碩士 / 國立高雄海洋科技大學 / 漁業生產與管理研究所 / 95 / Reproductive biology of the myctophids (Benthoscopelus pterotum) was described based on 2,057 specimens(1,160 females and 897 males)caught by trawlers in the coastal waters off southwestern Taiwan from November 2005 to October 2006. B. pterotum spawned throughout the year with reproduction activity peaking in March and August-November. The sex ratio (female/total) of all specimens was 0.56 (1,160/2,057), which was significantly different from 0.5 with χ2 test. The estimated size at first maturity for female and male were 30.77 mm and 31.36 mm fork length, respectively. The batch fecundity of this species estimated a range from 273 to 692 eggs, with a mean (standard deviation；SD) as 470.39 (88.08) eggs. Batch fecundity increased with increasing gonad weight, and a linear relationship also existed between batch fecundity and body weight. The linear relationship were estimated to be BF＝453.71×BW+172.13.
| Identifer | oai:union.ndltd.org:TW/095NKIM8451006 |
| Date | January 2007 |
| Creators | Shiang-Yi Shiu, 許向儀 |
| Contributors | Wann-Duen Chiou, 邱萬敦 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 77 |
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