陕西省姜片吸虫病疫源地媒介动物的究研(Ⅱ)扁卷螺的生态

<正> 根据家畜疫源地理论,作为疫源地要素之一的媒介动物的研究包括研究(1)媒介动物和寄生物之间的矛盾,(2)媒介动物和外界环境之间的矛盾以及(3)媒介动物体内的寄生物和外界环境之间的矛盾。陕西省姜片吸虫病疫源地媒介动物的研究已在中间宿主的确定一文中,以及部分地在病原的研究一文中作过报导。这些报导都涉及到上述媒介动物和寄生物之间的矛盾范围内。关于上述(2)(3)的矛盾研究,将在本文内提出。这些都属于媒介动物扁卷螺生态学研究的性质。1962—1963年我们在陕西

STUDIES ON THE ANIMAL VECTORS OF THE SHANSI FASCIOLOPSIASIS NIDUS (Ⅱ) THE BIONOMICS OF THE PLANORBIDS

An ecological study was made on the Planorbid snails, Segmentina haemisphaerula and Hippeutis cantort, the vector animals of Fasciolopsis buski, or in other words, one of the elements of the Hangchung Fasciolopsiasis nidus. Concerning the relationship between the vector animals and their environs, the present study involves the distribution of the snails, their seasonal dynamics, the relation between the average month temperature and the hatching rate of the eggs as observed in the laboratory, the living conditions of the snails including water, moisture, water vegetations, current rate, etc. The ecological study of the vector animals is useful to their eradication and thus the eradication of the nidus as a whole.