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首页> 美国卫生研究院文献>International Journal for Parasitology: Parasites and Wildlife >Distribution prevalence and intensity of moose nose bot fly (Cephenemyia ulrichii) larvae in moose (Alces alces) from Norway
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Distribution prevalence and intensity of moose nose bot fly (Cephenemyia ulrichii) larvae in moose (Alces alces) from Norway

机译：从挪威的驼鹿（Alces Alces）中驼鹿鼻肉片幼虫（Cephenemyia Ulrichii）幼虫的分布患病率和强度

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High host density combined with climate change may lead to invasion of harmful parasites in cervid (host) populations. Bot flies (Diptera: Oestridae) are a group of ectoparasites that may have strong impact on their hosts, but data on the current distribution, prevalence and intensity of the moose nose bot fly (Cephenemyia ulrichii) in Scandinavia are lacking. We estimated prevalence and intensity of nose bot fly larvae in 30 moose from southern and 79 moose from central Norway. All larvae detected were identified as the moose nose bot fly. We found surprisingly high prevalence in these areas, which are up to 1300 km south-southwest of the first published location in Norway and west of the distribution in Sweden. Prevalence (0.44–1.00) was higher in areas with higher moose density. Parasite intensity in hunter killed moose was higher in central Norway (mean 5.7) than southern Norway (mean 2.9), and in both regions higher in calves and yearlings than adults. Fallen moose had higher parasite intensity (mean 9.8) compared to hunter killed moose in the subsample from central Norway, suggesting a link to host condition or behavior. Our study provides evidence of parasite range expansion, and establishing monitoring appears urgent to better understand impact on host populations.
机译：高宿主密度与气候变化相结合可能导致侵袭CervID（宿主）群体的有害寄生虫。机器人苍蝇（Diptera：Oestridae）是一群可能对其宿主产生强烈影响的一组异位遗传癖，但缺乏斯堪的纳维亚州莫斯鼻子机器人飞行（Cephenemyia Ulrichii）的当前分布，患病率和强度的数据。我们估计挪威中部30驼鼻器滴水幼虫的患病率和强度。检测到的所有幼虫被鉴定为驼鹿鼻机飞行。在这些地区，我们发现令人惊讶的高度普遍存在，它在挪威的第一个出版地理位置的南北1300公里，位于瑞典的分销。流行率（0.44-1.00）在莫斯密度较高的区域较高。猎人的寄生虫强度在挪威中部（平均5.7）比挪威南部（平均2.9），并且在犊牛和一岁的地区都比成年人更高。与来自中央挪威中央的子样本中的猎人杀死驼鹿相比，堕落驼鹿具有更高的寄生虫强度（平均9.8），建议宿主条件或行为的链接。我们的研究提供了寄生虫系列扩张的证据，并建立监测似乎迫切地理解对宿主人群的影响。

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