碩士 / 國立嘉義大學 / 水產生物學系研究所 / 94 / Abstract
This investigation gathered fish sample by the casting nets way at Haomeiliao Nature Reserve, Chiayi County during May 2004 to April 2005. We colleted 1,316 individuals (64.50 kg as total biomass), belonging to 32 families, 67 species of mangrove fishes. The dominant families we collected here were Carangidae, Mugilidae, Clupeidae and Leiognathidae, and the dominant species were Perch herring (Nematalosa come), Largescale mullet (Liza macrolepis), Blacktip sardinella (Sardinella melanura), Shortnose ponyfish (Leiognathus brevirostris), Tilapia (Oreochromis sp. hybrid), Longarm mullet (Valamugil cunnesius), Blackbarred halfbeak (Hemiramphus dussumieri), Spotted catfish (Arius maculatus) and Hamilton's thryssa (Thryssa hamiltonii).
Nowadays, many researchers use feeding guilds as a unit to analysis fish community structure. The most dominant fishes in our investigation belonging to 13 families and 20 species, and then analyse the community structure of the whole year and every season, by the ecostastic software, Primer (v5.2.2). In our investigation we could mainly separate these dominant fishes by clustering for 5 feeding guilds: piscivores, detritivores, crustacivore, zooplanktonivore and omnivores. We found that some fish species may adapt their feeding tendency to seasonal transition. Then, we plotted k-dominance curve in cumulative mode, each for abundance and biomass of dominant fish species; it revealed this researching area is under non- or little-human-infected condition due to the fish ranking biomass is less than ranking abundance. Comparing our analysis of occuring fish species with other 5 mangrove areas of the west seashore of Taiwan (Jhuwei, Hsinfong, Jhunan, Chiku and Dapon-Bay) by the analysis, non-metric multi-dimensional scaling (MDS), we found that the species composition of mangrove fish at west seashore of Taiwan had a pattern of spatial change depending on latitude changing. Finally, most fish species here in our study were carnivores. We suggested that is due to the animal preys were not only variable and abundant, but also vulnerable here. Based on the feeding relations of fishes, a sketchy model of trophic level was constructed in Haomeiliao Nature Reserve, Chiayi County.
| Identifer | oai:union.ndltd.org:TW/094NCYU5613008 |
| Date | January 2006 |
| Creators | Chia-Hui Lin, 林家暉 |
| Contributors | Shih-Rong Kuo, 郭世榮 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 117 |
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