碩士 / 國立高雄海洋科技大學 / 水產養殖研究所 / 100 / Caridina multidentata distributes from Japan, Taiwan to Madagascar.
In Taiwan, it can be discovered at low attitude areas in Northern, Northeast,
Eastern, Southern at low altitude area. In C.multidentata life history,
with a female hatching migration from the river to an estuary, larval development
in saltwater, and a return upriver migration by postlarvae
(amphidromous migration). It’s not easy to increase the population size.
Due to different and wan-wade influences. In this study measurements
were done on the temporal and spatial distribution of reproductive
C.multidentata in the Teng Stream, Taitung, Taiwan. Sampling of
C.multidentata for this study took place at six sites along the Teng Stream
for monthly a year (2010.12~2011.11). During these 12 months, 494 individuals
were captured. The ratio of gender is 1:3.52 (female : male
=140:354). Females (average carapace length (CL) = 8.43mm; maximum
size(CL) =9.59mm ) were significantly larger than males(average CL
=6.0mm; maximum size(CL) =7.94mm). The smallest mature size of female
was 6.52mm. Many of the pre hatching females (with stage
2-3embryos) were observed with pre spawning ovaries (ovarian stage
2-3). This shows females were produced more than one brood during a
breeding season. During the breeding season, females egg-carrying rate
were correlated positively with temperature.
| Identifer | oai:union.ndltd.org:TW/100NKIMT086003 |
| Date | January 2012 |
| Creators | Tsai,Ping-Ju, 蔡秉儒 |
| Contributors | Chu,Tah-Wei, 瞿大維 |
| 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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