Nine nematode and two cestode species were recovered from the viscera of 53 mountain lions (Felis concolor) collected from four counties in southwestern Texas. The distribution patterns of the common (> 20% prevalence) helminth species (Taenia omissa, Physaloptera praeputialis, Physaloptera rara, Cylicospirura subaequalis, Ancylostoma tubaeforme, Toxascaris leonina, Metathelazia californica, and Vogeloides felis) were overdispersed and did not change with host age or sex. Abundances of the common helminth species were examined relative to sex and age-groups of the lions. Significant differences were found for abundances of T. omissa, C. subaequalis, and T. leonina between host age-groups, and for T. omissa between host sexes. Only 2 of 29 species were shared among the helminth communities of mountain lions from Texas, Oregon, and Florida, indicating a basic disparity of species common to this host across its geographic range in North America. Taenia omissa is regarded as the single core species across this host's range in North America. New host records are reported for the occurrence of Taenia multiceps, P. rara, Gnathostoma procyonis, A. tubaeforme, and V. felis. Cylicospirura subaequalis is redescribed and compared with Cylicospirura felineus, a species commonly found in Felis lynx and Felis rufus. In addition to previously described bifid versus trifid teeth in C. subaequalis and C. felineus, respectively, differences were noted in the length of spicules in males and the location of the vulva in females.

Seasonal variations in blood chemistry, urine chemistry, fat reserves, and crude protein levels of rumen contents were determined for free-ranging adult female white-tailed deer (Odocoileus virginianus Zimmermann) in central Texas. Seasonal variations (P less than 0.05) existed for serum total protein, albumin, globulin, albumin/globulin ratios, blood urea nitrogen (BUN), cholesterol, alkaline phosphatase, creatinine, phosphorus, and sodium; and urinary urea/creatinine (U/C) ratios, rumen crude protein, the kidney fat index (KFI), femur marrow fat (FMF), and dressed weights. Variations in BUN, urinary U/C ratios, dressed weights, KFI, and FMF were attributed partially to the nutritional demands of late gestation and lactation.

Eighty-six adult female white-tailed deer, Odocoileus virginianus (Zimmermann), collected over a 12-mo period in the Texas Edwards Plateau, harbored six species of nematodes (Haemonchus contortus, Gongylonema pulchrum, Oesophagostomum venulosum, Ostertagia ostertagi, Cooperia sp., and Apteragia odocoilei), and two cestodes (Moniezia sp. and Taenia hydatigena). The patterns of distribution of the three common species of gastrointestinal helminths (H. contortus, O. venulosum, and G. pulchrum) were overdispersed. When analyzed for the main and interactive effects of the extrinsic and intrinsic variables of season and physical condition, respectively, aggregated abundances in H. contortus and O. venulosum appeared to result from the main effect of seasonal changes operating over the collective populations of these two species rather than from the intrinsic factor of physical condition operating within selected subpopulations. Abomasal parasite counts do not appear to be a useful index for monitoring herd condition of white-tailed deer from this geographic region.

No abstract

The arterial nematode, Elaeophona