碩士 / 國立臺灣海洋大學 / 海洋生物研究所 / 101 / Kueishantao Island is located off the northeastern coast of Taiwan. Its surroundings contain over 50 shallow hydrothermal vents where benthic crabs Xenograpsus testudinatus are present in high population density. The present study was aimed to investigate the relationship between width, length and weight in each sex of adult individuals of X. testudinatus. Crabs were randomly selected from samples obtained with three different kinds of traps located at three different distances from the vents, during cruises on August 14th ,September 6th 2011, May 15th 2012 and September 11th 2012. A total of 3148 individuals, including 2256 males and 892 females, were examined for their body weight, length of pincer and width of carapace. Males weighted significantly more than females. Similarly, significant sex differences were noted in both the length of pincer and the width of carapace, with males having longer pincer and wider carapace. Pearson’s correlation showed significant and positive correlations between body weight, width of carapace and length of pincer in male and female individuals respectively. In conclusion, we found relationships between pincer length, body weight and carapace width by using three kinds of traps and three sampling distances.
| Identifer | oai:union.ndltd.org:TW/101NTOU5270003 |
| Date | January 2013 |
| Creators | Pin-Yi Yu, 余品毅 |
| Contributors | Jiang-Shiou Hwang, 黃將修 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 78 |
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