiosa)
The Bakersfield cactus is now listed (1990) as an endangered species due to habitat loss from open range to citrus groves, residential development and petroleum production. Other human effects are off-road activity, trash dumping and gravel mining. Competition from other grasses as well (exotics) is affecting this prickly pear. There is a recovery plan in place (1998) and we can wait and see what will happen with this pain-inducing species. Southeast region: The Ozark Hellbender:
The clear fast moving waters of the Ozarks can be lots of fun from fishing to kayaking. The story of the Ozark hellbender’s decline is an all too familiar one just like many of the other endangered species– increased siltation, water quality degradation, and increased human interference to their habitat. To add insult to injury, a highly infectious chytrid fungus is proving fatal to an ever-increasing number of amphibians throughout the world. Over 75 percent of hellbender deaths that occurred in the St. Louis Zoo’s captive population from March 2006 through April 2007 were due to this disease. This prompted the testing of Missouri’s wild Ozark hellbenders, and they found that 100% of the population was infected.

Global endangered species:
Panamanian Golden frog ((Atelopus zeteki),
Considered lucky by the Panamanians, A. zeteki was first listed under the ESA in 1976. It too is undergoing a rapid decline through human interventions. Factors affecting A. zeteki include illegal collecting for the pet trade as well as legal collecting for hotels and Zoos. Deforestations as well as stream sedimentation from logging and local farming. And then you add insult to injury again. The chytrid fungal problem that affects the hellbenders in the Ozarks. This pathogenic fungus is what may have caused the golden toad (Bufo periglene)to go extinct and A. zeteki may possibly become extinct at this time.
Rosy Periwinkle: the miracle cure (Catharanthuss roseus)
Considered endangered in the wild rain forests of madagascar, modern day researchers found that the Madagascar healers used C. roseus to cure diabetes and other ailments. This led them to find the chemical alkaloids that are active. Vinblastine and Vincristine are two of the most valuable. Vinblastine has raised the cure rate of Cchilhood Leukemia from 10 to 95% and Vinblasitne is used to treat Hodgkins Disease. Fighting over the rights to the drug companies money (even to the extant of being called pirates) is ongoing to this day. This plant is cultured successfully worldwide in subtropical climes both for ornamental purposes and medicinal purposes.

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