Epidemiological characteristics of an invading parasite:: Dicrocoelium dendriticum in sympatric wapiti and beef cattle in southern Alberta, Canada
Epidemiological characteristics of an invading parasite:: Dicrocoelium dendriticum in sympatric wapiti and beef cattle in southern Alberta, Canada
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DOI：
10.1645/ge-1060r.1
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发表时间：
2007-06-01
影响因子：
1.3
通讯作者：
Colwell, Douglas D.
中科院分区：
文献类型：
--
作者：
Goater, Cameron P.;Colwell, Douglas D.
先前对野生有蹄类动物的调查表明，肝吸虫，Dicrocococopalidendicum，在阿尔伯塔东南部的柏树山地区是罕见的。然而，在2003年和2004年狩猎季节从该地区取样的59头马鹿（马鹿）中有41头被感染，7个宿主含有1 000多条蠕虫。流行率和平均强度同样高，同域肉牛和骡鹿。马鹿的蠕虫丰度与年龄有关，小牛的蠕虫数量（平均值+/- SD丰度= 825 +/-1，098）显著高于成年马鹿（107 +/- 259）。这种模式与主机的年龄是不明显的肉牛，虽然较小的样本量可能是一个因素。这些结果表明D. dendriticin现在在Cypress Hills Park很好地建立，在至少3种同域有蹄类动物之间传播，包括肉牛。
Previous surveys of wild ungulates indicate that the liver fluke, Dicrocoelium dendriticum, was rare in the Cypress Hills area of southeastern Alberta. However, 41 of 59 wapiti (Cervus elaphus) sampled during the 2003 and 2004 hunting seasons from this region were infected, with 7 hosts containing > 1,000 worms. Prevalence and mean intensity were similarly high in sympatric beef cattle and mule deer. Worm abundance in wapiti was age related, with calves containing significantly higher numbers of worms (mean +/- SD abundance = 825 +/- 1,098) than adults (107 +/- 259). This pattern with host age was not evident in beef cattle, although the smaller sample sizes may be a contributing factor. These results indicate that D. dendriticuln is now well established in Cypress Hills Park, circulating between at least 3 species of sympatric ungulates, including beef cattle.