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題 名 | The Estimation of Joint Length Frequency of Lizard Fish (Saurida undosquamis) Caught from the Southern Taiwan Strait using the Stratified Random Sampling Method=臺灣海峽南部產正蜥魚市場規格別漁獲物聯合體長頻度的估計 |
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作 者 | 李英周; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 21:1 1994.03[民83.03] |
頁 次 | 頁57-68 |
分類號 | 439.2 |
關鍵詞 | 正蜥魚; 聯合體長頻度; 臺灣海峽; 分層隨機取樣法; Saurida undosquamis; Joint length frequency; Taiwan strait; Stratified random sampling method; |
語 文 | 英文(English) |
英文摘要 | The specimens used in this study were sampled monthly at Kaohsiung Gusan fish market from the landings of the baby trawlers that operated in the southern Taiwan Strait during 1992. It is assumed that each sampled vessel is a random sample. According to the different size of lizard fish landings, there have three strata adopted. The specimens are sampled randomly from each stratum using the stratified random sampling method. Then we compute the joint length frequency of lizard fish, Saurida undosquamis, when one year is chosen as one unit of time. The results are as follows: S. undosquamis, S. tumbil, S. elongates, and S. gracilis are four major species in this area. The formatted goods of lizard fish show that large fish are loaded in large box, median fish in median box, and mixed fish (combined large and median fish) in median box indeed. The ranges of fork length for large, median and mixed boxes are 26.5cm-49.2cm, 15.0cm-48.9cm, and 22.0cm-48.9cm respectively. The means of fork length for large, median and mixed boxes are 35.15cm, 24.85cm and 32.10cm, respectively. The estimated total boxes of S. undosquamis in the whole year are 4,737 boxes, and the estimated total boxes of large, median, and mixed size are 783.50, 2671.19 and 1,282.31 boxes. The joint length frequency of S. undosqamis is computed from these three length frequencies and their estimated total boxes of the whole year. It distribution is from 15.0cm to 49.2cm, mean 28.33cm and standard error 7.04cm. # 330 0$a本研究於1992年期間,按月至高雄鼓山魚市場採集台灣海峽南部作業之小型拖 網漁船狗母魚漁獲物。同時調查該採樣船之各種規格別的狗母魚卸魚箱數,及全年本海區 狗母魚總卸魚量。在假設每一採樣船均為逢機樣本船,並利用分層隨機取樣法隨機採取樣 本船中之各種規格別的狗母魚各一箱,在時間單位訂為一年的情況下分析狗母魚中正晰魚 的聯合體長分布。結果如下: 本海區狗母魚常見之種類有正晰魚(Saurida undosquamis)、錦鱗蜥魚(S﹒tumbil)、 長晰魚(S. elongatus)、及小晰魚(S.gracilis)四種。魚市場上係依照狗母魚體長的大小 區分為大箱、中箱、與混合箱三類漁獲物,而且大魚確實裝在大箱中,中魚裝在中箱中, 混合魚裝在混合箱中。大、中、與混合箱中之正晰魚的體長範圍固分別為26.5 cm-49.2 cm ,l5.O cm-48.g cm及22.0-48.9 cm;平均體長分別為35.l5 cm,24.85 cm及32.1O cm。狗 母魚全年總卸魚箱數(4737箱),按照樣本船所卸下之大、中、與混合箱的比率值來估計其 全年的卸魚箱數,分別為783.50, 2,671.19,及1,282.31箱。聯合體長頻度係由大、中、 與混合箱之體長頻度經全年卸魚箱數加權後所估算而得。該頻度之體長範圍為15.O cm- 49.2 cm,平均體長為28.33 cm,標準機差為7.04 cm。 |
本系統中英文摘要資訊取自各篇刊載內容。