Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus
Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Hornok, Sándor [verfasserIn] |
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E-Artikel |
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| Sprache: |
Englisch |
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2023 |
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| Anmerkung: |
© The Author(s) 2023 |
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| Übergeordnetes Werk: |
Enthalten in: Parasites & vectors - London : BioMed Central, 2008, 16(2023), 1 vom: 16. März |
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| Übergeordnetes Werk: |
volume:16 ; year:2023 ; number:1 ; day:16 ; month:03 |
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| DOI / URN: |
10.1186/s13071-023-05718-z |
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| Katalog-ID: |
SPR049715046 |
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| 100 | 1 | |a Hornok, Sándor |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus |
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| 520 | |a Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract | ||
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10.1186/s13071-023-05718-z doi (DE-627)SPR049715046 (SPR)s13071-023-05718-z-e DE-627 ger DE-627 rakwb eng Hornok, Sándor verfasserin aut Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract Carnivores (dpeaa)DE-He213 Mustelidae (dpeaa)DE-He213 cox1 (dpeaa)DE-He213 16S rRNA gene (dpeaa)DE-He213 18S rRNA gene (dpeaa)DE-He213 28S rRNA gene (dpeaa)DE-He213 Mihalca, Andrei D. aut Kontschán, Jenő aut Takács, Nóra aut Fedorov, Denis aut Plantard, Olivier aut Sándor, Attila D. aut Enthalten in Parasites & vectors London : BioMed Central, 2008 16(2023), 1 vom: 16. März (DE-627)558690076 (DE-600)2409480-8 1756-3305 nnns volume:16 year:2023 number:1 day:16 month:03 https://dx.doi.org/10.1186/s13071-023-05718-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 16 2023 1 16 03 |
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10.1186/s13071-023-05718-z doi (DE-627)SPR049715046 (SPR)s13071-023-05718-z-e DE-627 ger DE-627 rakwb eng Hornok, Sándor verfasserin aut Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract Carnivores (dpeaa)DE-He213 Mustelidae (dpeaa)DE-He213 cox1 (dpeaa)DE-He213 16S rRNA gene (dpeaa)DE-He213 18S rRNA gene (dpeaa)DE-He213 28S rRNA gene (dpeaa)DE-He213 Mihalca, Andrei D. aut Kontschán, Jenő aut Takács, Nóra aut Fedorov, Denis aut Plantard, Olivier aut Sándor, Attila D. aut Enthalten in Parasites & vectors London : BioMed Central, 2008 16(2023), 1 vom: 16. März (DE-627)558690076 (DE-600)2409480-8 1756-3305 nnns volume:16 year:2023 number:1 day:16 month:03 https://dx.doi.org/10.1186/s13071-023-05718-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 16 2023 1 16 03 |
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10.1186/s13071-023-05718-z doi (DE-627)SPR049715046 (SPR)s13071-023-05718-z-e DE-627 ger DE-627 rakwb eng Hornok, Sándor verfasserin aut Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract Carnivores (dpeaa)DE-He213 Mustelidae (dpeaa)DE-He213 cox1 (dpeaa)DE-He213 16S rRNA gene (dpeaa)DE-He213 18S rRNA gene (dpeaa)DE-He213 28S rRNA gene (dpeaa)DE-He213 Mihalca, Andrei D. aut Kontschán, Jenő aut Takács, Nóra aut Fedorov, Denis aut Plantard, Olivier aut Sándor, Attila D. aut Enthalten in Parasites & vectors London : BioMed Central, 2008 16(2023), 1 vom: 16. März (DE-627)558690076 (DE-600)2409480-8 1756-3305 nnns volume:16 year:2023 number:1 day:16 month:03 https://dx.doi.org/10.1186/s13071-023-05718-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 16 2023 1 16 03 |
| allfieldsGer |
10.1186/s13071-023-05718-z doi (DE-627)SPR049715046 (SPR)s13071-023-05718-z-e DE-627 ger DE-627 rakwb eng Hornok, Sándor verfasserin aut Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract Carnivores (dpeaa)DE-He213 Mustelidae (dpeaa)DE-He213 cox1 (dpeaa)DE-He213 16S rRNA gene (dpeaa)DE-He213 18S rRNA gene (dpeaa)DE-He213 28S rRNA gene (dpeaa)DE-He213 Mihalca, Andrei D. aut Kontschán, Jenő aut Takács, Nóra aut Fedorov, Denis aut Plantard, Olivier aut Sándor, Attila D. aut Enthalten in Parasites & vectors London : BioMed Central, 2008 16(2023), 1 vom: 16. März (DE-627)558690076 (DE-600)2409480-8 1756-3305 nnns volume:16 year:2023 number:1 day:16 month:03 https://dx.doi.org/10.1186/s13071-023-05718-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 16 2023 1 16 03 |
