中国南方不同品系福寿螺对广州管圆线虫易感性的研究

Susceptibility for different varieties of Pomacea canaliculata to Angiostrongylus cantonensis in South China

目的本实验室前期的研究根据福寿螺外壳及软组织特点将其分为3类:黑色福寿螺、黄色福寿螺、灰色福寿螺。本实验通过对三类福寿螺对广州管圆线虫易感性进行研究,期望为广州管圆线虫病的防治提供证据。分别使用低剂量(1000条L1/只)和高剂量(4000条L1/只)的广州管圆线虫感染三类福寿螺以观察其易感性,结果发现高剂量感染组中,黄色福寿螺感染率低于灰色福寿螺(P<0.05)。黄色福寿螺对广州管圆线虫的易感性相对较低,这可能是黄色福寿螺在中国多个省份占优势的一个原因。

Our previous research showed based on the characteristics of its external shell and its soft part,P.canaliculata could be divided into 3 types： black P.canaliculata,yellow P.canaliculata,and grey P.canaliculata.This study was aimed to analyze the susceptibility for different varieties of P.canaliculata to A.cantonensis,expecting to provide evidence in the treatment of angiostrongyliasis.Low and high doses of A.cantonensis were used to infect the three kinds of P.canaliculata（1000 and 4000 L1 per snail respectively）.The results showed that in high dose infection group,the infection rate of yellow P.canaliculata was lower than that of grey ones＇（P0.05）.Yellow P.canaliculata showed lower susceptibility to A.cantonensis,which was possibly one of the reasons for their superior presence in many parts of China at present.