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Table 3

The relationship between host species and size of certain anatomical structures of 43 measured specimens of Neoechinorhynchus johnii collected off the Pacific coast of Vietnam mostly in 2017.

Worm sex Character Host species
Eleutheronema tetradactylum (n = 13) Johnius carouna (n = 22) Otolithes ruber (n = 8)
Female Trunk length (mm) 15.0–120.00 (62.58)* 10.00–46.25 (31.77) 50.00–61.00 (55.00)
Male Trunk length (mm) 25.60 13.75–27.50 (22.50) 30.00–35.00 (32.00)
Female Proboscis length 112–145 (131) 142–162 (151) 160–187 (169)
Female Ant. Proboscis hook L 62–100 (83) 97–117 (107) 97–112 (109)
Male Ant. Proboscis hook L 62–67 (64) 92–112 (104) 107
Female Prob. Receptacle L 255–468 (380) 400–551 (475) 510–551 (530)
Male Prob. Receptacle L 343 300–468 (401) 572
Male Post. Testis L (mm) 4.25 3.00–10.00 (5.25) 8.12–8.95 (8.53)
*

Range (mean).

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