Naturally occurring fluorescence in frogs.

Coinfection Associated with Naturally Occurring Cryptosporidiosis in Broilers

Naturally occurring ehrlichiosis in Egyptian dogs

Canine ehrlichiosis has emerged as one of the most clinically important tick-borne diseases affecting dogs. Eighty-five naturally infected dogs have been investigated, the most consistent clinical signs recorded were fever, emaciation and lymphoadenopathy, anemia, monocytosis, thrompocytopenia, hypoalbuminemia, elevation in liver enzymes and total bilirubin were the most remarkable changes asso...

Radiological dose assessment of naturally occurring radioactive materials generated by the petroleum industry in wildlife: A case study of chinkaras of Lavan Island, Iran

Human activities such as oil and gas production can enhance the natural level of naturally occurring radioactive materials (NORM) in by-product and waste streams. Iran has been among the top five oil producing countries since 2005. This high production rate emphasizes the importance of NORM management to ensure the safety of humans and wildlife. Petroleum storage and transport facilities are lo...

Early replication of herpesviruses in naturally occurring frog tumors.

Renal adenocarcinomas of the leopard frog, Rana pipiens, collected in Kandiyohi County, Minn., were fixed for electron microscopy prior to and 4, 7, 13, and 16 days after the entry of host frogs into lakes for overwintering. Fifteen tumors were studied. No herpesviruses were detected in 4 tumors of prehibernating frogs. Two tumors of frogs autopsied on Day 4 of overwintering did not show viruse...

Explanation for naturally occurring supernumerary limbs in amphibians.

The occasional occurrence of high frequencies of limb abnormalities, including extra limbs, in natural populations of amphibians has long been a puzzle. In this paper we report the discovery of a population in which such limb abnormalities appear to be caused by a parasitic flatworm (trematode) that uses amphibians as intermediate hosts. The cercarial larval stage of the trematode attacks amphi...