关键词: 洞庭湖外睾吸虫, 红鲫, 金鱼, 感染

Abstract: Objective\ To develop the infectious models by Exorchis Dongting huensis. Methods\ Red crucian carp(Carassius auratus red variety) and goldfish(Carassius auratus van) were respectively put into the chlorine_free tap water with the oncomelanias so as to be infected naturally with Exorchis Dongting huensis cercariae,and the anatomic observations were carried out at different times.Results \ All the fishes were infected with Exorchis Dongting huensis cercariae(the infectious rate being 100%) and the cercariae were developed into the mature metacercariae in the fishes.During the experiment,three goldfishes were dead and no red crucian carp died.Conclusion\ The red crucian carp and goldfishes could be the host animals in developing the infectious model with Exorchis Dongting huensis, and the former may be superior to the latter.

Key words: Exorchis Dongting huensis, Red crucian carp, Goldfish, Inection