Table 1.
Measurements of Echinostoma miyagawai adults in comparison with other 37-collar-spined Echinostoma species (unit: μm)
| Species | E. miyagawai (this study) (n=14) | E. miyagawai [15] (n=13) | E. revolutum [15] (n=16) | E. paraulum [15] (n=10) | ||||
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| Organ | Mean | Range | Mean | Range | Mean | Range | Mean | Range |
| Body length (BL) | 7,186 | 6,186–8,536 | 9,990 | 9,163–11,014 | 10,531 | 9,454–11,846 | 6,345 | 5,600–6,862 |
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| Body width 1 (BW1) | 843 | 868–1,274 | 1,159 | 1,029–1,272 | 1,298 | 1,182–1,454 | 1,043 | 923–1,108 |
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| Body width 2 (BW2) | 1,064 | 667–1,053 | 1,026 | 898–1,178 | 1,618 | 1,303–1,815 | 1,308 | 1,138–1,446 |
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| Body width 3 (BW3) | 1,220 | 1,012–1,416 | 1,305 | 1,197–1,459 | 1,815 | 1,454–2,092 | 1,514 | 1,231–1,662 |
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| Head collar length (CL) | 485 | 395–599 | 434 | 393–505 | 392 | 351–424 | 488 | 432–553 |
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| Head collar width (CW) | 614 | 528–725 | 656 | 598–692 | 607 | 552–652 | 729 | 644–781 |
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| Oral sucker length (OSL) | 267 | 227–307 | 305 | 262–337 | 316 | 261–358 | 287 | 265–318 |
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| Oral sucker width (OSW) | 301 | 233–412 | 293 | 262–355 | 282 | 246–303 | 335 | 280–371 |
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| Angle spine length (ASL) | 78 | 71–83 | 70 | 52–93 | 74 | 58–92 | 100 | 73–124 |
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| Angle spine with (ASW) | 21 | 19–25 | 22 | 17–29 | 17 | 11–24 | 21 | 15–28 |
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| Lateral spine length (LSL) | 81 | 75–91 | 76 | 67–87 | 79 | 64–91 | 101 | 85–120 |
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| Lateral spine width (LSW) | 21 | 18–24 | 23 | 20–26 | 17 | 12–21 | 21 | 17–25 |
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| Dorsal spine length (DSL) | 76 | 69–79 | 68 | 58–75 | 85 | 71–94 | 99 | 90–105 |
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| Dorsal spine width (DSW) | 21 | 18–24 | 21 | 19–26 | 18 | 13–23 | 21 | 19–23 |
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| Prepharynx length (PL) | 18 | 4–41 | 10 | 0–37 | 41 | 7–99 | 45 | 15–68 |
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| Pharynx length (PHL) | 273 | 230–292 | 299 | 262–337 | 237 | 209–258 | 324 | 273–379 |
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| Pharynx width (PHW) | 277 | 197–335 | 250 | 187–355 | 219 | 194–258 | 238 | 212–280 |
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| Esophagus length (ESL) | 659 | 569–790 | 585 | 542–655 | 408 | 318–569 | 408 | 265–546 |
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| Cirrus sac length (CSL) | 491 | 410–710 | 506 | 468–598 | 552 | 410–735 | 413 | 318–531 |
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| Cirrus sac width (CSW) | 262 | 242–292 | 300 | 281–355 | 316 | 243–403 | 281 | 205–326 |
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| Seminal vesicle length (SVL) | 244 | 205–330 | - | - | 336 | 224–440 | 238 | 152–303 |
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| Seminal vesicle width (SVW) | 133 | 82–183 | - | - | 146 | 60–212 | 134 | 114–144 |
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| Ventral sucker length (VSL) | 658 | 594–830 | 706 | 655–748 | 873 | 796–1,038 | 667 | 569–766 |
