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2 results on '"Hornok, Sandor"'

1. Phylogenies from mitochondrial genomes of 120 species of ticks: Insights into the evolution of the families of ticks and of the genus Amblyomma.

Author

Kelava S, Mans BJ, Shao R, Moustafa MAM, Matsuno K, Takano A, Kawabata H, Sato K, Fujita H, Ze C, Plantard O, Hornok S, Gao S, Barker D, Barker SC, and Nakao R

Subjects
Animals, Amblyomma genetics, Argasidae classification, Biological Evolution, Genome, Mitochondrial, Ixodidae classification, Phylogeny
Abstract

The evolution and phylogenetic relationships of the ticks at both the family and genus levels are contested. The genus Amblyomma and its subgenera are in a state of flux; moreover, the relationships among the three tick families are controversial due to conflicting phylogenetic support for different arrangements of the three families of living ticks. With 18 newly sequenced mitochondrial (mt) genomes of ticks included, we executed the largest mt genome phylogenetic study of ticks so far. Phylogenetic trees were inferred from one sea spider mt genome, one horseshoe crab, five mite mt genomes and 146 tick mt genomes from 120 species: 153 mt genomes in total. Sixteen phylogenetic trees were inferred from 10 datasets using both maximum likelihood and Bayesian inference methods. We describe the first novel mt gene-arrangement for the metastriate Ixodidae in Amblyomma (Africaniella) transversale. Also, three unusual partial 16S rRNA gene inserts were found in the mt genome of Haemaphysalis (Alloceraea) kitaokai: we consider the possible role of past genome translocation events in the formation of these inserts. Our phylogenies revealed evidence that: (i) the genus Amblyomma is polyphyletic with respect to Amblyomma (Africaniella) transversale; (ii) the subgenus Aponomma is apparently embedded in the genus Amblyomma; (iii) Haemaphysalis (Segalia) parva and Haemaphysalis (Alloceraea) kitaokai form a clade to the exclusion of other Haemaphysalis species; and (iv) the phylogenetic position of the family Nuttalliellidae is unstable among phylogenies from different datasets., (Copyright © 2020. Published by Elsevier GmbH.)

Published
2021
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2. Contributions to the phylogeny of Ixodes (Pholeoixodes) canisuga, I. (Ph.) kaiseri, I. (Ph.) hexagonus and a simple pictorial key for the identification of their females

Author

Richard Wall, Agustín Estrada-Peña, Relja Beck, Nóra Takács, Snežana Tomanović, Sándor Hornok, Elisabeth Meyer-Kayser, Jenő Kontschán, Adnan Hodžić, Gábor Földvári, Cornelia Silaghi, Lorenza Beati, Olivier Plantard, Attila D. Sándor, Georg Gerhard Duscher, Róbert Farkas, Swaid Abdullah, Department of Parasitology and Zoology, University of Veterinary Medicine, Croatian Veterinary Institute, Univerity Southern Georgia, Partenaires INRAE, Hungarian Academy of Sciences (MTA), Universität Zürich [Zürich] = University of Zurich (UZH), Lower Saxony State Office for Consumer Protection and Food Safety, University of Veterinary Medicine [Vienna] (Vetmeduni), University of Belgrade, University of Bristol [Bristol], Department of Animal Health, Faculty of Veterinary Medicine, Biologie, Epidémiologie et analyse de risque en Santé Animale (BIOEPAR), Institut National de la Recherche Agronomique (INRA), University of Zurich, Hornok, Sándor, and Hornok, Sandor

Subjects
10078 Institute of Parasitology, 0301 basic medicine, Entomology, [SDV]Life Sciences [q-bio], Carnivora, 030231 tropical medicine, 2405 Parasitology, Foxes, Identification key, Zoology, 610 Medicine & health, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, Monophyly, Dogs, 0302 clinical medicine, Species Specificity, Phylogenetics, 600 Technology, RNA, Ribosomal, 16S, parasitic diseases, Mustelidae, Animals, lcsh:RC109-216, Phylogeny, Ixodes crenulatus, Ixodes, biology, Phylogenetic tree, Research, Erinaceidae, Ixodes rugicollis, 2725 Infectious Diseases, Sequence Analysis, DNA, biology.organism_classification, Europe, Carnivora, Erinaceidae, Ixodes crenulatus, Ixodes rugicollis, Genes, Mitochondrial, 030104 developmental biology, Infectious Diseases, 570 Life sciences, Female, Parasitology, Subgenus, Ixodidae
Abstract

International audience; Background: In Europe, hard ticks of the subgenus Pholeoixodes (Ixodidae: Ixodes) are usually associated with burrow-dwelling mammals and terrestrial birds. Reports of Pholeoixodes spp. from carnivores are frequently contradictory, and their identification is not based on key diagnostic characters. Therefore, the aims of the present study were to identify ticks collected from dogs, foxes and badgers in several European countries, and to reassess their systematic status with molecular analyses using two mitochondrial markers. Results: Between 2003 and 2017, 144 Pholeoixodes spp. ticks were collected in nine European countries. From accurate descriptions and comparison with type-materials, a simple illustrated identification key was compiled for adult females, by focusing on the shape of the anterior surface of basis capituli. Based on this key, 71 female ticks were identified as I. canisuga, 21 as I. kaiseri and 21 as I. hexagonus. DNA was extracted from these 113 female ticks, and from further 31 specimens. Fragments of two mitochondrial genes, cox1 (cytochrome c oxidase subunit 1) and 16S rRNA, were amplified and sequenced. Ixodes kaiseri had nine unique cox1 haplotypes, which showed 99.2-100% sequence identity, whereas I. canisuga and I. hexagonus had eleven and five cox1 haplotypes, respectively, with 99.5-100% sequence identity. The distribution of cox1 haplotypes reflected a geographical pattern. Pholeoixodes spp. ticks had fewer 16S rRNA haplotypes, with a lower degree of intraspecific divergence (99.5-100% sequence identity) and no geographical clustering. Phylogenetic analyses were in agreement with morphology: I. kaiseri and I. hexagonus (with the similar shape of the anterior surface of basis capituli) were genetically more closely related to each other than to I. canisuga. Phylogenetic analyses also showed that the subgenus Eschatocephalus (bat ticks) clustered within the subgenus Pholeoixodes. Conclusions: A simple, illustrated identification key is provided for female Pholeoixodes ticks of carnivores (including I. hexagonus and I. rugicollis) to prevent future misidentification of these species. It is also shown that I. kaiseri is more widespread in Europe than previously thought. Phylogenetic analyses suggest that the subgenus Pholeoixodes is not monophyletic: either the subgenus Eschatocephalus should be included in Pholeoixodes, or the latter subgenus should be divided, which is a task for future studies.

Published
2017

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