Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41758
Macracanthorhynchus ingens from raccoons in Maryland
There have been very few published records of the occurrence of the acanthocephalan parasite Macracanthorhynchus ingens (von Linstow, 1897) in North America. Chandler (1942) and Moore (1946) reported 11 o 13 raccoons (Procyon lotor) trapped in Angelina County, Texas, infected with these intestinal parasites. From 1 to 90 worms occurred in these animals. Chandler and Melvin (1951), in a study of pa
Authors
Carlton M. Herman
The occurrence of hepatozoon in the gray squirrel (Sciurus carolinensis)
Hepatozoon sciuri (Coles, 1914) is reported from gray squirrels (Sciurus carolinensis) in Washington, D.C. and Maryland. Blood smears stained with Giemsa's stain revealed a parasitemia in 16 to 71% of the squirrels examined. A technique for laking the red cells and concentrating the white cells in blood samples demonstrated this protozoon to be present in every squirrel so tested.
Authors
C. M. Herman, D.L. Price
Skin tumors on squirrels
Skin tumors having the gross appearance of previously reported fibromas are reported on gray squirrels from N. Y., Md., Va., N. C., and W. Va. and from a fox squirrel from W. Va. and a porcupine from Pa.
Authors
C. M. Herman, J.R. Reilly
Trans-uterine migration of blastocysts in the eastern skunk
No abstract available.
Authors
L. M. Llewellyn, R.K. Enders
Severe infestation of blow flies in a raccoon
A raccoon. (Procyon lotor) was observed in a weakened condition for several days at a farm a few miles east of Salisbury, Maryland. It was then caught and held in captivity for a few days. It continued to become weaker and on May 3, 1954, B. Mixon of the Maryland Department of Game and Inland Fish submitted it to us for study. There was no evidence of trauma, either internal or external. The fur w
Authors
L. Kilham, C. M. Herman