title: Preliminary molecular characterizations of Sarcoptes scaibiei (Acari: Sarcoptidae) from farm animals in Egypt.
abstract: Little is known about the genetic diversity of Sarcoptes scabiei mites in farm animals in Egypt. In this study, we characterized S. scabiei in 25 skin scrapes from water buffalo, cattle, sheep, and rabbits at the nuclear marker ITS2 and mitochondrial markers COX1 and 16S rRNA. Sequences of the ITS2 showed no host segregation or geographical isolation, whereas those of the mitochondrial COX1 and 16S rRNA genes indicated the presence of both host-adapted and geographically segregated populations of S. scabiei. Host adaptation may limit inter-species transmission of. S. scabiei, thus restrict gene flow among S. scabiei from different hosts. This is the first report on the molecular characterization of sarcoptic mites in Egypt. Further genetic studies involving larger numbers of specimens, especially those from humans and companion animals, are needed to understand the molecular epidemiology of sarcoptic mange in Egypt.
authors.affiliation: Division of Foodborne, Waterborne and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America; Department of Zoology, Kafr El Sheikh University, Kafr El Sheikh, Egypt.
authors.forename: Said
authors.initials: S
authors.lastname: Amer
authors.affiliation: Animal Health Research Institute, Kafr El Sheikh Provincial Laboratory, Kafr El Sheikh, Egypt.
authors.forename: Taher Abd
authors.initials: TA
authors.lastname: El Wahab
authors.affiliation: Animal Health Research Institute, Kafr El Sheikh Provincial Laboratory, Kafr El Sheikh, Egypt.
authors.forename: Abd El Naby
authors.initials: Ael N
authors.lastname: Metwaly
authors.affiliation: Division of Foodborne, Waterborne and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America; State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, People's Republic of China.
authors.forename: Jianbin
authors.initials: J
authors.lastname: Ye
authors.affiliation: Division of Foodborne, Waterborne and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
authors.forename: Dawn
authors.initials: D
authors.lastname: Roellig
authors.affiliation: State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, People's Republic of China.
authors.forename: Yaoyu
authors.initials: Y
authors.lastname: Feng
authors.affiliation: Division of Foodborne, Waterborne and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
authors.forename: Lihua
authors.initials: L
authors.lastname: Xiao
mesh_terms: D000818:Animals; D000829:Animals, Domestic / Q000469:parasitology*; D016000:Cluster Analysis; D019295:Computational Biology; D021901:DNA, Intergenic; D004272:DNA, Mitochondrial; D030561:Databases, Nucleic Acid; D004534:Egypt; D008969:Molecular Sequence Data; D012336:RNA, Ribosomal, 16S; D040021:Sarcoptidae / Q000145:classification* / Q000235:genetics*
chemical_list: D021901:DNA, Intergenic; D004272:DNA, Mitochondrial; D012336:RNA, Ribosomal, 16S
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