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January 1, 1983

The white pelican (Pelicanus erythrorhynchos) as a host of Pelecanectes apunctatus (Acarina: Hypoderidae) The white pelican (Pelicanus erythrorhynchos) as a host of Pelecanectes apunctatus (Acarina: Hypoderidae)

Several species of nymphs from the family Hypoderidae have been reported from pelecaniform birds (Cerny, 1969, Folia Parasit. (Praha) 16:271-274; Pence, 1972, J. Med. Ent. 9: 435-438; Pence and Courtney, 1973, J. Parasitol. 59: 711-718); however, there are no records from the white pelican, Pelecanus erythrorhynchos. I report here the occurrence of hypopi from this host species.

Authors

B.N. Tuggle

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1983

Waterbird mortality from botulism type E in Lake Michigan: An update Waterbird mortality from botulism type E in Lake Michigan: An update

Three outbreaks of botulism type E occurring in waterbirds on Lake Michigan since autumn 1976 are discussed. Natural ingestion of food containing type E toxin by Ring-billed Gulls (Larus delawarensis) and the presence of type E toxin in blood from moribund gulls were demonstrated. Concurrent presence of type C and type E botulinal toxins was found in a die-off of Common Loons (Gavia...

Authors

Christopher J. Brand, Ruth M. Duncan, Scott P. Garrow, Dan Olson, Leonard E. Schumann

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1983

Preliminary evaluation of Ivermectin for control of Psoroptes ovis in Desert Bighorn Sheep Preliminary evaluation of Ivermectin for control of Psoroptes ovis in Desert Bighorn Sheep

No abstract available.

Authors

H.G. Kinzer, W.P. Meleney, Robert E. Lange, W.E. Houghton

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1983

Research note: Isolation of a herpesvirus from a bald eagle nestling Research note: Isolation of a herpesvirus from a bald eagle nestling

Cloacal swabs collected from wild bald eagle nestlings (Haliaeetus leucocephalus) were tested for viruses. A virus isolated from one of these samples had a lipid coat and contained DNA. Electron microscopy confirmed that it was a herpesvirus. This appears to be the first report of a herpesvirus isolation from a wild bald eagle.

Authors

D. E. Docherty, R.I. Romaine, R.L. Knight

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1983

Capture myopathy in a free-flying greater sandhill crane (Grus canadensis tabida) from Wisconsin Capture myopathy in a free-flying greater sandhill crane (Grus canadensis tabida) from Wisconsin

No abstract available.

Authors

R. M. Windingstad, S.S. Hurley, L. Sileo

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1982

Causes of mortality in 87 Alaskan eagles Causes of mortality in 87 Alaskan eagles

No abstract available.

Authors

Shelia K. Schmeling, L. N. Locke

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1982

Psoroptic scabies Psoroptic scabies

Scabies, caused by mites of the genus Psoroptes, is widespread in free-ranging desert bighorn sheet, Rocky Mountain bighorn sheep, elk, and white-tailed deer. It has been identified on captive mule deer and may have been present on bison.

Authors

R.E. Lange

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1982

Parasites of the bald eagle (Haliaeetus leucocephalus) of North America Parasites of the bald eagle (Haliaeetus leucocephalus) of North America

No abstract available.

Authors

B.N. Tuggle, Shelia K. Schmeling

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1982

Occlusion of the syrinx as a manifestation of aspergillosis in Canada geese Occlusion of the syrinx as a manifestation of aspergillosis in Canada geese

Aspergillosis has been described in many species of wild waterfowl, primarily as a disease of the respiratory tract. Typically, mycotic granulomas are found in the lungs. Air sacs may be thickened and contain discoid individual or coalescing greenish or bluish plaques resembling bread mold. Occasionally, there is systemic involvement, with granulomas in multiple organs. Carcasses often...

Authors

R. K. Stroud, R. M. Duncan

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1982

Aversion substance(s) of the rat coagulating glands Aversion substance(s) of the rat coagulating glands

The aversive substance(s) present in adult male urine were not found in castrate rat urine. Removal of the coagulating glands also resulted in a loss of the aversion compounds. The aversion substances were restored to the urine after androgen treatment of the castrate rats.

Authors

Anthony M. Gawienowski, Iver J. Berry, James J. Kennelly

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1982

Bibliography of references to avian botulism: Update Bibliography of references to avian botulism: Update

This bibliography, first compiled in 1970 (Allen and Wilson 1977) and published in 1977 in response to many requests for information on avian botulism, has been updated to include the literature published through 1980. In general, only articles dealing primarily with the avian disease are included, as opposed to those concerned with the various aspects of the biology of Clostridium...

Authors

Sonoma S. Wilson, Louis N. Locke

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1982

Chlamydiosis in 2 biologists investigating disease occurrences in wild waterfowl Chlamydiosis in 2 biologists investigating disease occurrences in wild waterfowl

Chlamydiosis (ornithosis, psittacosis) is an infectious disease of birds that can be transmitted to humans. Human infections are probably acquired by inhalation of aerosols containing elementary bodies of the causative agent Chlamydia psittaci, from bird droppings, or from tissues. Infected birds do not have to be ill to transmit the organism (Schachter and Dawson 1978). The disease in...

Authors

Gary Wobeser, Christopher J. Brand

Ecosystems Mission Area, National Wildlife Health Center