福建省鼠类感染广州管圆线虫调查

目的调查福建省鼠类自然感染广州管圆线虫情况,为开展预防控制该病提供依据。方法采用笼捕法。每d将捕获的鼠类,以村为单位,进行逐一编号、鉴定鼠种、♀、♂和成、幼鼠后,取出心、肺,置生理盐水玻皿内将其撕碎,发现虫体再逐条取出置另一生理盐水玻皿内,计算成虫条数和鉴别♀♂。结果共调查9个地、市23个县(市、区)35乡(镇)67个村,除龙岩市的上杭县和福州市辖平潭(海岛县)未发现鼠类感染外,其余21个县(市、区)均发现感染。共检查鼠类4890只,发现感染鼠434只,感染率为8.90%。其中,以褐家鼠感染率最高,为17.75%(315/1775);黄胸鼠其次为6.21%(49/789);臭鼩鼱和小家鼠较低仅为2.81%(29/1032)与2.52%(3/119)(χ2=185.06,P<0.001)。不同鼠龄的感染率,成鼠为21.37%(222/1039),远远高于幼鼠的11.11%(30/270)(χ2=14.50,P<0.05)。结论福建鼠类感染广州管圆线虫已遍及全省9个市和绝大多数的县、市、区的农村和城镇周围。其感染鼠的分布与当地福寿螺的分布一致。

Investigation on Angiostrongylus cantonensis infection in rodents in Fujian Province

The purpose of this study was to investigate the natural infection of Angiostrongylus cantonensis （A. cantonensis） in rodents in Fujian Province and provide more scientific evidences for control and prevention. ？ Rats captured with cages were numbered, and the species, gender and maturity were identified in each village every day. Rats＇ hearts and lungs were taken out and soaked into physiological saline solution to tear to pieces. The detected A. cantonensis were put into physiological saline solution in other glassware then the number and gender were identified. This investigation was conducted in 67 villages in 35 towns, covering 23 counties in 9 cities and regions. Except Shanghang County in Longyan city and Pingtan County in Fuzhou city, rodents infected with A. cantonensis was found in 21 counties. Of 4 890 rats were examined and 434 infected rats were identified with an infection rate of 8.90%. Rattus norvegicus had the highest infection rate of 17.75% （315/1 775）, following by Rattus flavipectus with an infection rate of 6.21% （49/789）. Additionally, the infection rates of the Musk shrew and Mus musculus were 2.81% （29/1 032） and 2.52%（3/119）, respectively （Х^2 =185.06, P〈0. 001）. Moreover, the infection rate of adult rats （21.3%） was much higher than that of immature rats （11.11%） （Х^2 =14.50, P〈0.05）. These results indicated that the A. cantonensis infection of rodents has covered most area in Fujian Province and the geographical distribution of infected rats was similar with that of Arnpullaria gigas. KEY WORDS： rodents; Angiostrongylus cantonensis infection