Van den Bussche R A, Kennedy M L, Wilhelm W E
J Parasitol. 1987 Apr;73(2):327-32.
From 1980 to 1984, 267 coyotes (Canis latrans) from Tennessee were examined for helminth parasites. Hearts were examined for the presence of Dirofilaria immitis, diaphragms for Trichinella spiralis, and digestive tracts for other helminths. Six species were found including 5 nematodes (D. immitis, Physaloptera rara, Trichuris vulpis, Ancylostoma caninum, and Toxascaris leonina) and 1 cestode (Taenia pisiformis). Univariate and multivariate statistical techniques were used to assess parasite prevalence and intensity. For prevalence data, a matrix of correlation among characters was computed, and the first 3 principal components were extracted from the original distance matrix. These accounted for 93.7% of the variation in the character set. Three-dimensional projections of localities showed spatial variability on each component. Significant relationships were found between principal component I and longitude, component II and latitude and mean January temperature, and component III and mean July precipitation and mean January actual evapotranspiration. For intensity data, no spatial variability was determined.
1980年至1984年期间，对来自田纳西州的267只郊狼（犬属）进行了蠕虫寄生虫检查。检查心脏是否存在犬恶丝虫，检查膈肌是否存在旋毛虫，检查消化道是否存在其他蠕虫。共发现6个物种，包括5种线虫（犬恶丝虫、稀有泡翼线虫、狐鞭虫、犬钩虫和狮弓蛔虫）和1种绦虫（豆状带绦虫）。使用单变量和多变量统计技术评估寄生虫的感染率和感染强度。对于感染率数据，计算了性状之间的相关矩阵，并从原始距离矩阵中提取了前3个主成分。这些主成分占性状集变异的93.7%。各地点的三维投影显示了每个成分上的空间变异性。发现主成分I与经度、成分II与纬度和1月平均温度、成分III与7月平均降水量和1月平均实际蒸散量之间存在显著关系。对于感染强度数据，未确定空间变异性。
