Oldrich Sychra

University of Veterinary and Pharmaceutical Sciences Brno, Brünn, South Moravian, Czech Republic

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Publications (25)34.28 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Two new species of the feather mite family Gabucinidae (Acari: Astigmata) are described from birds of the family Troglodytidae (Passeriformes) from Central America: Piciformobia cinnycerthiae sp. nov. from Cinnycerthia unirufa (Lafresnaye) in Ecuador, and P. henicorhinae sp. nov. from Henicorhina leucosticte (Cabanis) in Costa Rica. These are the first records of mites of the genus Piciformobia Gaud et Atyeo, 1975 from passerine hosts. A renewed diagnosis of the genus Piciformobia and key to all known species are provided.
    Acta parasitologica / Witold Stefański Institute of Parasitology, Warszawa, Poland. 10/2014; 59(4):568-79.
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    ABSTRACT: A total of 6564 individuals of 482 species of passerine birds were examined between the years 2004 and 2013 at various locations in central Europe, Africa, the Neotropical Region and Vietnam. A total of 663 birds (10.1%) of 141 species were parasitized with 3648 chewing lice of the genus Myrsidea (mean intensity was 5.5 lice per bird). Myrsidea was found as eudominant genus with a total dominance of 24.3% (a total of 15030 lice were determined). Dominance of Myrsidea ranged between 0.9% (central Europe) and 51.8% (Neotropical Region). We suggest that Myrsidea is probably less tolerant to arid conditions compared to other chewing louse genera. A total of 93 (66%, n=141) records represent new host-louse associations. We found examples of bird species harbouring two different species of Myrsidea. In these cases, each species was found either in a different geographical location or in the same location but on different host individuals. Conversely, we found also examples of one species of Myrsidea parasitizing two different host species. Such host-switching events between unrelated hosts are possible on condition that different bird species share similar behaviour and ecology. Our findings highlight the need to (1) carefully examine each louse specimen when identifying new samples of Myrsidea, (2) compare them with species of Myrsidea from the same and related host families, and (3) compare them with species of Myrsidea from unrelated hosts living in the same geographical region.
    5th International Conference on Phthiraptera (ICP5), Park Coty, Utah, USA; 08/2014
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    ABSTRACT: A total of 239 individuals of 50 bird species were examined for chewing lice (Insecta: Phthiraptera) in southern Vietnam. Fifty-six birds of 20 species were parasitised by 15 species of lice belonging to 10 genera from two suborders, Amblycera: Menacanthus, Meromenopon, Myrsidea, and Ischnocera: Alcedoecus, Brueelia, Cuculicola, Meropoecus, Penenirmus, Philopteroides and Philopterus. Thirteen louse samples from Passeriformes were identified to genus only because they contain inadequate material. A total of 29 host-louse associations were found, of which nine are new, including: (1) two new species of the genus Brueelia, which are described and named in this paper: Brueelia binhchauensis from Megalaima lineata (Vieillot, 1816) (Piciformes: Megalaimidae), and Brueelia malacocincla from Malacocincla abbotti Blyth, 1845 (Passeriformes: Pellorneidae); (2) first records of lice from Cyornis hainanus (Ogilvie-Grant, 1900); and (3) the first record of Myrsidea claytoni Hellenthal & Price, 2003 from Cymbirhynchus macrorhynchos (Gmelin, 1788) (Passeriformes: Eurylaimidae), here regarded as a case of natural host-switching. A portion of the mitochondrial cytochrome oxidase I (COI) gene for some species of chewing lice was sequenced in order to assess their genetic divergences.
    Zootaxa 01/2014; 3755(5):419-433. · 1.06 Impact Factor
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    ABSTRACT: Abstract Thirty-two black-and-red broadbill Cymbirhynchus macrorhynchos were examined for chewing lice in Vietnam. All birds examined were parasitized by Myrsidea claytoni. Mean abundance was 27.3, with intensity range 5-80 lice per bird. This is the first report of a Myrsidea from this host, although the females differ slightly from the original description of M. claytoni from Pycnonotus eutilotus in the shape of metanotum and of tergites I-II. So this is also the first record of 1 species of Myrsidea from 2 very distantly related hosts. While the original hosts of M. claytoni belong to the family Pycnonotidae, C. macrorhynchos is a member of the family Eurylaimidae representing the Old World Suboscines, which are considered as a basal lineage among passerines. Therefore, our record represents an interesting case of natural host-switching. The high prevalence as well as the intensity of infestation show that M. claytoni is well established on C. macrorhynchos in Vietnam.
    Journal of Parasitology 01/2014; · 1.32 Impact Factor
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    ABSTRACT: Hyalomma ticks are well-known vectors transmitting infectious agents, which can result in severe and potentially fatal diseases in humans. Migratory birds may carry infected ticks over long distances. Here, we report on records of ticks of the H. marginatum complex in birds from Central Europe during the spring migration in 2008–2012. A total of 1172 birds belonging to 32 species, 16 families, and 3 orders was examined for ticks. Sixteen individuals of 6 passerine species were found to transport 30 ticks, identified as individuals belonging to the H. marginatum species complex (consisting of H. isaaci, H. marginatum sensu stricto, H. rufipes, H. turanicum, and H. glabrum) during 5 spring seasons. Infested bird species included the great reed warbler Acrocephalus arundinaceus, the Eurasian reed warbler A. scirpaceus, the marsh warbler A. palustris, the sedge warbler A. schoenobaenus, Savi's warbler Locustella luscinioides, and the common nightingale Luscinia megarhynchos. All of these Central European breeders are migratory species wintering in Africa. To our knowledge, this is the first study to record ticks of the H. marginatum complex on the great reed warbler and Savi's warbler.
    Ticks and Tick-borne Diseases 01/2014; · 2.35 Impact Factor
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    ABSTRACT: South Africa has nearly 850 bird species and South Africa’s northernmost province, the Limpopo province, boasts more than 600 recorded bird species (approximately 420 breeding resident spp). Despite previous reports of a few species of lice and ticks from birds of Limpopo Province there is generally insufficient knowledge of etoparasites of birds in the province. The aim of this study is to present new data on the distribution of ectoparasites in birds occurring in Limpopo Province. A total of 700 individuals of passeriform and 150 individuals of non-passeriform bird species were sampled from the following localities: Golwe in the north-east of the province, Polokwane Nature Reserve, De Loskop near Mogwadi, Woodbush forest, the University of Limpopo, Turfloop Campus, Levubu, Happy-Rest Nature Reserve, Blouberg Nature Reserve, and Polokwane suburbs. These sites represent a range of different habitat types. Birds were captured with mist nets, checked by visual examination and the fumigation chamber method for ectoparasites. Specimens were collected between November 2011 and March 2013. Different species of hippoboscid flies (Icosta, Ornithoica), lice (Brueelia, Menacanthus, Myrsidea, Penenirmus, Philopterus, Picicola, Ricinus, Sturnidoecus…) mites and ticks (Amblyomma, Haemaphysalis, Hyalomma, Ixodes and Rhipicephalus) were recorded from various bird species. Three new species of lice has been reported so far, Myrsidea aynazae ex Phyllastrephus flavostriatus (Sharpe) (Pycnonotidae), Myrsidea eslamii ex Zoothera gurneyi (Hartlaub) (Turdidae) and Myrsidea mariquensis ex Bradornis mariquensis Smith (Muscicapidae). Also several records of new host-louse associations are: Phyllastrephus terrestris Swainson (Pycnonotidae) for Myrsidea sp., Ploceus intermedius Ruppell (Ploceidae) for Myrsidea sp., and Turdus libonyanus (Smith) (Turdidae) for Myrsidea sp.
    2013 Annual Symposium of Zoological Society of Southern Africa (ZSSA 2013); 07/2013
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    ABSTRACT: Androlaelaps fahrenholzi is a common, cosmopolitan mite constituting a species complex. This mite is found in nests or on mammal hosts and occasionally on birds. The specific host association between A. fahrenholzi-like mites and Premnoplex brunnescens in Costa Rica is reported here. Adults (females and males), deutonymphs and protonymphs were found on 14 P. brunnescens examined (prevalence was 100 %) with mean abundance 42 (2-222). The nest environment plays an important role in the evolution of parasites and could explain the evolutionary path of Laelapinae towards parasitism. We hypothesize that the colonization of P. brunnescens took place in this context quite recently, from sympatrically living rodents. Morphology and ecology of A. fahrenholzi from P. brunnescens may constitute at least a new variation of A. fahrenholzi, and possibly a new species.
    Experimental and Applied Acarology 01/2013; · 1.85 Impact Factor
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    ABSTRACT: South Africa has nearly 850 bird species and South Africa’s northernmost province, the Limpopo province, boasts with more than 600 recorded bird species (approximately 420 breeding resident spp). Despite previous reports of Myrsidea spp. from South African birds, there has not been any proper study of this louse genus, and from all the bird fauna of South Africa, only 20 (belonging to 13 families) are known to be hosts of 17 species of Myrsidea (Price et al. 2003). The aim of this study is to present new data on the distribution of this genus in South Africa, including description of three new species. A total of 145 individuals of 46 bird species (from 20 families) were captured with mist nets, checked by visual examination and the fumigation chamber method for chewing lice. Samplings were done from November 2011 to March 2012 at five study sites in the Limpopo Province. These sites were: Golwe in the north-east of the province, Polokwane Nature Reserve, De Loskop near Mogwadi, Woodbush forest and the University of Limpopo, Turfloop Campus. A total of 19 birds representing 8 species were parasitised by 8 species of Myrsidea. Three of them were recently described. The new species and their type hosts are: Myrsidea aynazae ex Phyllastrephus flavostriatus (Sharpe) (Pycnonotidae), Myrsidea eslamii ex Zoothera gurneyi (Hartlaub) (Turdidae) and Myrsidea mariquensis ex Bradornis mariquensis Smith (Muscicapidae). Records of new host-louse associations are: Phyllastrephus terrestris Swainson (Pycnonotidae) for Myrsidea sp., Ploceus intermedius Ruppell (Ploceidae) for Myrsidea sp., and Turdus libonyanus (Smith) (Turdidae) for Myrsidea sp. Following lice genera were also found on the examined birds and are currently undergoing identification to species level, e.g. Brueelia, Menacanthus, Penenirmus, Philopterus, Ricinus and Sturnidoecus.
    41st PARSA Conference; 10/2012
  • Zootaxa 08/2012; 3530:59-73. · 1.06 Impact Factor
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    ABSTRACT: A total of 144 individuals of 46 bird species belonging to the 20 families were examined for chewing lice in South Africa. Considering only the genus Myrsidea, a total of 19 birds of 8 species were parasitised with 8 species of Myrsidea. Descriptions and illustrations are given for three new species of Myrsidea. The new species and their type hosts are: Myrsidea aynazae ex Phyllastrephus flavostriatus (Sharpe) (Pycnonotidae), Myrsidea eslamii ex Zoothera gurneyi (Hartlaub) (Turdidae) and Myrsidea mariquensis ex Bradornis mariquensis Smith (Muscicapidae). Records of new host-louse associations are: Phyllastrephus terrestris Swainson (Pycnonotidae) for Myrsidea sp., Ploceus intermedius Ruppell (Ploceidae) for Myrsidea sp., and Turdus libonyanus (Smith) (Turdidae) for Myrsidea sp.
    Zootaxa 08/2012; · 1.06 Impact Factor
  • Zootaxa 06/2012; 3357:37-48. · 1.06 Impact Factor
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    Saima Naz, Oldrich Sychra, Syed Anser Rizvi
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    ABSTRACT: The chewing lice (Phthiraptera) of Columbidae (Columbiformes) from Pakistan are studied. Six species of chewing lice with new host records are recorded and one new species of the genus Colpocephalum is described from Columba livia in the Karachi region. All the columbid chewing lice from Pakistan are keyed out and the new species is illustrated and compared with the closest allied species.
    ZooKeys 01/2012; · 0.92 Impact Factor
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    ABSTRACT: The chewing lice of the genus Philopterus parasitic on drongos (Dicruridae) are reviewed. Both sexes of the two species previously known from dicrurid hosts—P. trabecula (Piaget, 1880) and P. kalkalichi Ansari, 1955—are redescribed and illustrated. A new species, Philopterus petrescuae Adam is described from Dicrurus hottentottus from Indonesia. A lectotype for P. trabecula is designated. A record of Philopterus crassipes (Burmeister, 1838) from Dicrurus remifer (Temminck) is discussed and considered to be the result of straggling or contamination.
    Zootaxa 05/2011; 2868:51-61. · 1.06 Impact Factor
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    ABSTRACT: A description and illustrations are given for Myrsidea povedai n. sp. from the black-and-yellow silky-flycatcher Phainoptila melanoxantha. The female of M. povedai is distinguished from those of other species of Myrsidea from Costa Rican passerine hosts by a unique combination of the following characteristics: (1) well-developed hypopharynx, (2) well-defined median gap in the rows of tergal setae and another gap between groups of setae on lateral side of tergites II-VII and the most central seta, and (3) enlarged metanotum with at least 23 setae. These characters place M. povedai close to Myrsidea campestris from Euneornis campestris and Myrsidea marini from Pezopetes capitalis (both from the Emberizidae). The female of M. povedai can be easily separeted from both aforementioned species by the abdomen without conspicuously enlarged tergites. Moreover, the male of M. povedai is characterized by a unique male genital sclerite, which is quite long (0.13-0.15), tapered apically, with a long median line, and without subapical processes. This is the first record of a chewing louse from this host and the first record of Myrsidea from the passerine family Bombycillidae. All 7 birds examined in Costa Rica in 2010 were parasitized with M. povedai. Mean abundance was 11.6, with intensity range 4-27 lice per bird.
    Journal of Parasitology 02/2011; 97(4):593-5. · 1.32 Impact Factor
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    ABSTRACT: Ixodes ricinus ticks collected from 835 birds and from vegetation in the Czech Republic were analyzed. Host-seeking ticks (n = 427) were infected predominantly by Borrelia afzelii (25%). Ticks (n = 1,012) from songbirds (Passeriformes) were infected commonly by Borrelia garinii (12.1%) and Borrelia valaisiana (13.4%). Juveniles of synanthropic birds, Eurasian blackbirds (Turdus merula) and song thrushes (Turdus philomelos), were major reservoir hosts of B. garinii.
    Applied and Environmental Microbiology 02/2011; 77(3):1115-7. · 3.95 Impact Factor
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    ABSTRACT: One hundred and seventy individuals of five species of manakins (Passeriformes: Pipridae) were examined for chewing lice (Phthiraptera) in Costa Rica. Six species of chewing lice were identified. Chewing lice or their eggs were found on 26% individuals (28 positive/109 examined) of Long-tailed Manakins (Chiroxiphia linearis), the most numerous manakin species examined. There were significant differences in prevalences and intensities of infestation between males and females. No lice were found on females (n = 28) compared to 35% (24 positive/69 examined) prevalence in males. In older males, the higher prevalence and mean intensity of infestation was found. Description and illustrations are given for a new species of the genus Tyranniphilopterus Mey, 2004 from Long-tailed Manakin-Tyranniphilopterus toledo Sychra, sp. n. Both sexes of Tyranniphilopterus bruneri (Carriker, 1903) are redescribed. New host records are Long-tailed Manakin and White-collared Manakin (Manacus candei) for Ricinus invadens; White-ruffed Manakin (Corapipo altera) for Ricinus pessimalis; Long-tailed Manakin for Myrsidea andyolsoni. These are the first louse records from Long-tailed Manakin.
    Parasitology Research 02/2010; 106(4):925-31. · 2.85 Impact Factor
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    ABSTRACT: Borrelia spirochetes in bird-feeding ticks were studied in the Czech Republic. During the postbreeding period (July to September 2005), 1,080 passerine birds infested by 2,240 Ixodes ricinus subadult ticks were examined. Borrelia garinii was detected in 22.2% of the ticks, Borrelia valaisiana was detected in 12.8% of the ticks, Borrelia afzelii was detected in 1.6% of the ticks, and Borrelia burgdorferi sensu stricto was detected in 0.3% of the ticks. After analysis of infections in which the blood meal volume and the stage of the ticks were considered, we concluded that Eurasian blackbirds (Turdus merula), song thrushes (Turdus philomelos), and great tits (Parus major) are capable of transmitting B. garinii; that juvenile blackbirds and song thrushes are prominent reservoirs for B. garinii spirochetes; that some other passerine birds investigated play minor roles in transmitting B. garinii; and that the presence B. afzelii in ticks results from infection in a former stage. Thus, while B. garinii transmission is associated with only a few passerine bird species, these birds have the potential to distribute millions of Lyme disease spirochetes between urban areas.
    Applied and Environmental Microbiology 01/2009; 75(3):596-602. · 3.95 Impact Factor
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    Oldrich Sychra, Ivan Literak, Miroslav Capek
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    ABSTRACT: This paper presents the first record of three chewing lice species of the genus Myrsidea collected from one emberizid and two thraupid hosts in Mato Grosso do Sul, Brazil. Morphological characters of M. seminuda are added for the last redescription of this species and a new key to males of 'bonariensis species group' is presented.
    Neotropical Entomology 01/2009; 38(4):501-3. · 0.68 Impact Factor
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    ABSTRACT: A new species of chewing louse, Myrsidea agarwali, is described from Garrulax lineatus lineatus (Passeriformes: Timaliidae) from the Rampur district (India). A key is provided for the identification of males and females of Myrsidea from birds of the genus Garrulax.
    Biologia 01/2009; 64(4):745-747. · 0.51 Impact Factor
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    ABSTRACT: Chigger mites were collected from 1,080 wild birds of 37 species at Certak (Czech Republic), in the western Carpathian Mountains, from 29 July to 24 September 2005. The prevalence of infestation with chigger larvae was 7%. A total of 325 chigger specimens from 10 bird species was identified and three chigger species were found: Neotrombicula autumnalis, N. carpathica, and N. inopinata, the latter two species being reported on new hosts. Neotrombicula carpathica is reported in the Czech Republic for the first time. A total of 509 chigger larvae found on 79 host specimens were examined by polymerase chain reaction (PCR) for the presence of Borrelia burgdorferi s.l. DNA (fragments of the rrf (5S)--rrl (23S) intergenic spacer), and Anaplasma phagocytophilum DNA (epank1 gene). A fragment of specific Borrelia DNA was amplified through PCR in one sample, and the PCR product was further analyzed by reverse line blotting assay, whereby both genospecies of B. garinii and B. valaisiana were proved. This sample pooled five chigger larvae collected from one Sylvia atricapilla on 11 August 2005. No A. phagocytophilum DNA was amplified. We conclude that larvae of the genus Neotrombicula can be infected with Borrelia genospecies originated from their present or former hosts.
    Experimental and Applied Acarology 05/2008; 44(4):307-314. · 1.85 Impact Factor

Publication Stats

67 Citations
34.28 Total Impact Points

Institutions

  • 2007–2014
    • University of Veterinary and Pharmaceutical Sciences Brno
      • Department of Biology and Wildlife Diseases
      Brünn, South Moravian, Czech Republic
  • 2013
    • Centro de Estudios Parasitologicos y de Vectores CEPAVE
      Eva Perón, Buenos Aires, Argentina
  • 2009–2011
    • Slovak Academy of Sciences
      • Institute of Virology
      Presburg, Bratislavský, Slovakia