结果证实其第一中间宿主为拟钉螺属的几种拟钉螺；第二中间宿主是景洪溪蟹和毛足溪蟹；
The results confirm the first intermediate hosts are several species of Tricula, and the second intermediate hosts are Potamon chinghungense and P. hispidum.
根据经验知，生源关系相近的两植物具有相似化学成分，因此本论文对1923-2008年蟹甲草属和华蟹甲属植物的化学成分及生物活性研究进行了综述。
To convenient for the phytochemical research on Sinacalia, this thesis reviewed on the chemical constituents and pharmacological activities of Cacalia and Sinacalia from 1923 to 2008.
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