Los Angeles mountain lions are becoming inbred, a troubling sign

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Los Angeles mountain lions are becoming inbred, a troubling sign
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Cut off from each other by roads and development, the cats have a dangerous lack of genetic diversity—but there is hope on the horizon

To survive long-term, more mountain lions need to be free to move into and out of the two most isolated areas where the animals live—in the Santa Monica Mountains northwest of the city, and the Santa Anas, to the southeast.

, a wildlife ecologist with the U.S. National Park Service who also teaches at UCLA. “We are very confident that it will be super helpful for everything [wildlife], including mountain lions… by increasing connectivity.” Mountain lions once roamed throughout the majority of what is now the continental U.S. Widespread hunting, often government-sponsored, greatly reduced the cats’ range, mostly to the western part of the country, by the mid-1900s.

To conduct the most recent study, Huffmeyer and colleagues collected observations of mountain lion sightings throughout the Los Angeles area. Around a dozen of the cats live in the Santa Monica Mountains, and up to 12 more reside to the north, in the Santa Susanas, a range separated by Highway 101.

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