碩士 / 國立臺灣大學 / 海洋研究所 / 99 / Otolith is a metabolically inert calcium carbonate that has been used to study the life history of fish. In this study, we investigate the life histories of 16 species of deep-sea demersal fishes, which were collected in the Pacific off north-eastern Taiwan and northern South China Sea by examining otolith microstructures, stable isotopic and chemical compositions. Otolith δ18O profiles suggested two major life history patterns; some species had ontogenetic vertical migration and some species were non-migrators. Vertical migrations were found in oviparous Synaphobranchidae, Halosauridae, Macrouridae, Ophidiidae and viviparous Barathronus maculates but with different migratory distances and timing, although they all had pelagic larvae. On the other hand, with demersal larvae, Alepocephalidae and Hoplostethus mwlanopterus spent most of their time on similar depths from larvae to adults. Otolith δ13C profiles suggested that fishes with longer vertical migration distance had higher metabolic rate in their early life-history stages than the later stages. However, the metabolic rate did not varied for the fishes living in the certain depth from larvae to adults.
Life history patterns of deep-sea demersal fishes varied among different taxonomic groups and habitat depths. The results were comparable to previous studies. Different life histories indicated different adaptations or life strategies to the deep-sea environment.
| Identifer | oai:union.ndltd.org:TW/099NTU05279014 |
| Date | January 2011 |
| Creators | Hsien-Yung Lin, 林先詠 |
| Contributors | 蕭仁傑 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 104 |
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