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Biomedical subjects

P K Ensley

Publications and source records attributed to P K Ensley.

18 recordsLinked to original sources
PubMed1986

Cryptosporidial infections in captive wild animals.

Neonatal diarrhea was an important cause of morbidity and mortality in a hand-rearing facility for exotic ruminants at the San Diego Wild Animal Park. Studies undertaken to determine the causes of the problem revealed that oocysts of Cryptosporidium sp. were demonstrable in auramine O stained fecal smears from 52 of 183 (28.4%) animals examined. Cryptosporidial infection was identified in 21 of 40 species of exotic ruminants with diarrhea. In addition, cryptosporidia were associated with gastroenteric disease in two primates and two reptiles. It was observed also that auramine O stained coccidial oocysts of the genus Eimeria, which were present in five of 183 (2.7%) of the specimens examined.

Animals↗
PubMed1986

First isolation of calicivirus from reptiles and amphibians.

Calicivirus isolations were made from 4 poikilothermic species in a zoologic collection. Viruses were recovered from 8 asymptomatic Aruba Island rattlesnakes (Crotalus unicolor; rectal swab samples) and from 8 symptomatic animals (4 Aruba Island rattlesnakes, 2 Bell's horned frogs [Ceratophrys orata], 1 rock rattlesnake [C lepidus], and 1 eyelash viper [Bothrops schlegeli] tissue samples obtained at necropsy). On the basis of cross-neutralization test results, the 16 isolates were antigenically indistinguishable and were considered to represent a unique calicivirus serotype, tentatively designated reptilian calicivirus Crotalus type 1. These isolations could not be associated causally with any specific disease entity either in naturally infected poikilotherms or in experimentally infected snakes and pigs.

Animals↗
PubMed1983

Calicivirus isolation and persistence in a pygmy chimpanzee (Pan paniscus).

What may be the first calicivirus isolate from any primate species, including man, was recovered from a herpesvirus-like lip lesion on a pygmy chimpanzee and then, 6 months later, from the throat of the same animal. The infected individual and its cage mates had circulating antibodies that were type-specific for this calicivirus. The agent was antigenically different from 30 other calicivirus serotypes and is tentatively designated primate calicivirus Pan paniscus type 1 (PCV-Pan 1).

Animals↗
PubMed1982

Intestinal obstruction and perforation caused by undigested Acacia sp leaves in langur monkeys.

During a 2-week period, 3 hanuman langurs (Presbytis entellus) died from severe fibrinopurulent and proliferative peritonitis. Partially digested plant material was identified in the necrotic abdominal debris of the 1st and 2nd langurs. In the 3rd, a phytobezoar that extended 17.5 cm distally from the pyloric area had caused a 1-cm perforation. Seven months later, surgery was performed on a douc langur (Pygathrix nemaeus) to remove 1 gastric and 2 intestinal phytobezoars composed primarily of undigested Acacia sp leaves. An analysis of Acacia sp leaves consumed by these langurs revealed a high cell wall concentration (40%, dry basis), with an exceedingly high proportion of this cell wall composed of indigestible lignin. It was concluded that the species of acacia (Acacia saligna and A longifolia) fed in these cases are inappropriate browse items for langurs.

Acacia↗
PubMed1982

Mummified fetus associated with uterine rupture in a New Zealand white rabbit (Oryctolagus cuniculus).

A one-year old female New Zealand white rabbit was examined for anorexia 1 week following observed nesting behavior. On palpation of the abdomen, a freely movable mass was found, and radiography demonstrated a skeletal structure consistent with a fetus. The rabbit was killed, and at necropsy a mummified fetus with a placental remnant was present in the abdomen adjacent to an area of thickening of the left horn of the uterus. Histologic examination confirmed a diagnosis of recent uterine rupture.

Animals↗
PubMed1978

Expornitic of avian pox in a zoo.

During a 6-week period at the San Diego Zoo, avian pox occurred in 9 pheasants representing 5 species. Lesions were limited to facial skin and consisted of epithelial cell hyperplasia, secondary inflammatory changes, and intracytoplasmic eosinophilic inclusion bodies which, by electron microscopy, were shown to contain pox virus. The disease was self-limiting in 7 pheasants, but 2 pheasants died. Free-ranging Indian red junglefowl were implicated as the source of the infection.

Animals↗