Open Access
Research Article

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)
a

Descriptive characters apply to males and females.

b

Not given.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.