Comparison of external morphological characteristics and movement patterns between Schistosoma japonicum and S. sinensis cercariae
10.16250/j.32.1374.2023136
- VernacularTitle:日本血吸虫和中华血吸虫尾蚴外部形态 及运动方式比较
- Author:
Jing SONG
1
;
Zongya ZHANG
1
;
Meifen SHEN
1
;
Jihua ZHOU
1
;
Chunying LI
2
;
Zaogai YANG
2
;
Yi DONG
1
;
Chunhong DU
1
Author Information
1. Yunnan Institute of Endemic Disease Control and Prevention, Yunnan Key Laboratory of Natural Focus Disease Control Technology, Dali, Yunnan 671000, China
2. Kunming Medical University, China
- Publication Type:Journal Article
- Keywords:
Schistosoma japonicum;
Schistosoma sinensis;
Cercaria;
Oncomelania hupensis;
Tricula;
External morphology;
Movement pattern
- From:
Chinese Journal of Schistosomiasis Control
2024;36(4):384-387
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the external morphological characteristics and movement patterns between Schistosoma japonicum and S. sinensis cercariae. Methods S. japonicum and S. sinensis cercariae were heat-fixed, and well-extended cercariae, of 50 each species, were randomly selected for measurement of body length, body width, tail stem length, and tail fork length. The external morphological characteristics of S. japonicum and S. sinensis cercariae were compared. In addition, S. japonicum-infected Oncomelania snails and S. sinensis-infected Tricula snails were observed under a microscope and the movement patterns of S. japonicum and S. sinensis cercariae were compared. Results The mean body length, body width, tail stem length, and tail fork length were (0.16 ± 0.01), (0.05 ± 0.01), (0.14 ± 0.01) mm and (0.06 ± 0.01) mm for S. japonicum cercariae, and (0.13 ± 0.01), (0.05 ± 0.01), (0.13 ± 0.01) mm and (0.06 ± 0.01) mm for S. sinensis cercariae, respectively, and there were significant differences in terms of cercaria body length (t = 14.583, P < 0.05) and tail stem length (t = 3.861, P < 0.05), while no significant differences were seen in terms of body width (t = 0.896, P > 0.05) or tail fork length (t = −0.454, P > 0.05). Microscopy revealed that the tails of both S. japonicum and S. sinensis cercariae swung from side to side and there was no significant difference in their movement pattern. Conclusion S. sinensis and S. japonicum cercariae share highly similar external external morphological characteristics and movement patterns.
