The current distribution of the introduced fox squirrel (Sciurus niger) in the greater Los Angeles metropolitan area and its behavioral interaction with the native western gray squirrel (Sciurus griseus
Some taxa which have been studied include viverrids (Atilax, Bdeogal, Civettictis, Genetta, Helogale, Herpestes, Ichneumia, Mungos, and Nandinia) from eastern Africa (Taylor 1971), water voles (Arvicola terrestris monticola) from Europe (Ventura and Gotzens 2005), squirrels (Glaucomys sabrinus, Arborimus logicaudus, Tamiasciurus douglasii, Sciurus griseus
, and Tamias spp.) and woodrats (Neotoma spp.) from Oregon (Forsman and Otto 2006), and Virginia opossums (Didelphis virginiana) from Georgia (Mead and Patterson 2009).
Identifying the reservoir hosts of the Lyme disease spirochete Borrelia burgdorferi in California: the role of the western gray squirrel (Sciurus griseus
This allows trainers to maneuver through the area and potentially enhances the site for the western gray squirrel (Sciurus griseus
), a species of concern and a state threatened species.
However, with continued expansion of its range, it has become sympatric in some isolated fragments of suburban habitat and in foothills with the native western gray squirrel Sciurus griseus
(Ingles, 1954; Hoefler and Harris, 1990).
beecheyi), Western gray squirrels (Sciurus griseus
), and Merriam chipmunks (T.
If no resin ducts were found in the nest, it was assumed to have been constructed by another species, e.g., western gray squirrels (Sciurus griseus
), northern flying squirrels (Glaucomys sabrinus), or Douglas squirrels (Tamiasciurus douglasii), all of which build nests externally similar to that of the red tree vole.
We suggest that the eastern gray squirrel might become more damaging to the two native diurnal species of tree squirrels in California, Sciurus griseus
and Tamiasciurus douglasii, than the introduced eastern fox squirrel (Sciurus niger).
Suggested reservoirs in the West include the dusky-footed woodrat (Neotoma fuscipes), for which chronic infection has been observed, and the western gray squirrel (Sciurus griseus
), which are frequently infected in nature (5,6).