猪巨吻棘头虫的中间宿主与人体感染的关系

INVESTIGATION ON INTERMEDIATE HOSTES OF MACRACANTHORHYNCHUS HIRU-DINACEUS WITH THE RELATION OF TRANSMIT DISEASE IN THE VILLAGE SONGBAI AND KOUGUAN, WULIAN COUNTY, SHANDONG PROVINCE

对五莲县松柏乡和叩官乡的猪巨吻棘头虫中间宿主与人体感染的关系进行了调查,并对捕获甲虫进行鉴定,结果发现松柏乡甲虫有天牛科(Cerambycidae)的大牙锯天牛(Dorysthenes paradoxus);丽金龟科(Rutelidae)的琉璃丽金龟(Popillia atrocoerlea)和豆蓝丽金龟(Popillia indiagonacea),其阳性率分别为5.68％,2.55％。叩官乡的甲虫有琉璃丽金龟、豆蓝丽金龟和蒙古丽金龟(Amonala mongolice),其感染率分别为16％,7.14％和0.3％。调查还表明人体猪巨吻棘头虫病的感染主要与揣食天牛有关。

In 1989-1990 the authors have investigated on the intermediate host of M. hirudinaceus with the relation of transmit disease. In the village Songbai and Kouguan, Dorysthenes paradoxus(Cerambycidae), Popillia atrocoerlea, P. indiagonacea and Anomala mongolica(Rutetidae) have investigated. All of these were dissected and the larvae of M. hirudinaceus(acanthella) were found in their bodies. It is the first discovery that P. atrocoerlea is the naturely intermediate host of the worm in China. In Songbai, the infective rate of the acanthella of M. hirudinaceus in D. paradoxuses is 14.13%(41/283), in P. atrocoerleas is 5.68%(17/300), in P. indiagonaceas is 2.55%(2/78); in Kouguan, in P. atrocoerleas is 16%(32/200), in P. indiagonaceas is 7. 31%(4/54), in A. mongolica is only 0.3%(1/336). In general, there is single larva in the body of D. paradoxus, some time there are as many 10 as larvae contained in a host. But there are 1-5 larvae in the body of beetles of Rutetieae . The acanthella is 3.95mm long by 1.85mm wide in D. paradoxus and 2.75mm long by 1.34mm wide in P. atrocoerlea with milky white in colour and sesame seed-likely shap, The proboscis with hooks is retracted into the sheeth. Human infection of M. hirudinaceus is chiefly due to the eating raw or half-raw D. paradoxus.