Table 4
Comparison of measured metrical data (in μm) of Opisthorchis viverrini s.l. cercariae from different snail host taxa in different habitats at different areas between the present study and previous studies.
| Source | Present study | Boonmekam et al. [7] | Ngern-klun et al. [36] | Scholz et al. [47] | Wykoff et al. [63] |
|---|---|---|---|---|---|
| Study area | BMR | Cambodia | NTH | Lao PDR | NETH |
| Habitat type | CNS | NST-STWB | Rice field | Rice field | Unspecified |
| Source of cercariae | B. s. siamensis | NST-BS | B. funiculata | BSG | BSG |
| Examination method | Shedding | NST-MOC | Shedding | NST-MOC | Shedding |
| Type of specimen | Fixed | Fixed | N/A | Fixed | Fixed |
| Fixation method | 10% NBF | N/A | N/A | 4% GAiCB | Hot formalin |
| Dyeing method | Unstained | Unstained + NR | N/A | Gold coating | N/A |
| Type of microscope | CLM | CLM | CLM | SEM | N/A |
| No. of specimens | 20 | 10 | N/A | N/A | N/A |
| Body width (BW) | 87 ± 8 | – | 58 ± 12 | – | 75 ± N/A |
| (72–96) | (31–42) | – | (33–68) | (61–96) | |
| Body length (BL) | 183 ± 10 | – | 184 ± 24 | – | 154 ± N/A |
| (167–195) | (50–62) | – | (100–250) | (140–183) | |
| Oral sucker width (OSW) | 34 ± 2 | – | – | – | 36 ± N/A |
| (30–38) | (8–13) | – | – | (36–37) | |
| Oral sucker length (OSL) | 38 ± 3 | – | – | – | 43 ± N/A |
| (34–41) | (9–14) | – | – | (34–51) | |
| Ventral sucker width (VSW) | 22 ± 1 | – | – | – | – |
| (19–24) | (8–12) | – | – | – | |
| Ventral sucker length (VSL) | 24 ± 2 | – | – | – | – |
| (20–26) | (7–13) | – | – | – | |
| Pharynx width (PW) | 18 ± 1 | – | – | – | – |
| (16–20) | (5–8) | – | – | – | |
| Pharynx length (PL) | 19 ± 1 | – | – | – | – |
| (17–21) | (4–7) | – | – | – | |
| Excretory bladder width (EBW) | 41 ± 3 | – | – | – | – |
| (35–46) | (14–18) | – | – | – | |
| Excretory bladder length (EBL) | 61 ± 4 | – | – | – | – |
| (53–67) | (10–16) | – | – | – | |
| Tail width (TW) | 37 ± 3 | – | 30 ± 5 | – | 26 ± N/A |
| (32–41) | – | – | (16–29) | – | |
| Tail length (TL) | 455 ± 10 | – | 417 ± 38 | – | 392 ± N/A |
| (435–471) | (85–150) | – | (360–475) | (350–437) | |
| Transversely striated tail-tegument width (TSTW) | 62 ± 3 | – | – | – | – |
| (58–65) | – | – | – | – | |
| Transversely striated tail-tegument length (TSTL) | 173 ± 10 | – | – | – | – |
| (154–186) | – | – | – | – | |
| Dorso-ventral finfold width (DFW) | 34 ± 2 | – | – | – | – |
| (31–37) | – | – | – | – | |
| Dorso-ventral finfold length (DFL) | 325 ± 13 | – | – | – | – |
| (310–349) | – | – | – | – | |
| Total length | 624 ± 20 | – | – | – | 532 ± N/A |
| (593–651) | – | – | – | (490–565) |
Abbreviations: NTH = northern Thailand; NETH = northeastern Thailand; NST-STWB = no specified type of standing-water body (rice field, seasonal lake or pond); NST-BS = no specified taxon of B. siamensis; BSG = B. s. goniomphalos; NST-MOC = no specified method to obtain the cercariae; 4% GAiCB = 4% glutaraldehyde in cacodylate buffer; CLM = compound light microscope; SEM = scanning electron microscope. The insertion of single hyphenation (–) without numbers on either side and N/A means that data have not been specified.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.