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Table 2

Morphometric comparisons among species of Neoechinorhynchus from Mugil cephalus and Chelon auratus in the Mediterranean and the Black Sea in our collections.

Neoechinorhynchus sp.
N. personatus
N. personatus
N. ponticus n. sp.
Host
Mugil cephalus
Mugil cephalus
Chelon auratus
Locality Tunis, Mediterranean Black Sea Black Sea
Males n = 8 n = 9 n = 9
Trunk (mm) 9.55–10.07 (9.80) × 0.87–1.10 (1.0)* 7.25–10.25 (9.00) × 0.53–0.92 (0.70) 7.87–8.75 (8.44) × 0.67–1.00 (0.85)
Proboscis 182–205 (190) × 205–225 (213) 162–218 (200) × 200–242 (224) 100–145 (127) × 135–175 (151)
Hook length
 Ant. 107–147 (123) 112–130 (123) 77–87 (82)
 Mid. 70–85 (75) 65–85 (78) 40–57 (45)
 Post. 53–71 (60) 57–72 (66) 30–40 (34)
Receptacle 728–1,019 (882) × 218–281 (253) 780–936 (852) × 187–291 (221) 603–728 (653) × 135–187 (157)
Lemnisci (mm)
 Short 3.12–4.25 (3.70) × 0.13–0.19 (0.15) 2.86–3.26 (3.06) × 0.10–1.3 (1.2) 1.73–2.75 (2.14) × 0.10–0.15 (0.14)
 Long 3.12–4.67 (3.86) × 0.16–0.19 (0.17) 3.57–4.05 (3.81) × 0.11–0.19 (0.15) 2.03–2.81 (2.41) × 0.12–0.19 (0.14)
Anterior testis (mm) 1.25–1.70 (1.44) × 0.35–0.50 (0.45) 0.70–1.50 (1.11) × 0.32–0.45 (0.38) 0.25–1.00 (0.70) × 0.35–0.50 (0.44)
Posterior testis (mm) 1.25–1.75 (1.49) × 0.25–0.50 (0.43) 1.00–1.45 (1.19) × 0.30–0.45 (0.35) 0.50–0.87 (0.63) × 0.40–0.50 (0.44)
Cement gland (mm) 1.67–2.67 (2.09) × 0.37–0.50 (0.45) 1.00–1.77 (1.29) × 0.22–0.40 (0.31) 0.75–1.50 (0.96) × 0.45–0.52 (0.49)
Cement reservoir 450–625 (560) × 225 – 350 (300) 375–520 (465) × 250–312 (270) 375–500 (431) × 253–375 (310)
Saefftigen’s pouch (mm) Obscured Obscured 0.77–1.25 (1.08) × 0.12–0.30 (0.21)
Bursa (mm) 0.42–1.20 (0.72) × 0.40–0.52 (0.47) 0.50–1.25 (0.94) × 0.20–0.42 (0.30)
Females n=8 n=17 n=10
Trunk (mm) 11.00–14.75 (13.65) × 0.77–1.27 (1.05) 8.00–21.25 (14.48) × 0.50–1.22 (0.91) 8.37–10.75 (9.73) × 0.57–0.95 (0.82)
Proboscis 162–200 (184) × 205–230 (217) 187–239 (215) × 208–250 (231) 112–142 (129) × 132–162 (152)
Hook length
 Ant. 110–137 (124) 105–142 (123) 75–132 (90)
 Mid. 62–80 (71) 75–90 (81) 40–77 (50)
 Post. 60–67 (64) 62–77 (68) 32–67 (40)
Receptacle 832–1,040 (910) × 218–333 (260) 707–988 (856) × 198–364 (273) 634–780 (718) × 156–208 (179)
Lemnisci (mm)
 Short 3.70 × 0.15 4.80 × 0.17 2.00–2.75 (2.46) × 0.10–0.15 (0.13)
 Long 3.90 × 0.17 4.86 × 0.17 2.50–3.75 (3.33) × 0.12–0.17 (0.14)
Eggs 45–50 (48) × 10–12 (10) 35–47 (40) × 10–15 (12)
Reproductive syst. (mm) 1.25–1.56 (1.44) 0.96–1.67 (1.29) 0.73–1.25 (1.09)

Range (mean) in μm unless otherwise stated.

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