Table 1 Comparisons of the histological characteristics of a female and male of Onchocerca dewittei japonica , obtained from human cases in the current study, with congeneric species from Japan
From: New zoonotic cases of Onchocerca dewittei japonica (Nematoda: Onchocercidae) in Honshu, Japan
| Â | Onchocerca dewittei japonica Uni, Bain & Takaoka, 2001 | Onchocerca dewittei japonica | Onchocerca dewittei japonica | Onchocerca gutturosa Neumann, 1910 | Onchocerca lienalis Stiles,1892 | Onchocerca skrjabini Rukhlyadev, 1964 | Onchocerca eberhardi Uni & Bain, 2007 | Onchocerca cervicalis Railliet & Henry, 1910 | Onchocerca suzukii Yagi, Bain & Shoho, 1994 |
|---|---|---|---|---|---|---|---|---|---|
References | Case 1 in the current study | Case 2 in the current study | [20] | ||||||
Host(s) | Human in Hiroshima | Human in Shimane | Sus scrofa leucomystax Temminck, 1842 (Japanese wild boar) | Cattle | Cattle | Cervus nippon Temminck, 1838 (sika deer) and Capricornis crispus (Temminck, 1845) (Japanese serows) | Cervus nippon (sika deer) | Horses | Capricornis crispus (Japanese serows) |
Female | |||||||||
Body width (at midbody) | 200-225 | NA | 180-310 | 200-300 | 150-220 | 340 | 170-230 | 320-570 | 228-430 |
Distance between two adjacent ridges | 150-250 | NA | 185-290 | 87-166 | 60 | 50-89 | 25-45 | 30***** | None |
Shape of ridges (H/W)†in longitudinal sections | 13-18/18-25, Triangular | NA | 8-23/23-30, Triangular | 10-13/26, Rounded | 3/15-23, Small, rounded | 6/12****, Small | 3/8****, Small, rounded | 4/8*****, Small, rounded | None |
Number of inner striae between adjacent ridges | None | NA | None | 2-4 | 2 | 3-4**** | 2 | 2***** | None |
Thickness of cuticle without ridges | 25 | NA | 10-32 | 25-35* | 10 | 20-30**** | 28-32 | 19***** | 15-50****** |
Number of muscle cells per quadrant | 8-13 | NA | 8-22 | 2-7** | 5-7*** | 2-3**** | 1-2**** | - | 8-13****** |
Male | |||||||||
Body width (at midbody) | NA | 83-85x133-138 | 130x145 | 60-100 | 50-80 | 105 | 50-68 | 140-190 | 180-212 |
Thickness of cuticle | NA | 5 | 4 | 5 | 2 | - | - | - | 8-10 |
Number of small ridges | NA | 138-152 | 130 | None | None | None | None | None | None |
Small ridges (H/W) | NA | 1/1 | 1/1 | None | None | None | None | None | None |