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10.1186/s13071-023-05718-z doi (DE-627)SPR049715046 (SPR)s13071-023-05718-z-e DE-627 ger DE-627 rakwb eng Hornok, Sándor verfasserin aut Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2023 Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract Carnivores (dpeaa)DE-He213 Mustelidae (dpeaa)DE-He213 cox1 (dpeaa)DE-He213 16S rRNA gene (dpeaa)DE-He213 18S rRNA gene (dpeaa)DE-He213 28S rRNA gene (dpeaa)DE-He213 Mihalca, Andrei D. aut Kontschán, Jenő aut Takács, Nóra aut Fedorov, Denis aut Plantard, Olivier aut Sándor, Attila D. aut Enthalten in Parasites & vectors London : BioMed Central, 2008 16(2023), 1 vom: 16. März (DE-627)558690076 (DE-600)2409480-8 1756-3305 nnns volume:16 year:2023 number:1 day:16 month:03 https://dx.doi.org/10.1186/s13071-023-05718-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 16 2023 1 16 03 |
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phylogenetic analyses of ixodes rugicollis with notes on its morphology in comparison with ixodes cornutus |
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Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus |
| abstract |
Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract © The Author(s) 2023 |
| abstractGer |
Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract © The Author(s) 2023 |
| abstract_unstemmed |
Background The subgenus Pholeoixodes contains Ixodes species typically associated with birds that nest in cavities or with carnivorous mammals that are burrow-dwelling. Among ticks infesting the latter, Ixodes rugicollis is regarded as the rarest species in the western Palearctic. Despite the unique morphology of this species, its identification (especially of subadult stages) is difficult, and molecular-phylogenetic data to offer other diagnostic methods and a better understanding of its taxonomy are not available. Methods In this study, a female and a male of I. rugicollis were collected in Romania. The female was compared morphologically to another female of this species collected in France and to the lectotype of Ixodes cornutus (from Tajikistan), which has similar morphology and host association. Following DNA extraction, two mitochondrial (cytochrome c oxidase subunit I: cox1 and the 16S rRNA gene) and two nuclear genetic markers (18S and 28S rRNA genes) of I. rugicollis were amplified and analyzed in a phylogenetic context. Results Females of I. rugicollis and I. cornutus differed in the shape of their palps, scutum and areae porosae and the size of peritremes, but they were similar in palpal setal length, dental formula and arrangement of anal setae. Measurements of two I. rugicollis females examined were not less different from each other than from I. cornutus. Phylogenetically, I. rugicollis clustered with other members of its subgenus. The topology of all trees showed the position of bat-associated tick species of the subgenus Eschatocephalus among Pholeoixodes species. Conclusions For the first time to our knowledge, this study provides high-resolution digital pictures of male and female I. rugicollis as well as corresponding molecular data. Morphological comparison of this species with I. cornutus could not resolve uncertainties in the validity of the latter species, which can only be accomplished after collecting new specimens of I. cornutus and consequent molecular comparisons. This study includes the first comprehensive molecular-phylogenetic analysis of western Palearctic Pholeoixodes species based on both nuclear and mitochondrial genetic markers and including I. rugicollis. The results of these confirm the phylogenetic position of subgenus Eschatocephalus within Pholeoixodes, justifying the need to merge them to comply with the taxonomic criterion of monophyly. Graphical Abstract © The Author(s) 2023 |
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Phylogenetic analyses of Ixodes rugicollis with notes on its morphology in comparison with Ixodes cornutus |
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Mihalca, Andrei D. Kontschán, Jenő Takács, Nóra Fedorov, Denis Plantard, Olivier Sándor, Attila D. |
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