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| Ventral sucker width (VSW) | 648 | 544–910 | 738 | 655–785 | 893 | 796–1,061 | 731 | 705–766 |
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| Ovary length (OVL) | 281 | 198–342 | 283 | 243–355 | 349 | 288–394 | 150 | 114–182 |
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| Ovary width (OVW) | 410 | 290–620 | 397 | 337–449 | 416 | 291–493 | 246 | 212–288 |
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| Mehlis’ gland length (MEL) | 631 | 413–765 | 386 | 337–468 | 399 | 326–455 | 153 | 106–190 |
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| Mehlis’ gland width (MEW) | 233 | 135–295 | 373 | 318–411 | 734 | 582–849 | 310 | 258–341 |
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| Ant. testis length (ATL) | 534 | 403–653 | 564 | 430–692 | 788 | 629–932 | 384 | 341–455 |
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| Ant. testis width (ATW) | 728 | 588–982 | 409 | 337–505 | 597 | 425–750 | 377 | 326–447 |
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| Post. testis length (PTL) | 564 | 477–674 | 562 | 449–655 | 879 | 627–1,061 | 406 | 296–515 |
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| Post. testis width (PTW) | 708 | 593–787 | 411 | 337–524 | 579 | 395–705 | 415 | 288–531 |
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| Egg length (EL) | 93 | 79–105 | 95 | 94–96 | 114 | 108–125 | 113 | 104–122 |
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| Egg width (EW) | 62 | 56–70 | 60 | 59–60 | 65 | 57–75 | 62 | 53–70 |
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| Forebody length (FORE) | 1,121 | 912–1,269 | 1,408 | 1,253–1,533 | 1,369 | 1,200–1,662 | 1,218 | 985–1,600 |
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| ODIV | 982 | 808–1,131 | 1,181 | 1,103–1,324 | 1,027 | 923–1,262 | 1,074 | 923–1,354 |
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| OVAR | 3,923 | 3,536–4,311 | 4,856 | 4,507–5,348 | 4,461 | 3,969–5,046 | 3,043 | 2,739–3,385 |
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| TEND | 2,497 | 2,245–2,795 | 3,081 | 2,824–3,329 | 3,653 | 3,000–4,308 | 2,059 | 1,262–2,431 |
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| OSW/PHW | 1.09 | 0.88–1.30 | 0.97 | 0.78–1.11 | 1.29 | 1.15–1.54 | 1.41 | 1.24–1.58 |
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| BW1/BL (%) | 11.7 | 9.6–14.0 | 11.6 | 11.2–12.5 | 12.4 | 11.2–14.3 | 16.5 | 15.0–19.8 |
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| BW2/BL (%) | 14.8 | 13.1–17.0 | 10.3 | 9.7–10.9 | 15.4 | 13.8–17.4 | 20.7 | 18.9–24.7 |
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| BW3/BL (%) | 17.1 | 14.2–20.9 | 13.1 | 12.4–13.6 | 17.3 | 15.2–19.5 | 23.9 | 21.5–26.9 |
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| FORE/BL (%) | 15.6 | 14.0–17.2 | 14.1 | 13.4–14.9 | 13.0 | 10.9–14.8 | 19.3 | 15.5–26.3 |
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| CW/BW3 (%) | 50.6 | 43.1–58.4 | 50.4 | 46.2–56.9 | 33.6 | 28.3–38.3 | 48.4 | 42.0–57.3 |
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| OVID/BL (%) | 13.7 | 12.3–14.7 | 11.8 | 11.2–12.5 | 9.8 | 8.3–11.2 | 17.0 | 14.5–23.7 |
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| OVAR/BL (%) | 54.7 | 50.3–57.7 | 48.6 | 47.7–49.7 | 42.5 | 39.1–46.2 | 48.1 | 43.5–57.0 |
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| TEND/BL (%) | 34.8 | 31.2–36.7 | 30.9 | 30.1–31.9 | 34.6 | 31.4–37.4 | 32.3 | 22.0–35.4 |
ODIV, distance from anterior extremity to intestinal bifurcation; OVAR, distance from the posterior margin of ventral sucker to ovary; TEND, length of post-testicular region [15].