关键词: 山羊, 寄生蠕虫, 种群, 群落, 抗氧化酶, 干旱胁迫, 叶绿素荧光, 渗透调节

Abstract: Thirteen species of helminths, including6 trematoda, 1 cestoda and 6 nematoda, were collected from 30 goats. The total infection rate was 100%, and the mean infection intensity of the helminths was 646. Among the 13 species studied, Paramphistomum cervi had the highest total infection rate and mean infection intensity. The goats were infected by 1 to 8 helminth species which were all aggregated. There were eight dominant species in the helminth community. The infection rate and the density of the helminths had no correlation with the sex and the age of the goats. Interspecific association analysis showed that there were affinities for seven species pairs, and significant positrve and negative associations for two and three species pairs of the helminths, respectively.

Key words: Goats, Helminths, Populations, Community, drought stress, antioxidase, osmotic adjustment, chlorophyll fluorescence