The host switching of Hypoderma actaeon (Diptera: Oestridae), a specific parasite of red deer (Cervus elaphus), towards roe deer (Capreolus capreolus) has been recently reported in Spain. To provide information about the temporal and spatial spreading of H. actaeon infection in roe deer, 244 serum samples from animals hunted in Spain between 2013 and 2018 were analysed by an indirect enzyme-linked immunosorbent assay. The overall seropositivity was 13.9%. Seropositivity was higher in continental (27.7%) and mountainous (12%) areas from central Spain, followed by southern-Mediterranean (11.2%) and northern-oceanic regions (3.5%). Differences were significant between central-continental and northern-oceanic regions (P = 0.003). No differences were found according to the sex and age of roe deer (P > 0.05). In 2013, all seropositive animals were concentrated in two distant areas in central and southern Spain, suggesting that the host switch could have occurred independently in both regions. Changes in the pattern of distribution of red deer and roe deer could have favoured the spreading of this myiasis towards roe deer, indicating that roe deer may become infested by H. actaeon in areas where both cervids coexist at high densities.

中文翻译：

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通过间接酶联免疫吸附测定法确定西班牙半岛ro鹿中的Hypoderma actaeon感染在时间和空间上的传播。

最近在西班牙有报道称，马鹿的一种特定寄生物即次细菌（Hypoderma actaeon）（Diptera：Oestridae）向towards（Capreolus capreolus）的宿主转变。为了提供关于act虫嗜血杆菌感染在时间和空间上分布的信息，通过间接酶联免疫吸附试验分析了2013年至2018年在西班牙狩猎的动物的244个血清样本。总体血清阳性率为13.9％。西班牙中部的大陆地区（27.7％）和山区（12％）的血清阳性率更高，其次是地中海南部（11.2％）和北洋地区（3.5％）。中部大陆和北洋地区之间存在显着差异（P = 0.003）。根据the的性别和年龄没有发现差异（P> 0.05）。在2013年，所有血清反应阳性的动物都集中在西班牙中部和南部两个遥远的地区，这表明宿主的转换可能在两个地区都独立发生。马鹿和ro的分布方式的改变可能有利于这种肌病向towards的传播，这表明在两个鹿高密度共存的地区，act虫可能会被人为标本侵染。