SoCal mountain lion cubs
show signs of inbreeding
Scientists and ecologists celebrated the births of
three mountain lion kittens in the Santa Monica
mountains last month, but new information about
those cubs may prove troubling.
Scientists and ecologists celebrated the births of three
mountain lion kittens in the Santa Monica mountains last
month, but new information about those cubs may prove
troubling.
DNA testing shows inbreeding in these new cubs, and
that
could pose yet another challenge for the big cats who
already
face many issues surviving in close proximity to
freeways,
people and one another.
Over the years, researchers have found seven
mountain lions
that were the products of inbreeding, Seth Riley,
a wildlife
ecologist with the National Park Service, told the
Associated
Press.
Riley says the kittens were healthy but there's
concern that
without new blood, eventually inbreeding could
cause physical
defects, such as heart problems and sterility. The
lions live in a
patchwork of local, state and federal parkland
that stretches
westward from Los Angeles into Ventura County.
"The way mountain lion populations work is that
all young
males typically disperse and even half of the
young females
disperse," Riley told Take Two. "It's almost
impossible in this
situation."
The area is surrounded by densely populated
areas and is
bounded by such major highways as U.S. 101,
which is heavily
developed along most of its length. Young
male mountain lions
that typically would seek their own territories
have been unable
to leave and have been killed by an older male,
Riley said.
Only one puma, P-12, has been able to cross
the 101 freeway in
the 11 years researchers have been tracking
the animals, Riley
told Take Two. But despite bringing new DNA
material into the
area, he sired the inbred cubs with his own
daughter.
"The major issue is the fact that the 101 is
just a development
corridor, so there's almost no place where
there's natural habitat
next to the freeway," Riley said on Take
Two. "They seem to be
trying to disperse, they bump right up
against development on the
101 or they bump up against the 405...
many times they end up
getting killed by an adult male, who they
can't escape from, or
they get hit on the 405 or somewhere else."
A mountain lion was killed by a car on the
101 in October 2013.
The recreation area, state parks, the
Santa Monica Mountains
Conservancy, the California Department
of Transportation and
others have long sought about $10 million
in funding to create
a wildlife corridor in the Agoura Hills
area — essentially, a tunnel
that would allow the mountain lions
and other animals to cross
under U.S. 101.
With contributions from the
Associated Press
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