碩士 / 國立宜蘭大學 / 生物機電工程學系碩士班 / 107 / Climate change in recent years is a formidable challenge for Aquaculture.
Macrobrachium rosenbergii is a high-value aquatic product. It is a poikilotherm, so the
change in ambient temperature has a direct impact on the physiological status of
Macrobrachium rosenbergii, this is also related to the optimal temperature range for it to
survive and the tolerance limits. This study will measure the heart rate and the swinging rate
of scaphognathite in the freely moving Macrobrachium rosenbergii at different temperature
ranges, to understand the relationship between temperature changes and their physiological
regulation. The ECG signals were get with an electrode embedded in the posterior edge of the
heart and measuring the swing of scaphognathite by using an electrode embedded in the
operculum. The experiment was divided into two parts, namely the temperature rising
experiment and the cooling experiment. The Macrobrachium rosenbergii continued to heat up
at 23 ° C and died (about 38 ° C), and after 28 ° C rest, the temperature was continuously
cooled to death (about 10 ° C). The results showed that the heart rate and respiration rate
change was linearly correlated with the increase/decrease of temperature. The limitation of
heart rate was the rate at 33°C degrees and the respiration rate was the rate at 37°C degrees;
The extreme low lethal temperature is 10°C degrees for heart rate. The high temperature is
estimated because the heart rate increases to the limit and cannot effectively supply the blood
required for metabolism, resulting in death at high temperatures. Low temperatures may result
in systemic hypoxia and death due to slow heart rate and breathing.
| Identifer | oai:union.ndltd.org:TW/107NIU00730007 |
| Date | January 2019 |
| Creators | Zi-Yan Chou, 周子晏 |
| Contributors | Meng-Li Tsai, 蔡孟利 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 36 |
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