Mountain lions near Los Angeles fenced in by urbanisation
Mountain lions found near Los Angeles' Santa Monica mountains are completely isolated from other populations of their species by the barrier of urbanised areas and a freeway to the north.
The mountain lions of Santa Monica are a rare example of the large carnivore persisting within the limits of a megacity.
Over the past decade, only one young male from outside the area managed to enter the habitat of the mountain lions of Santa Monica, while none of those living there ever left the area, according to a study led by Seth Riley of the US National Park Service.
"Large carnivores can be particularly sensitive to the effects of habitat fragmentation on genetic diversity," the authors said.
Due to their almost complete isolation, the Santa Monica mountain lions exhibit dangerously low levels of genetic diversity, and the sole male that entered the area from the outside in 2009 "successfully mated, and substantially enhanced genetic diversity" among the entire population.
Among the types of behaviour characteristic of isolation, researchers found many cases of "father-daughter inbreeding", and mountain lions killing their cubs, mates, siblings and others of their species.
Such behaviour, scientists say, is unusual and never occurs if sufficient movement and contact among different populations is possible.
Riley said that for the long-term survival of Santa Monica's mountain lions, it is vital to establish ways of connecting them with other populations of their feline species.
(Posted on 16-08-2014)
Information on States of India:
Andaman Nicobar | Andhra Pradesh | Arunachal Pradesh | Assam | Bihar | Chandigarh | Chhattisgarh | Dadar Nagar Haveli | Daman Diu | Delhi | Goa | Gujarat | Haryana | Himachal Pradesh | Jammu Kashmir | Jharkhand | Karnataka | Kerala | Lakshadweep | Madhya Pradesh | Maharashtra | Manipur | Meghalaya | Mizoram | Nagaland | Orissa | Pondicherry | Punjab | Rajasthan | Sikkim | Tamil Nadu | Tripura | Uttar Pradesh | Uttaranchal | West Bengal
INDIA REGIONAL MAPS:
Andhra Pradesh Travel Map | Bihar Travel Map | Goa Travel Map | Gujarat Travel Map | Haryana Travel Map | Himachal Pradesh Map | Karnataka Travel Map | Kerala Travel Map | Maharashtra Travel Map | Punjab Travel Map | Rajasthan Travel Map | Sikkim Travel Map | Tamil Nadu Travel Map | Uttar Pradesh Travel Map | West Bengal Travel Map |
KERALA TRAVEL MAPS:
TRAVEL MAPS OF INDIA:
INDIA CITY MAPS: