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Taxonomic status of Cyathostoma nematodes (Nematoda: Syngaminae) parasitizing respiratory tracts of birds of prey and owls in Europe and North America: how many species are there?

G. Kanarek
G. Kanarek
, 
G. Zaleśny
G. Zaleśny
, 
J. Sitko
J. Sitko
 und 
A. I. Blanco
A. I. Blanco
   | 10. März 2016
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Article Category: Research Article
Online veröffentlicht: 10. März 2016
Seitenbereich: 47 - 54
Eingereicht: 14. Mai 2015
Akzeptiert: 30. Sept. 2015
DOI: https://doi.org/10.1515/helmin-2015-0066
Schlüsselwörter
© 2016 Institute of Parasitology, SAS, Košice
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1.

Phylogenetic analysis of ITS1 and ITS2 sequences performed using Maximum Likelihood method, after fitting the best model (Tamura 3-parameter); bootstrap support calculated on basis of 500 replicates
Phylogenetic analysis of ITS1 and ITS2 sequences performed using Maximum Likelihood method, after fitting the best model (Tamura 3-parameter); bootstrap support calculated on basis of 500 replicates

Comparison of selected biometrical and morphological characteristics of C.(Hovorkonema) bronchialis (Mühling, 1884); all measurements in millimeters

AuthorChapin (1925)Griffiths et al. (1954)Ryžikov and Zavadil (1958)Hernandez-Rodriguez et al. (1978)
CountryUSA, North AmericaUSA, North AmericaUkraina, EuropeEspania, Europe
Hostdomestic geese, swansdomestic geeseAnser anser dom. Anser anser
Number of teeth?6 – 77?
Head collarabsentabsentweakly differentiated?
Male: Body length4 – 5.89.5 – 109.5 – 10.710 – 12
Body width0.25 – 0.3280.32 – 0.330.367 – 0.402
Oesophagus length0.350.560 – 0.5700.630 – 0.690
Buccal capsule (width x depth)0.09 – 0.13 x 0.140.145 – 0.15 x 0.109 – 0.1320.117 – 0.123 x 0.091 – 0.105
Spicules length0.51 – 0.620.54 – 0.700.58 – 0.720.56 – 0.70
Gubernaculum??present, 0.08 long?
Female: Body length16 – 3116 – 2625 – 4022 – 28
Body width0.7 – 0.90.75 – 0.860.62 – 0.830.376 – 0.779
Oesophagus length1.0 – 1.141.12 – 1.151.210 – 1.350
Buccal capsule (width x depth)0.325 x 0.2050.33 – 0.42 x 0.3250.41 – 0.56 x 0.304 – 0.3680.262 – 0.297 x 0.290 – 0.320
Vulvar distance from anterior end“…vulva just in front to the anterior end…”“…posterior part of the anterior third of the body…”12 – 14.5 mm from anterior endin first 1/3 length of the body
Tail length0.16 – 0.300.0750.272 – 0.3360.230 – 0.263
Eggs0.074 – 0.083 x 0.049 – 0.0620.068 – 0.085 x 0.043 – 0.0580.073 – 0.083 x 0.052 – 0.0560.082 – 0.086 x 0.059 – 0.065

Comparison of selected biometrical and morphological characteristics of species of C.(Hovorkonema) nematodes recorded in birds of prey: all measurements in millimeters

Species nameC. (Hovorkonema) americanaC. (Hovorkonema) brodskiiC. (Hovorkonema) variegatum
AuthorChapin (1925)Borgsteede and Okulewicz (2001)Sultanov (1946)Vogel (1928)Okulewicz (1984)Hartwich (1994)Krone et al. 2007
CountryUSA, North AmericaHolland, EuropeTajikistan, AsiaGermany, EuropePoland, EuropeGermany, EuropeGermany, Europe
HostButeo borealisAccipiter gentilis, Buteo buteo, B. lagopusCircus aeruginosusGrus sp., Balearica pavoninaCiconia ciconiaAnseriformes, Ciconiiformes GruiformesAccipiter gentilis, A. nisus, B. buteo, C. aeruginosus, Haliaeetus albicilla
Number of teeth6 – 7776 – 76 – 7
Head collarabsentabsentabsentabsent
Male: Body length1210.815 – 13.42013.26 – 13.307.1 – 9.8 (8.7)8.11 – 8.434 – 1412.9
Body width0.487 – 0.5450.5010.31 – 0.350.25 – 0.60.409
Oesophagus length0.730.721 – 0.7450.7140.51 – 0.580.728
Buccal capsule (width x depth)0.185 x 0.1850.175 – 0.187 x 0.165 – 0.1740.232 x 0.276 – 0.2800.105 – 0.125 (0.114) x 0.095 – 0.11 (0.106)0.101 – 0.105 x 0.095 – 0.10 0.065 – 0.170 x 0.055 – 0.1660.201 x 0.184
Spicules length0.47 – 0.490.49 – 0.5110.5120.58 – 0.77 (0.63)0.64 – 0.67

in original text 0.64 – 6.67 – probably typographic error surprisingly, with only part of the sequences deposited by Krone et al. (2007) and described as “Hovorkonema variegatum” (Fig. 1).

0.320 – 0.8700.522
Gubernaculumpresent, 0.067 longpresent, 0.070 – 0.074 longabsentpresent???
Female: Body lengthup to 3026.7 – 28.9518.5 – 1915.3 – 30.525.954.9 – 4629.3
Body width0.975 – 1.41.020.680.55 – 1.01.04
Oesophagus length0.960.908 – 0.9521.090.55 – 1.25 0.935
Buccal capsule (width x depth)0.37 x 0.280.36 – 0.37 x 0.275 – 0.2830.408 – 0.5440.393 – 0.2750.31 x 0.250.11 – 0.56 x 0.08 – 0.3680.525 x 0.371
Vulvar distance from anterior end“…vulva just before to the middle of the body…”13.07 – 14.375before middle of the body36 – 40.5 (38.2) % of the body length10.2214 – 1616.94
Tail length0.350 – 0.3770.3600.19 – 0.250.220.16 – 0.450.467
Eggs0.072 x 0.0420.074 – 0.076 x 0.042 – 0.0440.092 – 0.096 x 0.0480.070 – 0.088 x 0.046 – 0.0550.072 – 0.080 x 0.049 – 0.051 0.082 x 0.043
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