碩士 / 國立宜蘭大學 / 生物技術與動物科學系動物科學碩士班 / 107 / Lake Shenghu located in National Suao Maritime and Fisheries Vocational High School (NSMFVHS), is one of the important wetlands in Yilan County. However, the lake is not only being seriously invaded and covered by watermoss (Salvinia molesta) but also being through the habitat alternation in recent years. Therefore, the study mainly explores the possibility by using grass carp and tilapia for biological control on Salvinia molesta.
The study including three experiments was conducted in NSMFVHS. Experiment 1 investigated the food intake of the two fish sizes (bigger grass carp and smaller grass carp). The result showed the bigger grass carp having more food intake and higher survival rate than that of the smaller one. Experiment 2 explored whether if the freshness (regularly new replacement or regular complementary) of Salvinia molesta will affect the food intake of grass carp. The result showed no significant differences between the two groups of freshness. Experiment 3 examined the differences of food intake between the omnivorous and herbivorous fish i.e. tilapia and grass carp, of which the latter performed better than that of the former. Based on the overall investigations above, it can be suggested to apply the suitable size of grass carp for the biological control on Salvinia molesta under similar wetland conditions.
| Identifer | oai:union.ndltd.org:TW/107NIU00289002 |
| Date | January 2018 |
| Creators | WU,CHENG-WEI, 吳承威 |
| Contributors | CHEN,YUNG-SONG, 陳永松 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 46 |
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