碩士 / 國立臺灣海洋大學 / 水產養殖學系 / 98 / The goal of this study was to investigate how the visual systems of different moray eels evolved to cope with the selection pressure imposed on them by the different photic environments where they reside. Four moray eel species inhabited diverse habitats were selected to examine and compare their visual characteristics, including: Rhinomuraena quaesita (depth: < 57 m; habitat: reef-associated), Gymnothorax favagineus (depth: < 45 m; habitat: coral reef), G. reticularis (depth: < 200 m; habitat: sandy gravel bottom) and Strophidon sathete (depth: < 300 m; habitat: muddy ocean bottoms). The maximal absorbance values (λmax) examined by the use of microspectrophotometer (MSP) showed a close correlation between the absorption spectra and the characteristics of the light environment of a specific species where it lives. The histological studies on the morphological characteristics of moray eels’ retina revealed a duplex retina composition which is embedded with rod and single cone cells. The retinal structure data also revealed that not all moral eels should be regarded as nocturnal species as previously thought.
| Identifer | oai:union.ndltd.org:TW/098NTOU5086088 |
| Date | January 2010 |
| Creators | Meng-Yun Tang, 唐孟筠 |
| Contributors | Hong-Young Yan, Hong-Ming Chen, 嚴宏洋, 陳鴻鳴 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 38 |
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