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Molecular data confirm the taxonomic position of Hymenolepis erinacei (Cyclophyllidea: Hymenolepididae) and host switching, with notes on cestodes of Palaearctic hedgehogs (Erinaceidae)
Published online by Cambridge University Press: 01 February 2018
Abstract
The cestode Hymenolepis erinacei is regarded as a widely distributed parasite in European hedgehogs of the genus Erinaceus, although the taxonomic position of this hymenolepidid has been debated for a considerable period of time. We present the first molecular data for this cestode, including partial DNA sequences of mitochondrial 16S and nuclear 28S ribosomal genes. Molecular phylogenetic analysis clusters H. erinacei in one clade together with representatives of the genus Hymenolepis from rodents. Characteristic morphological features, including the oval embryophore without filaments and shape of the embryonic hooks of H. erinacei are described. Features of these cestode eggs are proposed as a basis for non-invasive detection of parasitic infections in small mammal populations. The present study explores phylogenetic relationships within the genus Hymenolepis and the host switching related to H. erinacei. Cases of host switching in other genera of the family Hymenolepididae are reviewed. A short critical review of cestodes parasitizing hedgehogs in the Palaearctic is presented.
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