title: A widespread distribution for Arostrilepis tenuicirrosa (Eucestoda: Hymenolepididae) in Myodes voles (Cricetidae: Arvicolinae) from the Palearctic based on molecular and morphological evidence: historical and biogeographic implications.
abstract: Hymenolepidid cestodes in Myodes glareolus from Lithuania and additional specimens originally attributed to Arostrilepis horrida from the Republic of Belarus are now referred to A. tenuicirrosa. Our study includes the first records of A. tenuicirrosa from the European (western) region of the Palearctic, and contributes to the recognition of A. horrida (sensu lato) as a complex of cryptic species distributed broadly across the Holarctic. Specimens of A. tenuicirrosa from Lithuania were compared to cestodes representing apparently disjunct populations in the eastern Palearctic based on structural characters of adult parasites and molecular sequence data from nuclear (ITS2) and mitochondrial (cytochrome b) genes. Morphological and molecular data revealed low levels of divergence between eastern and western populations. Phylogeographic relationships among populations and host biogeographic history suggests that limited intraspecific diversity within A. tenuicirrosa may reflect a Late Pleistocene transcontinental range expansion from an East Asian point of origin.
authors: Department of Biology, Northern Michigan University, 1401 Presque Isle Ave., Marquette, Michigan, 49855, USA, kgalbrea@nmu.edu.
authors: Kurt E
authors: KE
authors: Galbreath
authors: Kristina
authors: K
authors: Ragaliauskaite
authors: Leonas
authors: L
authors: Kontrimavichus
authors: Arseny A
authors: AA
authors: Makarikov
authors: Eric P
authors: EP
authors: Hoberg
mesh_terms: D000818:Animals; D003411:Arvicolinae / Q000469:parasitology*; D002589:Cestoda / Q000033:anatomy & histology / Q000235:genetics / Q000302:isolation & purification*; D002590:Cestode Infections / Q000469:parasitology / Q000662:veterinary*; D016000:Cluster Analysis; D045303:Cytochromes b / Q000235:genetics; D004272:DNA, Mitochondrial / Q000737:chemistry / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000737:chemistry / Q000235:genetics; D008097:Lithuania; D008853:Microscopy; D008969:Molecular Sequence Data; D058974:Phylogeography; D002094:Republic of Belarus; D017422:Sequence Analysis, DNA
chemical_list: D004272:DNA, Mitochondrial; D021903:DNA, Ribosomal Spacer; D045303:Cytochromes b