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摘要翻译：
背景：斑点叉尾鮰（Ictalurus pastertatus）在商业水产养殖和休闲渔业中都具有重要意义。关于密歇根州斑点叉尾鮰的长度-重量关系的公开数据很少。虽然没有公开或私人放养的记录，但斑点叉尾鮰在1984年至1995年间出现在戴安湖，并已发展成为一种优良的渔业。结果：NLLS回归得到参数估计b=3.2293,a=0.00522。改进的模型对指数b和长度估计（参数L1)的45.23cm产生了相同的估计。改进模型的不确定度和协方差估计较小，但相关系数均为r=0.995。LLS回归得到了不同的参数值a=0.01356和b=2.9726，相关系数较小，r=0.980。样品中的鲶鱼平均重量为标准重量的106.0%，Brown等人）鱼片产量与总重的线性回归（无斜率）表明，典型的鱼片产量为28.1%,r=0.989。结论：样本中大部分鱼类体重在标准体重以上，体重大于75百分位数。斑点叉尾鮰在黛安湖过得很好，种群数量与食物供应很匹配。管理层应努力维持目前的人口水平。在这种情况下，改进的长度-重量模型W(L)=(L/L1)^b比传统模型提供了更低的参数估计不确定性和更小的协方差。
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英文标题：
《Length, Weight, and Yield in Channel Catfish, Lake Diane, MI》
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作者：
Elizabeth Keenan, Sarah Warner, Ashley Crowe, and Michael Courtney
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最新提交年份：
2012
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分类信息：
一级分类：Quantitative Biology 数量生物学
二级分类：Other Quantitative Biology 其他定量生物学
分类描述：Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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英文摘要：
Background: Channel catfish (Ictalurus punctatus) are important to both commercial aquaculture and recreational fisheries. Little published data is available on length-weight relationships of channel catfish in Michigan. Though there is no record of public or private stocking, channel catfish appeared in Lake Diane between 1984 and 1995 and it has developed into an excellent fishery. Results: NLLS regression yields parameter estimates of b = 3.2293 and a = 0.00522. The improved model yields the same estimate for the exponent, b, and a length estimate (parameter L1) of 45.23 cm. Estimates of uncertainty and covariance are smaller for the improved model, but the correlation coefficient is r = 0.995 in both cases. LLS regression produced different parameter values, a = 0.01356 and b = 2.9726, and a smaller correlation coefficient, r = 0.980. On average, catfish in the sample weighed 106.0% of the standard weight, (Brown et al.) and the linear regression (no slope) of fillet yield vs. total weight suggests a typical fillet yield of 28.1% with r = 0.989. Conclusion: Most of the fish in the sample were above the standard weight, heavier than the 75th percentile for their length. Channel catfish are doing well in Lake Diane and the population is well matched to the food supply. Management should attempt to maintain current population levels. In this case, the improved length-weight model, W(L) = (L/L1)^b, provided lower uncertainties in parameter estimates and smaller covariance than the traditional model.
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PDF链接：
https://arxiv.org/pdf/1102.4623
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