Geology topics
L. N. Locke
Publications and source records attributed to L. N. Locke.
An outbreak of fowl cholera in waterfowl on the Chesapeake Bay
An outbreak of fowl cholera ( Pasteurella multocida infection) occurred in waterfowl wintering on the Chesapeake Bay during February to March 1970. Losses were primarily confined to sea ducks: oldsquaws ( Clangula hyemalis ), white-winged scoters ( Melanitta deglandi ), golden-eyes ( Bucephala clangula ), and buffleheads ( Bucephala albeola ).
Status of duck virus enteritis (duck plague) in the United States
No abstract available.
Organochlorine residues and autopsy data from bald eagles 1966-68
Sixty-nine bald eagles found moribund or dead in 25 States during 1966-68 were analyzed for pesticide residues. Residues of polychlorinated biphenyls and DDE were detected in all samples of eagle carcasses; residues of dieldrin were detected in 68 and residues of DDD in 64; DDT, heptachlor epoxide, and DCBP were detected less frequently. Eight specimens had levels of dieldrin in the brain within the lethal range, and another probably died of DDT poisoning. Autopsy revealed that illegal shooting was the most frequent cause of mortality of these eagles; electrocution, impact injuries, probable lead poisoning, and infectious avian diseases were other causes of mortality.
A winter record of the Wilson's warbler at the Patuxent Wildlife Research Center, Laurel, Maryland
No abstract available.
Lead poisoning and aspergillosis in an Andean condor
Explore the source record for details and available documents.
Aspergillosis in a bald eagle (Haliaeetus leucocephalus)
No abstract available.
The occurrence of lead in tissues of wild birds
No abstract available.
Case report: Coccidiosis and lead poisoning in Canada geese
Four dead Canada geese (Branta canadensis L.) collected at the Prime Hook National Wildlife Refuge, Delaware were found to have both marked duodenal lesions of coccidiosis and high levels of lead in the liver. Although only one goose had lead shot in the gizzard, all four had levels of lead in the liver suggestive of lead poisoning.
Lead poisoning in a sample of Maryland mourning doves
A sick mourning dove ( Zenuidura macroura ) collected in Maryland with 2 lead shot in the gizzard showed acid-fast intranuclear inclusion bodies in the kidney tubular cells. The liver and the tibia contained 72 ppm and 187 ppm lead (wet weight) respectively. Four gizzards from 62 doves killed by hunters contained lead shot. The lead content of 43 dove livers ranged from 0.4-14.0 ppm (wet weight); 40 of these doves were collected by hunters, and the other 3 were dying of trichomoniasis.
Aspergillosis in a common loon (Gavia immer)
No abstract available.
The ineffectiveness of acid-fast inclusions in diagnosis of lead poisoning in Canada geese
No abstract available.
Histopathology of mallards dosed with lead and selected substitute shot
The histopathological response of male game farm mallards fed lead, three types of plastic-coated lead, two lead-magnesium alloys, iron, copper, zinc-coated iron, and molybdenum-coated iron shot was studied. Mallards fed lead, plastic-coated lead, or lead-magnesium alloy shot developed a similar pathological response, including the formation of acid-fast intranuclear inclusion bodies in the kidneys. Birds fed iron or molybdenum-coated iron shot developed hemosiderosis of the liver. Two of four mallards fed zinc-coated iron shot also developed hemosiderosis of the liver. No lesions were found in mallards fed copper shot.
Spermatogenesis in bald eagles experimentally fed a diet containing DDT
When Bald Eagles were fed DDT in the diet at the level of 10 ppm (dry weight basis) for periods of 60 and 120 days, there was no interference with spermatogenic activity. Degenerative testicular changes were produced only by levels of DDT that produced abnormal neurological signs and usually resulted in death. Histological examination of these testes indicates that Bald Eagles have a seasonal testicular cycle similar to that reported for many other birds of the Northern Hemisphere.
The occurrence of Trichomonas gallinae in white-winged doves in Arizona
No abstract available.
Acid-fast intranuclear inclusion bodies in the kidneys of mallards fed lead shot
Acid-fast intranuclear inclusion bodies were found in the cells of the proximal convoluted tubules of the kidneys of mallards fed one, two, three or eight number 6 lead shot and maintained on cracked or whole corn and on grain-duck pellet diets. No acid-fast inclusion bodies were found in mallards fed one or three lead shot but maintained on a duck pellet ration. Dietary factors may be responsible for the failure of mallards fed a duck pellet ration to develop lead Inclusion bodies when treated with one or three lead shot. The authors suggest these inclusion bodies can be used as presumptive evidence for lead intoxication in mallards.
Additional records of aspergillosis among passerine birds in Maryland and the Washington, DC metropolitan area
Two cases of aspergillosis involving four adult cowbirds ( Molothrus ater ) collected during the nesting season are reported. Aspergillosis was found in house sparrows ( Passer domesticus ) on two occasions.