77 
Northern Flying Squirrel in Virginia 
have had no recaptures or new captures of G. sabrinus at the Highland 
Co. locations to date. Finally, it has also been noted that G. volans 
carries a parasitic nematode of the genus Strongyloides , and it has been 
suggested that this nematode is lethal to G. sabrinus (Weigl 1977). Each 
of the three G. sabrinus that we were able to examine and report here 
harbored S. robustus, and it appeared that each was a healthy adult 
animal until its death. In West Virginia, Stihler et al. (1987) reported 
that “the 1 northern flying squirrel for which parasitological data are 
available was infected with Strongyloides, but there was no evidence 
this was debilitating.” Certainly, these data are limited and more study 
is needed on all aspects of the biology of G. sabrinus , including its 
interactions with G. volans, if we are to develop guidelines for its 
recovery. 
ACKNOWLEDGMENTS. — This paper, in part, is a result of a 
study on the northern flying squirrel by the Virginia Department of 
Game and Inland Fisheries (VDGIF) and the U.S. Forest Service. The 
studies of the senior author have also been supported, in part, by funds 
from the VDGIF Nongame Wildlife and Endangered Species Program. 
The field assistance of numerous VDGIF biologists and game managers, 
as well as several U.S. Forest Service personnel on the George 
Washington and Thomas Jefferson National Forests, is greatly appre- 
ciated. The authors are also grateful to Kenneth B. Knight and Craig 
W. Stihler and the numerous individuals who have provided helpful 
information or comments on this manuscript, including Walter Bulmer, 
Jack A. Cranford, Charles O. Handley, Jr., Judy Jacobs, Karen 
Terwilliger, J. Lewis Payne, Donald R. Young, and Peter D. Weigl. 
LITERATURE CITED 
Davidson, W. R. 1976. Endoparasites of selected populations of gray 
squirrels ( Sciurus carolinensis) in the southeastern United States. Proc. 
Helminthological Soc. Wash. 43:211-217. 
Eckerlin, R. P. 1974. Studies on the life cycle of Strongyloides robustus 
Chandler, 1942, and a survey of the helminths of Connecticut sciurids. 
Ph.D. thesis, Univ. Connecticut. 
Eckerlin, R. P. 1985. Parasites of suburban gray squirrels, Sciurus 
carolinensis , in northern Virginia. Va. J. Sci. 36:107. 
Fies, M. L., and J. F. Pagels. 1988. Northern flying squirrel investigations. 
Pages 75-80 in Virginia Nongame and Endangered Wildlife Investi- 
gations, Annual Report 1987-1988, Va. Dept. Game and Inland Fish. 
Handley, C. O., Jr. 1953. A new flying squirrel from the southern 
Appalachian Mountains. Proc. Biol. Soc. Wash. 66:191-194. 
