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Table 4 Comparative morphometrics of L3 of Varestrongylus eleguneniensis and selected Protostrongylidae species (Varestrongylinae, Elaphostrongylinae, Muellerinae)

From: Varestrongylus eleguneniensis sp. n. (Nematoda: Protostrongylidae): a widespread, multi-host lungworm of wild North American ungulates, with an emended diagnosis for the genus and explorations of biogeography

Characters

V. eleguneniensis a1

V. eleguneniensis a2

V. alpenae b

P. andersoni c

P. odocoilei c

P.

tenuis c

E. rangiferi d

U. pallikuukensis e

U. pallikuukensis f

(n = 7–21)

(n = 4)

(n = 18)

(n = 10)

(n = 10)

(n = 10)

(n = 15)

(n = 10)

(n = 29)

Total length

453–540 (497 ± 25.95)

451–541 (491 ± 37.34)

434-515 (480 ± 20)

911–1,085 (1,003)

738–977 (890)

1,100–1,323 (1,200)

937–1,041 (1,004)

514–600 (560 ± 33.64)

545–691 (648 ± 35)

Esophagus§

151–210 (178 ± 14.12)

163–187 (180.3 ± 11.53)

–

322–412 (365)

282–399 (323)

412–521 (463)

338–421 (381)

181–214 (200 ± 11.71)

201–263 (233 ± 13)

Esophagus base width

14–21 (16.4 ± 2.14)

15–18 (16.3 ± 1.26)

–

–

–

–

–

–

18–35 (23 ± 3.1)

Body at esophagus base

23–40 (29.8 ± 4.5)

31–34 (31.8 ± 1.5)

26–30 (28 ± 2)

36–43* (40)

36–52* (44)

47–62* (54)

42–49 (46)

39–60 (47 ± 7)

42–46 (44 ± 1.8)

Nerve-ring§

71–94 (83.8 ± 5.66)

72–85 (78.5 ± 9.19)

–

123–130 (128)

135–154 (141)

152–174 (165)

120–150 (139)

93–106 (99 ± 4.23)

83–118 (107 ± 6.7)

Excretory pore§

92–119 (105.5 ± 6.6)

90–108 (101.8 ± 8.5)

–

–

–

–

138–163 (153)

109–127 (118 ± 5.01)

104–146 (130 ± 7.9)

Genital primordium§

288–400 (349.4 ± 46.7)

301–384 (336.6 ± 42.85)

–

651–738 (697)

521–586 (561)

694–846 (749)

574–648 (615)

318–388 (361 ± 22.74)

316–432 (402 ± 26)

Tail

25–34 (29.4 ± 3.5)

26–31 (29.8 ± 2.5)

–

32–43 (36)

45–50 (47)

48–64 (53)

40–70 (52)

26–34 (31 ± 2.88)

26–34 (31 ± 2.88)

Tail protuberance

2–5 (3 ± 0.88)

2.5–4 (3.3 ± 0.61)

–

–

–

–

–

Not present

Not present

  1. All measurements are given in micrometers (μm).
  2. a1Present study, L3 from experimentally infected Deroceras laeve. Measurements in variable number of larval specimens (n = 21: Total length, Tail, Tail protuberance; n = 20: Esophagus, Esophagus base width, Body at esophagus base, Nerve-ring; n = 19: Excretory pore; n = 7: Genital primordium);
  3. a2Present study, L3 from experimentally infected Deroceras reticulatum;
  4. bFrom experimentally infected White-tailed and Mule deer using Webbhelix multineata (syn. Triodopsis multineata) and N. albolabris as IH [26];
  5. cFrom [47] using W. multineata as IH. Larval sources: P tenuis from White-tailed deer, Rachelwood Wildlife Research Preserve, Pennsylvania; P. odocoilei from Mule deer, Jasper National Park, Alberta; P. andersoni from White-tailed deer, southeastern BC;
  6. dL1 of caribou from Newfoundland (as Elaphostrongylus cervi), cited in [12];
  7. eFrom [6] using D. reticulatum as IH. Source of L1: muskoxen from Nunavut;
  8. fLarvae grown in D. laeve as IH. Measurements from ‘late’ and emerged L3 are included [36]. Source of L1: experimentally infected muskoxen [35].
  9. §Measurements from anterior end.
  10. Dashes represent measurements that were not determined, despite of the presence of the character in larvae of the species.
  11. *Body width measured at intersection of esophagus and intestine.
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Parasites & Vectors

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