アコヤガイの生理的研究-I : 心臓搏動に対する稀釋海水の影響

概要

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The heart heat of pearl oysters grows feeble hastily in the diluted sea water of 1, 0030 specific gravity, and pulsated at least for 5-6 hours in the salinity of 1, 0040 sp. gr., while in the sp. gr. from 1, OO50 to 1, 0070, it is ascertained that the heat can move 24 hours over. On the experiment of survival time of each shell in the various salinities of sea water, some which, were in the sp. gr. of 1, 0070, opened by the loss of their activities after 39 hours and others did not open which were in more diluted sea water in such cases as of sp. gr. of 1, 0030 and 1, 0050 in the same conditions. Therefore, these experiments exhibit no coincidence with each other. From these experiments, it is concluded that the heart pulsation shows simply or directly its activity in the diluted sea water, while many other physiological conditions of the individual pearl oysters take part in the survivality of the shell from these facts. It is supposed that they are possible to live over 39 hours even in the diluted sea water in such cases of sp. gr. of 1, 0050 to 1, 0030.
公益社団法人日本水産学会の論文