碩士 / 海洋大學 / 海洋生物研究所 / 96 / Abstract
Since the enrichment resources of estuary for the larval fishes, a variety of fishes often used the estuary as their nursing ground leading the high biodiversity in the estuary. To understand tempo-spatial changes of larval fish community and their life history at Lang-Yang estuary, the larval fishes were sampled at seven monitoring stations by using fyke net and light trap during 2004-2006.
A total of 26,022 larvae and juveniles representing 7 orders, 16 families, 23 genera, 43 species were identified with both morphology and mtDNA sequencing. The most dominant species of gobies in this estuary is R. maculfasciatus (67.86%). The second is Sicyopterus japonicus (12.8%), then, Mugilidae spp. (9%) and Anguilla marmorata (4.7%). Overall, the dominant group is gobioid fishes in the Lang-Yang estuary. Species richness and diversities of larval and juvenile fishes are fluctuated. The abundance reached peaks in the April. The species richness reached the highest in summer. Taxa compositions are different among sampling sites from river mouth inwards to upstream of the estuary.
By the employment of DNA analysis (D-loop and COI), 10 gobioid species could be recognized including: Awaous melanocephalus, Calamiana sp., Eleotris acanthopoma, E. fusca, Oligolepis acutipennis, Periophthalmus modestus, Rhinogobius maculafasciatus, Scartelaos histophorus, Sicyopterus japonicus, S. lagocephalus and Taenioides cirratus.
The congruent results of species identification are between these two genes. The COI sequence seems to be simpler for getting process.
| Identifer | oai:union.ndltd.org:TW/096NTOU5270002 |
| Date | January 2007 |
| Creators | Chia-Hung Shih, 施佳宏 |
| Contributors | Kwong-Tsao Shao, I-Shiung Chen, 邵廣昭, 陳義雄 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 172 |
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