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アコヤガイと環境水の流速との関係


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Title: アコヤガイと環境水の流速との関係
Other Titles: Relation between Pearl-Oysters (Pteria martensi) and the Current-Velocity of the Environmental Waters
Authors: 宮内, 徹夫 / 入江, 春彦
Authors (alternative): Miyauchi, Tetsuo / Irie, Haruhiko
Issue Date: Oct-1965
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.19, pp.56-64; 1965
Abstract: Studies were carried during the period from late fall to early winter, 1964 to elucidate the relation between the physiological activity of pearl oysters and the current velocity of the environmental waters where they live, especially from the view point of the quantity of excrement, regeneration power of shell-edge and activity of shell-opening and shutting. Though there are some difference according to specimens used and the days of experiment, results obtained are, in general, as follows: 1. The quantity of excrement was the largest at the velocity of 15cm/sec. 2. The regeneration of shell-edge was the most active at the velocity of 12cm/sec. 3. There was seen a stable motion of shell-opening and -shutting at the velocity of 10cm/sec. From the results mentioned above, we assume that the physiological activity of pearl oysters are the most vigorous at the current-velocity of 10-15cm/sec. / 糞量,貝殻形成力および貝殻運動から,アコヤガイと環境水の流速との関係をしらべた. 1)個体差及び日差が多少みられたが,全般的な傾向として糞量は15cm/secで最大を示し,その前後で順次低下する. 2)「はさき」の形成量から貝殼形成力を調べた結果は,個体差もあるが,12cm/secで最大値を示し,その前後では低下する傾向がある. 3)貝殻運動はまだ調査例が少なく,結論を出すまでには至っていないが,その一例からは10cm/secで開閉の振幅の大きい頻度の少ない安定した貝殻運動の状態がみられる. 以上の結果から,10~15cm/sec程度がアコヤガイの生活器能を活発にする流速であると推定した.
URI: http://hdl.handle.net/10069/31540
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第19号

Citable URI : http://hdl.handle.net/10069/31540

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