Geology topics

George Stein

Publications and source records attributed to George Stein.

2 recordsLinked to original sources

USGS1997

Avian cholera in ospreys: first occurrence and possible mode of transmission

In 1994, six Ospreys (Pandion haliaetus) were recovered during the later stages of an epizootic of avian cholera (Pasteurella multocida) in diving ducks and seabirds on Chesapeake Bay in Maryland and Virginia. Pasteurella multocida was isolated from four Ospreys submitted for bacterial examination. This is believed to be the first report of avian cholera in Ospreys. The same isolate, serotype 3,4, was isolated from the Ospreys, diving ducks,and seabirds collected during the epizootic. Possible modes of transmission of avian cholera in Ospreys were either the ingestion of sick waterfowl or use of infected carcasses or bones as nest material.

Maryland, Virginia↗

USGS1981

An outbreak of duck virus enteritis (duck plague) in a captive flock of mixed waterfowl

An outbreak of duck virus enteritis occurred in a flock of captive waterfowl composed of mallards ( Anas platyrhynchos ), black ducks ( Anas rubripes ), and Canada geese ( Branta canadensis ). Although all three species were housed together, morbidity and mortality were confined to the 227 black ducks and Canada geese, of which 180 died and the rest were left in a weakened condition. Lesions are given for 20 black ducks and 4 Canada geese dying from DVE. In addition, both horizontal and vertical transmission are discussed as possible sources of the virus that caused this outbreak.

California, Nebraska, Nevada↗