Fig. 1.
Comparison of selected biometrical and morphological characteristics of C_(Hovorkonema) bronchialis (Mühling, 1884); all measurements in millimeters
| Author | Chapin (1925) | Griffiths et al. (1954) | Ryžikov and Zavadil (1958) | Hernandez-Rodriguez et al. (1978) |
|---|---|---|---|---|
| Country | USA, North America | USA, North America | Ukraina, Europe | Espania, Europe |
| Host | domestic geese, swans | domestic geese | Anser anser dom | . Anser anser |
| Number of teeth | ? | 6 – 7 | 7 | ? |
| Head collar | absent | absent | weakly differentiated | ? |
| Male: Body length | 4 – 5.8 | 9.5 – 10 | 9.5 – 10.7 | 10 – 12 |
| Body width | 0.25 – 0.328 | 0.32 – 0.33 | 0.367 – 0.402 | |
| Oesophagus length | 0.35 | 0.560 – 0.570 | 0.630 – 0.690 | |
| Buccal capsule (width x depth) | 0.09 – 0.13 x 0.14 | 0.145 – 0.15 x 0.109 – 0.132 | 0.117 – 0.123 x 0.091 – 0.105 | |
| Spicules length | 0.51 – 0.62 | 0.54 – 0.70 | 0.58 – 0.72 | 0.56 – 0.70 |
| Gubernaculum | ? | ? | present, 0.08 long | ? |
| Female: Body length | 16 – 31 | 16 – 26 | 25 – 40 | 22 – 28 |
| Body width | 0.7 – 0.9 | 0.75 – 0.86 | 0.62 – 0.83 | 0.376 – 0.779 |
| Oesophagus length | 1.0 – 1.14 | 1.12 – 1.15 | 1.210 – 1.350 | |
| Buccal capsule (width x depth) | 0.325 x 0.205 | 0.33 – 0.42 x 0.325 | 0.41 – 0.56 x 0.304 – 0.368 | 0.262 – 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 end | in first 1/3 length of the body |
| Tail length | 0.16 – 0.30 | 0.075 | 0.272 – 0.336 | 0.230 – 0.263 |
| Eggs | 0.074 – 0.083 x 0.049 – 0.062 | 0.068 – 0.085 x 0.043 – 0.058 | 0.073 – 0.083 x 0.052 – 0.056 | 0.082 – 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 name | C. (Hovorkonema) americana | C. (Hovorkonema) brodskii | C. (Hovorkonema) variegatum | ||||
|---|---|---|---|---|---|---|---|
| Author | Chapin (1925) | Borgsteede and Okulewicz (2001) | Sultanov (1946) | Vogel (1928) | Okulewicz (1984) | Hartwich (1994) | Krone et al. 2007 |
| Country | USA, North America | Holland, Europe | Tajikistan, Asia | Germany, Europe | Poland, Europe | Germany, Europe | Germany, Europe |
| Host | Buteo borealis | Accipiter gentilis, Buteo buteo, B. lagopus | Circus aeruginosus | Grus sp., Balearica pavonina | Ciconia ciconia | Anseriformes, Ciconiiformes Gruiformes | Accipiter gentilis, A. nisus, B. buteo, C. aeruginosus, Haliaeetus albicilla |
| Number of teeth | 6 – 7 | 7 | 7 | 6 – 7 | 6 – 7 | ||
| Head collar | absent | absent | absent | absent | |||
| Male: Body length | 12 | 10.815 – 13.420 | 13.26 – 13.30 | 7.1 – 9.8 (8.7) | 8.11 – 8.43 | 4 – 14 | 12.9 |
| Body width | 0.487 – 0.545 | 0.501 | 0.31 – 0.35 | 0.25 – 0.6 | 0.409 | ||
| Oesophagus length | 0.73 | 0.721 – 0.745 | 0.714 | 0.51 – 0.58 | 0.728 | ||
| Buccal capsule (width x depth) | 0.185 x 0.185 | 0.175 – 0.187 x 0.165 – 0.174 | 0.232 x 0.276 – 0.280 | 0.105 – 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 – 0.166 | 0.201 x 0.184 |
| Spicules length | 0.47 – 0.49 | 0.49 – 0.511 | 0.512 | 0.58 – 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 – 0.870 | 0.522 |
| Gubernaculum | present, 0.067 long | present, 0.070 – 0.074 long | absent | present | ? | ? | ? |
| Female: Body length | up to 30 | 26.7 – 28.95 | 18.5 – 19 | 15.3 – 30.5 | 25.95 | 4.9 – 46 | 29.3 |
| Body width | 0.975 – 1.4 | 1.02 | 0.68 | 0.55 – 1.0 | 1.04 | ||
| Oesophagus length | 0.96 | 0.908 – 0.952 | 1.09 | 0.55 – 1.25 0 | .935 | ||
| Buccal capsule (width x depth) | 0.37 x 0.28 | 0.36 – 0.37 x 0.275 – 0.283 | 0.408 – 0.544 | 0.393 – 0.275 | 0.31 x 0.25 | 0.11 – 0.56 x 0.08 – 0.368 | 0.525 x 0.371 |
| Vulvar distance from anterior end | “…vulva just before to the middle of the body…” | 13.07 – 14.375 | before middle of the body | 36 – 40.5 (38.2) % of the body length | 10.22 | 14 – 16 | 16.94 |
| Tail length | 0.350 – 0.377 | 0.360 | 0.19 – 0.25 | 0.22 | 0.16 – 0.45 | 0.467 | |
| Eggs | 0.072 x 0.042 | 0.074 – 0.076 x 0.042 – 0.044 | 0.092 – 0.096 x 0.048 | 0.070 – 0.088 x 0.046 – 0.055 | 0.072 – 0.080 x 0.049 – 0.051 0 | .082 x 0.043 | |