Open Access
Table 2
Comparative measurements of new species of Archigetes from ictiobine fish (Catostomidae) in Mississipppi, USA.
| Species | Archigetes loculotruncatus n. sp. | Archigetes megacephalus n. sp. | Archigetes vadosus n. sp. | |||||
|---|---|---|---|---|---|---|---|---|
| Host | Ictiobus bubalus* | I. bubalus | I. bubalus* | |||||
| I. niger | I. cyprinellus | |||||||
| Carpiodes cyprinus | I. niger* | |||||||
| Character/no. of specimens | n = 10 | (mean ± SD) | n = 10 | (mean ± SD) | n = 7 | (mean ± SD) | ||
| Body length (mm) | 6.0–8.3 | (7.2 ± 0.8) | 2.6–4.8 | (3.6 ± 0.7) | 2.8–6.6 | (4.4 ± 1.3) | ||
| Maximum width | 523–757 | (634 ± 72) | 366–544 | (480 ± 57) | 380–567 | (485 ± 73) | ||
| Width at cirrus sac-level | 543–751 | (608 ± 50) | 364–535 | (452 ± 59) | 341–505 | (416 ± 61) | ||
| Ratio of body width to body length | 7–11% | (9 ± 1%) | 10–17% | (14 ± 2%) | 9–15% | (11 ± 2%) | ||
| Scolex length | 629–787 | (698 ± 63) | 569–753 | (649 ± 56) | 466–690 | (599 ± 82) | ||
| Width | 622–954 | (768 ± 131) | 604–811 | (715 ± 86) | 473–704 | (591 ± 94) | ||
| Ratio of scolex width to neck width | 41–67% | (49 ± 7 %) | 30–49% | (38 ± 6%) | 50–63% | (56 ± 6%) | ||
| Ratio of scolex width to body width | 95–157% | (122 ± 19%) | 115–167% | (150 ± 18%) | 113–132% | (122 ± 6%) | ||
| Ratio of scolex width to body length | 9–13% | (11 ± 1%) | 16–28% | (21 ± 4%) | 11–18% | (14 ± 3%) | ||
| Neck length | 716–1049 | (781 ± 74) | 99–637 | (353 ± 214 | 163–407 | (246 ± 119) | ||
| Width | 331–416 | (377 ± 38) | 231–338 | (269 ± 38) | 246–398 | (327 ± 52) | ||
| Ratio of neck length to body length | 10–15% | (12 ± 2%) | 4–16% | (9 ± 4%) | 2–9% | (6 ± 2%) | ||
| Ratio of neck width to body width | 50–65% | (59 ± 5%) | 46–69% | (57 ± 9%) | 59–80% | (68 ± 8%) | ||
| Testis size (length × width) | 110–178 × 82–144 (n = 30) | 83–154 × 77–116 (n = 30) | 52–129 × 50–129 (n = 21) | |||||
| Number | 72–145 | (86 ± 14) | 37–65 | (53 ± 9) | 76–149 | (100 ± 26) | ||
| Number/500 μm of length of testicular area | 9–22 | (14 ± 5) | 14–26 | (18 ± 5) | 13–38 | (24 ± 9) | ||
| Distance from first vitelline follicles | 106–366 | (226 ± 85) | 44–203 | (115 ± 54) | 47–267 | (149 ± 26) | ||
| Distance from anterior extremity | 1573–2004 | (1658 ± 68) | 727–1581 | (1110 ± 301) | 734–1132 | (963 ± 156) | ||
| Testicular area length (mm) | 2.9–4.6 | (4.0 ± 0.6) | 1.1–2.1 | (1.5 ± 0.3) | 1.3–3.4 | (2.2 ± 0.7) | ||
| Extent in relation to the body width at CS level | 19–29% | (23 ± 3%) | 22–37% | (27 ± 5%) | 17–31% | (23 ± 5%) | ||
| Ratio of testicular area length to total body length | 49–57% | (54 ± 3%) | 36–48% | (42 ± 3%) | 42–60% | (50 ± 6%) | ||
| Cirrus-sac size (length × width) | 207–254 × 195–238 | 124–166 × 123–172 | 146–178 × 113–165 | |||||
| Ratio of cirrus-sac width to body width at CS level | 31–41% | (36 ± 3%) | 28–37% | (33 ± 3%) | 32–43% | (50 ± 6%) | ||
| External seminal vesicle (length × width) | 208–340 × 111–174 | 125–208 × 59–88 | 131–267 × 65–104 | |||||
| Ratio of ESV length to CS length | 64–124% | (90 ± 20%) | 74–104% | (85 ± 10%) | 62–111% | (85 ± 17%) | ||
| Distance of genital atrium from posterior end | 1201–1801 | (1390 ± 181) | 611–1040 | (840 ± 158) | 652–1202 | (890 ± 200) | ||
| Ovary width | 381–557 | (455 ± 46) | 224–380 | (308 ± 55) | 238–340 | (296 ± 40) | ||
| Length of ovarian wings | 211–500 | (395 ± 47) | 204–308 | (254 ± 41) | 220–409 | (294 ± 69) | ||
| Width of ovarian wings | 89–161 | (133 ± 18) | 75–127 | (96 ± 14) | 62–117 | (96 ± 16) | ||
| Ratio of length of ovarian wings to length of body | 4–6% | (6 ± 1%) | 6–9% | (8 ± 1%) | 5–8% | (7 ± 1%) | ||
| Ratio of length of ovarian wings to length of uterine area | 31–40% | (34 ± 3%) | 23–40% | (35 ± 5%) | 34–49% | (40 ± 6%) | ||
| Vitelline follicle size (length × width) | 73–138 × 60–105 (n = 30) | 63–101 × 39–88 (n = 30) | 36–98 × 34–90 (n = 21) | |||||
| Distance of anteriormost vitelline follicles from anterior extremity | 1061–1781 | (1432 ± 88) | 654–1380 | (997 ± 270) | 694–1028 | (813 ± 122) | ||
| Length of uterine area | 954–1456 | (1202 ± 171) | 545–896 | (755 ± 130) | 553–1018 | (754 ± 156) | ||
| Ratio of uterine area to testicular area | 28–34% | (31 ± 2%) | 42–71% | (51 ± 8%) | 25–42% | (35 ± 6%) | ||
| Ratio of uterine area to length of body | 15–18% | (17 ± 1%) | 18–27% | (21 ± 3%) | 15–20% | (17 ± 2%) | ||
| Size of intrauterine eggs | 46–52 × 26–35 (n = 40) | 35–47 × 22–39 (n = 40) | 40–52 × 25–35 (n = 28) | |||||
| Shape of field of postovarian vitelline follicles | V | V | V | |||||
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