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题名: Conversion methods of freshwater snail tissue dry mass and ash free dry mass
作者: Zhao Wei-hua (zwh820305zwh@163.com) ; Wang Hai-jun ; Wang Hong-zhu (wanghz@ihb.ac.cn) ; Liu Xue-qin
通讯作者: Zhao Wei-hua ; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
刊名: Yingyong Shengtai Xuebao
发表日期: 2009
卷: 20, 期:6, 页:1452-1458
收录类别: 其他
英文摘要: Mollusk biomass is usually expressed as wet mass with shell, but this expression fails to represent real biomass due to the high calcium carbonate content in shells. Tissue dry mass and ash free dry mass are relatively close to real biomass. However, the determination process of these two parameters is very complicated, and thus, it is necessary to establish simple and practical conversion methods for these two parameters. A total of six taxa of freshwater snails (Bellamya, sp., Alocinma longicornis, Parafossarulus striatulus, Parafossarulus eximius, Semisulcospira cancellata, and Radix sp.) common in the Yangtze Basin were selected to explore the relations of their five shell dimension parameters, dry and wet mass with shells with their tissue dry mass and ash free dry mass. The regressions of the tissue dry mass and ash free dry mass with the five shell dimension parameters were all exponential (y = ax(b)). Among them, shell width and shell length were more precise ( the average percentage error between observed and predicted value being 22.0% and 22.5%, respectively) than the other three parameters in the conversion of dry mass. Wet mass with shell could be directly converted to tissue dry mass and ash free dry mass, with an average percentage error of 21.7%. According to the essence of definition and the errors of conversion, ash free dry mass would be the optimum parameter to express snail biomass.
ISSN号: 1001-9332
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/18667
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Zhao Wei-hua (zwh820305zwh@163.com) ; Wang Hai-jun; Wang Hong-zhu (wanghz@ihb.ac.cn) ; Liu Xue-qin.Conversion methods of freshwater snail tissue dry mass and ash free dry mass,Yingyong Shengtai Xuebao,2009,20(6):1452-1458
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文件名: Conversion methods of freshwater snail tissue dry mass and ash free dry mass.pdf
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