昆虫背脈管における収縮・拡張活動(脈動)の伝ぱ

概要

論文の詳細を見る
On the assumption that the pulsation of the dorsal vessel was a movement of elastic body, the cardiograms were recorded by means of FRANK'S method. The transmission velocity of pulsation along the dorsal vessel was measured. The contracting and expanding movement of vassel did not occur irregularly at various parts in the dorsal vessel. During the duration of the normal pulsation, the contracting movement began at the posterior segment and moved successively toward the anterior segments of the dorsal vessel. Following the contracting movement, the expanding one occurred in the same order. The duration of the expanding movement was longer than that of the contracting one in the heart, and vice versa in the aorta. The transmission velocity of pulsation along the dorsal vessel was 1.2-7.6cm per sec in average, and higher in larvae as compared with in pupae and adults. The velocity during the duration of the normal pulsation was higher than that during the reverse one. The pulse-frequency was correlated with the duration of a pause of expanding movement. The rest phase was obscured with the rapid pulse-frequency.
日本応用動物昆虫学会の論文
1975-12-25