Bias in Estimating Growth Parameters by Fabens' Mark-Recapture Procedure When Coefficient of Variation in Length Is Constant

當體長的變異系數為常數時以費氏標幟放流程序估計成長參數的偏差

陳瑤湖(Yew-Hu Chien) ； 雷惠民(Whay-Ming Ray)

《臺灣水產學會刊》 22卷1期 (1995/03) Pp. 23-40

https://doi.org/10.29822/JFST.199503.0003

摘要

本研究判讀台灣海峽南部產正蜥魚的脊椎骨輪紋數以建立1992年與1993年之年齡一體長轉換檢索表，再利用年齡—體長檢索反覆運算法(IALK)分析1992年與1993年的全年聯合體長頻度以估計該魚種之年齡組成。結果顯示在高R^(2)値之下，1992年有十個年齡群（0～9歲），其主要漁獲年齡爲2歲；而1993年有九個年齡群（0～8歲），其主要漁獲年齡則出現在3歲。

關鍵字

費氏方程式 ； 范氏方程式 ； 標幟放流 ； 變異系數

並列摘要

The demersal lizard fish widely distribute from the sub-tropical area to the tropicalarea.They include four major species in the Southern Taiwan Strait,i.e.,Saurida undos-quamis,S.tumbil,S.elongata,and S.gracilis.Among them,the S.undosquamis occupies67.15% of the lizard catch in gross weight.The specimens used in this study were sampledmonthly from the landings of the baby trawlers that operated in the Southern Taiwan Straitfrom May 1992 to December 1993 at Kaohsiung Gusan Fish Market.The vertebra agecharacter was adopted to be ring-read.The age compositions in 1992 and 1993 were estimatedfrom the joint length frequency data and the observed age-length key tables using the iterativeage-length key algorithm(IALK).The results are as follows:There had 10 age groups from age 0 to age 9 in 1992 and 9 age groups from age0 to age 8 in 1993.The major catch group appeared at age 2 in 1992 and age 3 in 1993.The high R^(2)values indicate that the results might be credible,and that the IALK couldbe a reliable method.

並列關鍵字

Fabens' Equation ； Von Bertalanffy Equation ； Mark-Recapture ； Coefficient of Variation