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首页> 外文期刊>Parasitology >Associations between trematode infections in cattle and freshwater snails in highland and lowland areas of Iringa Rural District, Tanzania
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Associations between trematode infections in cattle and freshwater snails in highland and lowland areas of Iringa Rural District, Tanzania

机译：坦桑尼亚伊林加农村区高地和低地地区牛和淡水蜗牛的吸虫吸虫感染之间的关联

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摘要

The epidemiology of trematode infections in cattle was investigated within highland and lowland areas of Iringa Rural District, in southern Tanzania. Fecal samples were collected from 450 cattle in 15 villages at altitudes ranging from 696 to 1800 m above the sea level. Freshwater snails were collected from selected water bodies and screened for emergence of cercariae. The infection rates in cattle were Fasciola gigantica 28.2%, paramphistomes 62.8% and Schistosoma bovis 4.8%. Notably, prevalence of trematode infections in cattle was much higher in highland (altitude > 1500 m) as compared with lowland (altitude < 1500 m) areas and was statistically significant (P-value = 0.000) for F. gigantica and paramphistomes but not for S. bovis. The snails collected included Lymnaea natalensis, Bulinus africanus, Bulinus tropicus, Bulinus forskali, Biomphalaria pfeifferi, Melanoides tuberculata and Bellamya constricta with a greater proportion of highland (75%) than lowland (36%) water bodies harbouring snails. Altitude is a major factor shaping the epidemiology of F. gigantica and paramphistomes infections in cattle in Iringa Rural District with greater emphasis upon control needed in highland areas.
机译：在坦桑尼亚南部伊林加农村地区的高地和低地地区，对牛的吸虫感染的流行病学进行了调查。从海拔696至1800 m的15个村庄的450头牛中采集粪便样本。从选定的水体中收集淡水蜗牛，并筛查尾的出现。牛的感染率分别为巨大的Fasciola gigantica 28.2％，淋巴组62.8％和牛血吸虫（Schistosoma bovis）4.8％。值得注意的是，与低地（海拔<1500 m）地区相比，高地（海拔> 1500 m）牛的吸虫感染的发生率要高得多，并且巨无花果蝇和近鞭毛虫在统计学上具有显着意义（P值= 0.000），但对于牛肝菌收集的蜗牛包括百里香（Lymnaea natalensis），非洲大头翁（Bulinus africanus），热带大头翁（Bulinus tropicus），福斯利（Bulinus forskali），Biomphalaria pfeifferi，美拉诺（Melanoides tuberculata）和贝拉米斯（Bellamya constricta），其中高地（75％）比低地（36％）带有蜗牛的水体比例更高。海拔高度是影响伊林加农村地区牛的巨大镰刀菌和淋巴瘤感染流行病学的主要因素，而高海拔地区则更加需要控制。

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