December 9, 2022 #1 Local News, Information and Event Source for the Century City/Westwood areas.

Adult Female P-65 Is the First Mountain Lion in Study to Die of Complications From Mange

P-65 was found dead by biologists on March 4, 2022, near a stream in the central Santa Monica Mountains

Adult female mountain lion P-65 is the first mountain lion in a two-decade-long National Park Service (NPS) research study to have died of complications from notoedric mange, a highly contagious skin disease caused by a mite parasite.

P-65 was found dead by biologists on March 4, 2022, near a stream in the central Santa Monica Mountains, where she lived. She was estimated to be around five years of age.

Her case of mange was severe, evidenced by hair loss and skin encrustation, especially on her face and head. She was also extremely emaciated.

After death, she was taken to the California Animal Health and Food Safety Lab (CAHFS) for a full necropsy and testing. Toxicological tests revealed that she was exposed to five different anticoagulant rodenticides, also known as rat poisons, and to bromethalin, a neurotoxic rodenticide. The five anticoagulant rodenticide compounds detected in P-65’s liver, brodifacoum, bromadiolone, difethialone, chlorophacinone, and diphacinone, included both first-generation and longer-lasting and faster-acting second-generation compounds.

“We’ve had several radio-collared mountain lions that have contracted mange in the past, although in previous cases we were able to treat them with a topical anti-parasitic medicine,” said Jeff Sikich, a wildlife biologist with the park who leads the fieldwork on the mountain lion project. “All of these animals recovered from their mange disease as best as we could tell from remote camera photos or later examination. However, in P-65’s case, we did not know about her disease until after she had died.”

Notoedric mange is a skin disease resulting from infection by mites in the genus Notoedres which affects wild cats such as bobcats and mountain lions, as well as other wildlife species including squirrels and rabbits.

Through long-term NPS research on bobcats in the Santa Monica Mountains and Simi Hills, notoedric mange was found to be a major source of mortality since it was first documented in late 2001. This research has shown a strong correlation between severe mange and the level of exposure to anticoagulant rodenticides, and through collaboration with colleagues at UCLA, AR exposure was associated with multiple impacts on bobcat immune systems at both physiological and genetic levels.

These impacts of toxicant exposure on an animal’s immune system may in turn make them more susceptible to contracting mange disease.Mountain lions that we were able to test that have been documented with mange have also been exposed to ARs, although virtually every mountain lion tested overall has also been exposed. In mountain lions, six collared animals and seven animals overall have been documented to have died from the direct effects of the poisons, specifically bleeding to death internally after the toxicants prevented their blood from clotting.

Biologists say that P-65 was an interesting cat to study.

She was first captured and collared in the central portion of the Santa Monica Mountains in March 2018. She survived the Woolsey Fire in November 2018, and based on her GPS locations, her home range was found to be entirely within the overall burn perimeter, although during this time she largely used the southeast corner of the burn where there were some sizable, unburned islands.

In August 2019, P-65 became the second radio-collared female mountain lion to cross the 101 Freeway in the study’s history. She moved northward into the Simi Hills from the Liberty Canyon area of Agoura Hills, where the Wallis Annenberg Wildlife Crossing is currently under construction. Biologists believe P-65 most likely ran across the actual roadway. She eventually crossed the freeway again, returning to the central Santa Monica Mountains in the following weeks.

In the summer of 2020, P-65 gave birth to a litter of three kittens, P88, P89, and P90. Last year, biologists captured the two remaining kittens – males P-89 and P-90 – to place GPS radio collars on them. Interestingly, both P-89 and P-90 had mange when captured. The two cats were both treated for mange, and remote camera photos later indicated that they had likely recovered. Unfortunately, both P-89 and P-90 were killed on local roads after dispersing from their mother. P-89 recently died on the 101 Freeway in Woodland Hills in July 2022 and P-90 died several weeks ago on Highway 33 just south of Ojai in Ventura County.

NPS has been studying mountain lions in and around the Santa Monica Mountains for the last two decades to determine how they survive in a fragmented and urbanized environment. CDFW is responsible for overseeing the management and conservation of mountain lions in the state.

in News
Related Posts

Dunkin’ Donuts Now Open in Westwood Village

December 8, 2022

December 8, 2022

Chain now open at 1001 Gayley Avenue By Dolores Quintana In the good news department for everyone in the Westwood...

No Century City or Westwood Restaurants Awarded Michelin Stars

December 7, 2022

December 7, 2022

18 new California restaurants added to the guide By Dolores Quintana The Michelin Restaurant Guide has released its list of...

Local Art Studio Hosts Toy Drive and Winter Camps

December 7, 2022

December 7, 2022

The Paint:Lab in Santa Monica is hosting winter camps and a toy drive. Learn how to get involved in this...

Local Artist Undertaking Acorn Planting Project in the Santa Monica Mountains

December 6, 2022

December 6, 2022

Rebecca Youseff raising environmentalism awareness through art By Keemia Zhang  Los Angeles artist Rebecca Youseff is carrying out a project...

11th Anniversary of the Venice Sign Lighting

December 6, 2022

December 6, 2022

Venice celebrates the 11th year of lighting the Venice sign on Windward ave for the holidays!.Video sponsored by School of...

LAFD Put out Veteran Avenue Home Fire

December 6, 2022

December 6, 2022

Saturday morning fire put out in 17 minutes The LAFD made quick work putting out a fire that broke out...

Local Man Sentenced to 9 Years in Federal Prison for Role in Scam Involving Fake Open Houses at Not-for-Sale Homes

December 5, 2022

December 5, 2022

Adolfo Schoneke sentenced to 54 years in federal prison in connection to $6 million real estate scam A South Bay...

43-Unit Development Planned Near Expo/Sepulveda Station

December 3, 2022

December 3, 2022

Five-story building planned for 2600-2616 South Sepulveda By Dolores Quintana Another multifamily residential development has been approved near the Expo...

Los Angeles Home Prices Drop for Third Month in a Row

December 2, 2022

December 2, 2022

 Forbes analist shows pullback from buyers in Los Angeles home market By Dolores Quintana After a seller’s market reigned, the...

Lyft Withdraws Scooters and Bikes From LA-Area

December 2, 2022

December 2, 2022

Santa Monica down to three shared-mobility companies By Dolores Quintana Lyft has removed its micro-mobility services from the cities of...

Man Wanted for Sexually Assaulting Hiker in Santa Monica Mountains

December 2, 2022

December 2, 2022

Man in his 30s sought in connection to November 21 sexual assault By Sam Catanzaro Police are searching for a...

NPS Says Mountain Lion That Killed Chihuahua in Hollywood Hills Was P-22

December 1, 2022

December 1, 2022

Mountain lion will not be euthanized, NPS says By Sam Catanzaro During the evening of November 9, a large animal...