실뱀장어의 온도에 대한 민감성

Title
실뱀장어의 온도에 대한 민감성
Alternative Title
The sensitivity of glass eels to water temperature changes
Author(s)
김완수; 윤성진; 이태원
Publication Year
2003-10-15
Abstract
The oxygen consumption rate (OCR) of glass eels Anguilla japonica was measured to determine the effects of water temperature changes on their endogenous and exogenous rhythms. The glass eels were exposed to different water-temperature patterns during simulated 12-, 14-, and 24-h cycles. The OCR of wild glass eels, freshly collected from estuaries, exhibited a clear endogenous circatidal rhythm while kept in constant darkness and temperature (1 ± 0.1°C). However, if the temperature was variable, the glass eels OCR coincided with the gradually increasing water temperature (∆t = 1°C/12-h or 24-h) in the experimental chamber. This minor variation in water temperature (∆t = 1°C/12-h or 24-h) was significant enough to affect the rhythmicity of glass eels' OCR. When the glass eels were exposed to a cyclic increase or decrease in water temperature (0.5°C/14-h), the OCR peaks displayed a clear rhythmicity at 14-h intervals. The results indicate that glass eels' OCR is controlled not only by an endogenous circatidal rhythm, but also by exogenous rhythms related to small environmental changes, such as water temperature changes of as little as 0.5°C.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32162
Bibliographic Citation
North Pacific Marine Science Organization Twelfth Annual Meeting, pp.93, 2003
Publisher
North Pacific Marine Science Organization
Type
Conference
Language
English
Publisher
North Pacific Marine Science Organization
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse