Lesions caused by Parelaphostrongylus odocoilei (Nematoda: Metastronglyloidea) in two cervid hosts.
Pathologic effects and host response were evaluated in seven white-tailed deer (Odocoileus virginianus) and six mule deer (O. hemionus hemionus) each exposed per os to 300 or 1000 third-stage larvae of Parelaphostrongylus odocoilei. Pathologic effects in mule deer consisted of hemorrhagic myositis throughout skeletal muscles, severe verminous pneumonia, and moderate lymphadenitis. The major host response was a granulomatous inflammation associated with nematode eggs and larvae. Granulomas obliterated the normal architecture of affected tissues. Pathologic effects and host response were minimal in white-tailed deer. P. odocoilei is considered a potential direct or indirect pathogen in mule deer but an insignificant parasite in white-tailed deer.
D000009:Abdominal Muscles / Q000473:pathology; D000818:Animals; D003670:Deer; D008168:Lung / Q000473:pathology; D008198:Lymph Nodes / Q000473:pathology; D008681:Metastrongyloidea; D009132:Muscles / Q000473:pathology; D009349:Nematode Infections / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*; D013045:Species Specificity