TY - JOUR
T1 - Scale effects of MS-222 on a marine teleost, porgy Pagrus major
AU - Oikawa, Shin
AU - Takeda, Tatsusuke
AU - Itazawa, Yasuo
N1 - Funding Information:
This work was supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Sciencea nd Culture of Japan. We thank Professor C. Ki-tajima, Fisheries Laboratory of Kyushu University, Mr. N. Nakamura, former Director of the SagaP refectural SeaF arming Centre, and their staff for providing the fish and facilities for this study.
PY - 1994/4/1
Y1 - 1994/4/1
N2 - The relationship between the effective concentration (CE) of the anaesthetic MS-222 and body mass was examined at 20°C in porgy ranging in size from 0.00022 g (just after hatching) to 320 g (595 days old). CE was defined as the concentration which required 3-5 min to induce deep anaesthesia in the fish. Values of CE (ppm) increased monophasically with increasing body mass (W in g), following the equation CE = 79 W0.0549 (N = 30, r = 0.936 between log CE and log W). The recovery ratio (RR in %), i.e., the number of fish as a percentage which recovered after being placed back in ordinary seawater, varied depending on the developmental stage. RR was lowest in fish of around 0.01 g (30 days old), corresponding to the transitional stage between the post-larval and juvenile stage, whereas it was highest (nearly 100%) in the pro-larval stage (about 0.00023 g in size and 0-6 days of age).
AB - The relationship between the effective concentration (CE) of the anaesthetic MS-222 and body mass was examined at 20°C in porgy ranging in size from 0.00022 g (just after hatching) to 320 g (595 days old). CE was defined as the concentration which required 3-5 min to induce deep anaesthesia in the fish. Values of CE (ppm) increased monophasically with increasing body mass (W in g), following the equation CE = 79 W0.0549 (N = 30, r = 0.936 between log CE and log W). The recovery ratio (RR in %), i.e., the number of fish as a percentage which recovered after being placed back in ordinary seawater, varied depending on the developmental stage. RR was lowest in fish of around 0.01 g (30 days old), corresponding to the transitional stage between the post-larval and juvenile stage, whereas it was highest (nearly 100%) in the pro-larval stage (about 0.00023 g in size and 0-6 days of age).
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U2 - 10.1016/0044-8486(94)90271-2
DO - 10.1016/0044-8486(94)90271-2
M3 - Article
AN - SCOPUS:38149147289
SN - 0044-8486
VL - 121
SP - 369
EP - 379
JO - Aquaculture
JF - Aquaculture
IS - 4
ER -
