Phylogenetic relationships of the genus Armadolepis Spassky, 1954 (Eucestoda, Hymenolepididae), with descriptions of two new species from Palaearctic dormice (Rodentia, Gliridae)

Abstract

Two new species of hymenolepidid cestodes belonging to the genus Armadolepis Spassky, 1954 are described from dormice (Gliridae) from the southern East European Plain and the northwestern Caucasus, Russia. Armadolepis (Bremserilepis) longisoma n. sp., with a rudimentary, unarmed rostellar apparatus is described from the fat dormouse Glis glis (Linnaeus) from the Republic of Adygeya, Russia. Additionally, A. (Armadolepis) dryomi n. sp., characterised by a well-developed rostellar apparatus and armed rhynchus is described from the forest dormouse Dryomys nitedula Pallas from Rostov Oblast', Russia. Armadolepis (Bremserilepis) longisoma n. sp. differs from A. (Bremserilepis) myoxi (Rudolphi, 1819) in having a substantially longer strobila and cirrus-sac, wider scolex and ovary and larger rostellar pouch and testes. Armadolepis (Armadolepis) dryomi n. sp. is distinguishable from A. (Armadolepis) spasskii Tenora & Baruš, 1958, A. (Armadolepis) jeanbaeri Makarikov, 2017 and A. (Armadolepis) tenorai Makarikov, 2017 in having a substantially longer and wider strobila, and larger rostellar pouch and cirrus-sac. Furthermore, A. dryomi n. sp. can be distinguished from its congeners by the number and size of rostellar hooks and the arrangement of the testes. Phylogenetic affinities of Armadolepis were studied for the first time using partial sequences of the nuclear ribosomal 28S DNA gene. Phylogenetic analysis strongly supported the status of Armadolepis as a separate genus belonging to the "Rodentolepis clade".

Parasites, Bacteria and Viruses of the Edible Dormouse Glis glis (Rodentia: Gliridae) in the Western Palaearctic

“…Seven species (the trematodes Lyperosomum armenicum (Stcherbakova, 1942), Lecithodendrium semen (Kirschenblatt, 1941), the cestodes Armadolepis myoxi (Rudolphi, 1819), Armadolepis longisoma (Makarikov, Stakheev and Tkach, 2018), Armadolepis genovi Makarikov and Georgiev, 2020, Armadolepis sp. and the nematode Paraheligmonina gracilis (Leuckart, 1842)) are host-specific parasites of the edible dormouse.…”

“…Recent parasite taxonomy is given according to the Fauna Europaea Database (https://faunaeu.org/, (accessed on 18 February 2022)) [57], Global Cestode Database (http://tapewormdb. uconn.edu (accessed on 12 February 2022)) [58] and articles of Makarikov with co-authors [59][60][61].…”

Phylogeny of hymenolepidids (Cestoda: Cyclophyllidea) from mammals: sequences of 18S rRNA and COI genes confirm major clades revealed by the 28S rRNA analyses

“…The pioneer study by Haukisalmi et al (2010) proposed the first phylogenetic hypothesis for the relationships among mammalian hymenolepidids, which was based on sequencing partial (D1-D3) 28S ribosomal RNA (rRNA) gene; it revealed the presence of four major phyletic lineages in the group, which were named 'Ditestolepis clade', 'Arostrilepis clade', 'Hymenolepis clade' and 'Rodentolepis clade'. Subsequently, Neov et al (2019) analysed the phylogenetic relationships of this group based on partial (D1-D3) 28S rRNA gene of 12 selected taxa as well as sequences obtained by Haukisalmi et al (2010) and other authors (Greiman & Tkach, 2012;Greiman et al, 2013;Tkach et al, 2013Tkach et al, , 2018Binkienė et al, 2015Binkienė et al, , 2019Makarikov et al, 2015Makarikov et al, , 2018, comprising a total of 40 taxa. This study confirmed the same major clades but also added more details on the evolution of the host-parasite associations and the main morphological characteristics of the members of this group.…”

“…Among cyclophyllidean cestodes, Hymenolepididae Perrier, 1897 is the most species-rich family comprising more than 920 species parasitic in birds and mammals (Mariaux et al ., 2017). The number of species from mammalian hosts exceeds 366 (Mariaux et al ., 2017; Makarikov et al ., 2018, 2020; Makarikova, 2018; Tkach et al ., 2018; Gardner et al ., 2020; Makarikov & Georgiev, 2020). These are parasitizing mostly insectivores (Eulipotyphla), rodents (Rodentia) and bats (Chiroptera) (Vaucher, 1971; Czaplinski & Vaucher, 1994; Georgiev et al ., 2006; Mariaux et al ., 2017).…”

“…(2019) analysed the phylogenetic relationships of this group based on partial (D1–D3) 28S rRNA gene of 12 selected taxa as well as sequences obtained by Haukisalmi et al . (2010) and other authors (Greiman & Tkach, 2012; Greiman et al ., 2013; Tkach et al ., 2013, 2018; Binkienė et al ., 2015, 2019; Makarikov et al ., 2015, 2018), comprising a total of 40 taxa. This study confirmed the same major clades but also added more details on the evolution of the host–parasite associations and the main morphological characteristics of the members of this group.…”