ウミサボテンCavernularia obesa Valenciennesの日週期活動 : XIII.体液中のアンモニア量の週期的変化

概要

論文の詳細を見る
Mori ('50) has shown in the previous works that some of the internal physiological states of the sea-pen, such as H-ion concentration, CO_2 content, glycogen content, or O_2 consumption show cyclic changes synchronous with rhythmic activities, and pointed out importance to study on relations among environmental periodicities, behavior rhythms and internal physiological cycles. This is the report which follows the above direction, dealing with the change of ammonium content in the body fluid of the sea-pen. Because ammonium ia one of the most important metabolic products of animals, we supposed there might be some definite correlation between the change of its content and the behavior of the sea-pen. The results obtained are as follows (Fig. 1). (1) The sea-pen begins to expand on the sand at about the sunset, and about 2 hours later body length attains maximum. Meanwhile the whole amount of ammonium contained in the body fluid increases gradually, but its concentration per unit volume of the fluid decreases gradually. (2) The sea-pen stays expanded through the night, and the large amount of ammonium in the body fluid remains nearly constant, whereas its concentration per unit volume of the body fluid remains low. (3) During the daytime, the sea-pen stays contracted beneath the sand, and the total amount of ammonium in the body fluid remains scanty, whereas its concentration per unit volume of the body fluid remains high. (4) Changes of the total amount of ammonium contained in the body fluid and its concentration take place more quickly at dawn than at dusk, which correspond to the state of expansion and contraction of the animal body as is shown in Fig. 1.
社団法人日本動物学会の論文
1956-10-15

ウミサボテンCavernularia obesa Valenciennesの日週期活動 : XIII.体液中のアンモニア量の週期的変化

スポンサーリンク

概要

著者

関連論文

スポンサーリンク