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首次从家猪(野猪)中检测到疥螨,并对以色列宠物、农场和野生宿主中的疥螨进行基因特征分析。

First detection of Sarcoptes scabiei from domesticated pig (Sus scrofa) and genetic characterization of S. scabiei from pet, farm and wild hosts in Israel.

作者信息

Erster Oran, Roth Asael, Pozzi Paolo S, Bouznach Arieli, Shkap Varda

机构信息

Division of Parasitology, Kimron Veterinary Institute, 50250, Bet Dagan, Israel,

出版信息

Exp Appl Acarol. 2015 Aug;66(4):605-12. doi: 10.1007/s10493-015-9926-z. Epub 2015 May 23.

Abstract

In this report we describe for the first time the detection of Sarcoptes scabiei type suis mites on domestic pigs in Israel and examine its genetic variation compared with S. sabiei from other hosts. Microscopic examination of skin samples from S. scabiei-infested pigs (Sus scrofa domesticus) revealed all developmental stages of S. scabiei. To detect genetic differences between S. scabiei from different hosts, samples obtained from pig, rabbits (Orictolagus cuniculus), fox (Vulpes vulpes), jackal (Canis aureus) and hedgehog (Erinaceus concolor) were compared with GenBank-annotated sequences of three genetic markers. Segments from the following genes were examined: cytochrome C oxidase subunit 1 (COX1), glutathione-S-transferase 1 (GST1), and voltage-sensitive sodium channel (VSSC). COX1 analysis did not show correlation between host preference and genetic identity. However, GST1 and VSSC had a higher percentage of identical sites within S. scabiei type suis sequences, compared with samples from other hosts. Taking into account the limited numbers of GST1 and VSSC sequences available for comparison, this high similarity between sequences of geographically-distant, but host-related populations, may suggest that different host preference is at least partially correlated with genetic differences. This finding may help in future studies of the factors that drive host preferences in this parasite.

摘要

在本报告中,我们首次描述了在以色列家猪身上检测到猪疥螨,并与来自其他宿主的疥螨进行了基因变异比较。对感染猪疥螨的猪(家猪)皮肤样本进行显微镜检查,发现了猪疥螨的所有发育阶段。为了检测来自不同宿主的猪疥螨之间的基因差异,将从猪、兔(穴兔)、狐狸(赤狐)、豺(金豺)和刺猬(中东刺猬)获得的样本与GenBank注释的三种基因标记序列进行了比较。检查了以下基因的片段:细胞色素C氧化酶亚基1(COX1)、谷胱甘肽-S-转移酶1(GST1)和电压敏感钠通道(VSSC)。COX1分析未显示宿主偏好与基因同一性之间的相关性。然而,与来自其他宿主的样本相比,猪疥螨型猪的GST1和VSSC序列中相同位点的百分比更高。考虑到可用于比较的GST1和VSSC序列数量有限,这种地理上遥远但与宿主相关的种群序列之间的高度相似性可能表明,不同的宿主偏好至少部分与基因差异相关。这一发现可能有助于未来对驱动该寄生虫宿主偏好的因素的研究。

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