Open Access
Table 1.
A comparison between the three populations of Echinorhynchus baeri from Lake Sevan and Turkey.
| Lake Sevan | Lake Sevan | Turkey | |
|---|---|---|---|
| Kostylew, 1928 | Dinnik, 1933 | this paper | |
| Host | Salmo ischchan | Salmo ischchan | Salmo, trutta |
| Location | Lake Sevan, Armenia | Lake Sevan, Armenia | Kilise Stream, Murat River, Turkey |
| Males | |||
| Trunk mm | 7.25 × 0.60–0.75 | 3.5–5.5 × 0.5–0.7 | 5.62–7.37 (6.44) × 0.62–0.87 (0.75) |
| Proboscis μm | 770 × 300–380 | 600–1,000 × 300–500 | 686–728 (706) × 281–364 (329) |
| Hooksa | All slender | Median hooks more robust | Slender with occasional robust hooks |
| 10 hooks in 22–24 rows | 8–9 hooks in 18–20 rows | 8–10 (rarely 11) (9.0) hooks in 18–24 (21.9) rows | |
| Median hooksa | Dorso-ventrally differentiated | Not differentiated | Some dorso-ventral differentiation |
| Hook rootsa | Simple, posterior hook rootless | Manubriated | Simple anteriorly, manubriated posteriorly |
| Receptacle mm | 1.40 | 1.10–1.50 × 0.20–0.40 | 1.09–1.38 (1.23) × 0.25–0.44 (0.34) |
| Lemnisci mma | Not longer than receptacle | Shorter than receptacle, 0.67–1.0 | Sub equal; markedly longer than receptacle |
| Shorter lemniscus 1.35–1.77 (1.53) × 0.13–0.40 (0.19) | |||
| Longer lemniscus 1.46–1.89 (1.64) × 0.15–0.31 (0.21) | |||
| Testes | Round, postequatorial, | Elongate, equatorial, | Elongate, equatorial to postequatorial, |
| Not contiguous | Contiguous | Nearly contiguous | |
| Ant. testis μm | 550–700 (?) × 300–380 | 350–420 × –b | 541–853 (713) × 260–416 (291) |
| Post. testis μm | 380–500 × 300–320 | 350–420 × – | 541–1,040 (723) × 270–395 (315) |
| Cement glands | 6 in pairs | 6 clustered | In various patterns between paired & clustered |
| Dimensions μm | – | – | Anterior: 312–572 (461) × 208–406 (283) |
| Posterior: 312–520 (388) × 218–291 (245) | |||
| Saefftigen’s pouch μm | – | – | 520–624 (559) × 187–302 (250) |
| Females | |||
| Trunk mm | 11.00–12.00 × 0.60–0.75 | 6.50–14.00 × 0.70–1.00 | 8.17–14.50 (11.86) × 0.70–1.20 (0.89) |
| Proboscis μm | – | – | 728–894 (820) × 343–458 (395) |
| Hooks | – | – | 8–10 (8.6) hooks in 18–24 (21.6) rows |
| Receptacle mm | – | – | 1.30–1.82 (1.52) × 0.21–0.44 (0.36) |
| Lemnisci mm | – | – | Shorter: 1.25–2.45 (2.01 × 0.16–0.29 (0.23) |
| Longer: 1.51–2.50 (2.12) × 0.16–0.29 (0.22) | |||
| Reproductive system mm | – | – | 1.98–3.56 (2.76), 20–29 (24%) of trunk length |
| Eggs μm | 105–126 × 22–24 | 108–120 × 19–22 | 95–110 (105) × 18–22 (20) |
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