| Recent Patterns of Infections with Digenetic Larval
Trematodes from Fresh-water Fishes in Three Rivers; Kyongbuk Province; Korea |
| 경북도내 강에서 채집된 담수어에 있어서 흡충류 피낭유충의 최근 감염상 |
|
백은희; 주종윤 |
|
|
|
|
| Abstract |
|
Recent pattern of infection rates and intensities with digenetic larval trematodes
from fresh-water fishes was studied in the Cheongdo River; Hyungsan River and Kumho River;
Kyongbuk Province during the period from March to November; 2008. Eleven species of digenetic
larval trematodes from 3 families and 15 species of the fish and three undetermined species were
found. The cyst of Cyathocotyle orientalis; Exorchis oviformis; and Metacercaria hasegawai were
found most frequently in 11 species. Clonorchis sinensis was found in 10 species; and the
infection rate was 82.6 percent in Gnathopogon atromaculatus’s flesh; 26.1 percent in fin and tail;
and in Pseudorasbora parva; the infection rate of the flesh; fin and tail; or scales was each 50
percent. As far the intensities of Clonorchis sinensis; Gnathopogon atromaculatus was the most
heavily infected species with an average number of 9.0 cysts per gram of flesh; and Zacco
platypus was very lightly infected species with 0.03. In the Chungdo River; the cyst of
Metacercaria hasegawai was found most frequently from 11 species out of 14 species of the fish;
and Cobitis sinensis and Pseudogobio esocinus were the most highly infected with 75.0 percent;
and the least infected by Zacco platypus with 8.3 percent. In the Hyungsan River; Exorchis
oviformis was the most frequently found cyst from six species out of 10 species of the fish; and in
the Kumho River; Exorchis oviformis was the most frequently found cyst from 2 species out of 6 species.
These results indicate that the rate of infection with digenetic larval trematodes including
Clonorchis sinensis was still relatively high; and the metacercarial burden in the fish varies
greatly by different fishes in comparison with data reported previously in the same rivers. |
| Key Words:
Cheongdo River, Clonorchis sinensis, digenetic larval trematodes, fresh-water
fish, Hyungsan River, Kumho River |
|
PDF Links
Full text via DOI
Download Citation
