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J. O. Knisley

Publications and source records attributed to J. O. Knisley.

5 recordsLinked to original sources
USGS1971

Blood parasites of wood ducks

Examination of blood films from wood ducks ( Aix sponsa ) from several northeastern states revealed Haemoproteus , Leucocytozoon , Plasmodium and a typanosome. Haemoproteus occurred in all areas sampled and birds of the year from Massachusetts demonstrated the highest incidence during the last 2 weeks in August. Leucocytozoon was most prevalent in more northern areas. P. circumflexum and a trypanosome are reported for the first time from this host.

Maine, Maryland, Massachusetts, New York, Ohio, Ve↗
USGS1967

Haemoproteus, a blood parasite, in domestic pigeons and mourning doves in Maryland

The occurrence of Haemoproteus in pigeons throughout the world and in mourning doves in the United States is reviewed. Haemoproteus has previously been reported only once from pigeons in Maryland. During this study it was found in all of 18 pigeons from one area but in none of 12 from an adjacent area. No infections were found in 90 Maryland mourning doves. All of the 10 mourning doves from Florida were infected whereas 60 nestlings from Texas and Mississippi had no parasites. None was found in 358 nestling white-winged doves from Texas.

Chesapeake Science↗