| 日本沼虾和克氏原螯虾胃容量的研究 |
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| 引用本文： | 赵卫红,陈立侨,李二超.日本沼虾和克氏原螯虾胃容量的研究[J].湖北农业科学,2010,49(3). |
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| 作者姓名： | 赵卫红 陈立侨 李二超 |
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| 作者单位： | 1. 华东师范大学生命科学学院,上海,200062;盐城工学院化学与生物工程学院,江苏盐城,224003
2. 华东师范大学生命科学学院,上海,200062 |
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| 基金项目： | 国家"十一五"科技支撑计划项目课题，浙江省重大科技专项重大项目，浙江省重大科技攻关农业项目，苏北科技发展计划，盐城工学院2009科研项目 |
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| 摘 要： | 以体重0.672～4.827g的日本沼虾(Macrobrachium nipponense)和3.678～43.163g的克氏原螯虾(Procambarus clarkii)为试验对象,研究这两种虾的胃容量及其与体长、体重间的关系。结果表明,日本沼虾和克氏原螯虾胃容量随着体重和体长的增加而增加;将日本沼虾、雄性克氏原螯虾和雌性克氏原螯虾的胃容量(y)和体重(x)进行回归分析,分别得方程式:y=0.021 5x+0.006 5(r2=0.948 5),y=0.044 7x-0.008 5(r2=0.964 8),y=0.043 6x+0.0519(r2=0.978 7);3.009～4.827 g的日本沼虾比胃容量显著小于0.672～2.811g的个体,12.967～42.071g的雄性克氏原螯虾比胃容量显著小于3.678～9.754 g的个体,不同规格的雌性克氏原螯虾比胃容量差异不显著。
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| 关 键 词： | 日本沼虾 克氏原螯虾 胃容量 |
Stomach Volumes of Macrobrachium nipponense and Procambarus clarkii |
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| Abstract: | The stomach volumes of oriental river prawn, Macrobrachium nipponense (body weight ranging from 0.672～4.827g),and crayfish, Procambaurs clarkii (body weight ranging from 3.678～43.163g) were studied under indoor condition. The bodyweights and lengths were measured after the shrimp was force-fed to slight excess of satiation with live earthworm after beingstarvated for 7 days. Full filling stomach weights were measured. The results showed that the stomach volumes of both M.nipponense and P. clarkii increased with their body weight and length, and the linear regression equations between bodyweight and stomach volume in M. nipponense, male P. clarkii and female P. clarkii were y=0.021 51x+0.006 5 (r2=0.9485), y=0.044 7x-0.008 5 (r~2=0.964 8),r=0.043 6x+0.051 9 (r~2=0.978 7), respectively, where x was body weight, and y was stomachvolume of the shrimp, and tended to decrease with shrimp grew, and significant difference was observed between the juve-nile shrimps and adult ones in both M. nipponense and male P. clarkii, while no significant difference was found in allfemale P. clarkii. Combined, these results indicated that food quantity to body weight ratios in oriental river prawn andcrayfish were decreased with the growth. |
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| Keywords: | Macrobrachium nipponense Procambaurs clarkii stomach volume |
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