長崎市内における犬糸状虫の浸淫状況と伝搬蚊に関する研究 : 4.長崎産シナハマダラカとキンイロヤプカの犬フィラリア幼虫に対する感受性について

概要

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Laboratory experiments were made to determine the susceptibility of the females of two common mosquitoes, Anopheles sinensis and Aedes vexans nipponii, to the larvae of Dirofilaria immitis in Nagasaki City. In infected Anopheles sinensis the rate of microfilariae discharged in their droppings is rather high, but the mortality of the mosquitoes due to the infection is very low and a great part of the larvae entering the Malpighian tubes complete the development, and accordingly, the experimental infection rate with the mature larvae is considerably high. On the other hand, in Aedes vexans nipponii the rate of microfilariae discharged in droppings is low, but about a half of the larvae having entered the Malpighian tubes of the mosquitoes are killed in the early stages of the development, therefore the experimental infection rate with the mature larvae is considerably low. Moreover, when Ae, vex. nipponii had been fed on high-density microfilaria carriers, there was observed, in the first few days after infective feed, a high mortality of the mosquitoes due to the destruction of the malpighian tubes by the development of a great number of microfilariae.
長崎大学熱帯医学研究所,Institute of Tropical Medicine, Nagasaki Universityの論文
1973-06-30