Effects of sudden changes in salinity on endogenous rhythms of the spotted sea bass Lateolabrax sp. SCIE SCOPUS

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Title
Effects of sudden changes in salinity on endogenous rhythms of the spotted sea bass Lateolabrax sp.
Author(s)
Kim, WS; Kim, JM; Kim, MS; Park, CW; Huh, HT
KIOST Author(s)
Kim, Min Suk(김민석)
Publication Year
1998-05
Abstract
The endogenous rhythm of oxygen consumption in juvenile spotted sea bass (Lateolabrax sp.) was measured to test the effects of sudden changes in salinity on the metabolic activity. Mean oxygen consumption rates of this euryhaline fish decreased by 13.5 to 16.0% and 25.3 to 36.4% when they were transferred from 31.5 to 15 parts per thousand seawater and to fresh water (0 parts per thousand), respectively. The maximum rate of oxygen consumption was observed between 18:00 and 19:00 hrs local time, 1 to 2 h before sunset, even though they were kept in constant darkness. The peaks of oxygen consumption occurred in 23.2- and 23.3-h intervals, which correspond with a circadian rhythm, as revealed by maximum entropy spectral analysis. A markedly weakened rhythm in oxygen consumption occurred from 8 to 10 d after onset of the experiments. This study indicates that spotted sea bass can withstand sudden drops in salinity from 31.5 parts per thousand, to fresh water, and yet maintain a regular though somewhat dampened endogenous rhythm of oxygen consumption.
ISSN
0025-3162
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/6264
DOI
10.1007/s002270050314
Bibliographic Citation
MARINE BIOLOGY, v.131, no.2, pp.219 - 225, 1998
Publisher
SPRINGER VERLAG
Subject
OXYGEN-CONSUMPTION RATE; DICENTRARCHUS-LABRAX; LEIOSTOMUS-XANTHURUS; ACCLIMATION; OSMOLALITY; RESPONSES; GROWTH; FISHES; BLOOD; WATER
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER VERLAG
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