| 摘要: |
| 于2011年10月—2012年4月选择同一批次的墨西哥湾扇贝(Argopecten irradians concentricus)新品系贝苗, 采用大板笼和小板笼对该贝类进行中间培育和养成实验, 研究了不同养殖密度对该贝类生长和存活的影响, 以及养成期养殖密度与经济效益的关系。结果表明, 在中培阶段, 随着养殖密度的升高, 壳高、体质量、壳高相对生长率、体质量相对生长率、日增壳高、日增体质量和存活率均呈下降趋势, 方差分析表明, 养殖密度对该贝存活和生长参数产生显著影响(P<0.05)。Duncan法多重比较分析显示, 中培阶段大板笼适宜的养殖密度为180个/层(壳高30.93mm, 存活率91.00%), 小板笼适宜的养殖密度为120个/层(壳高30.84mm, 存活率91.40%)。在养成阶段, 随着养殖密度的升高, 存活率、出肉率、及壳高和体质量的生长参数呈下降趋势, 方差分析表明, 养殖密度对墨西哥湾扇贝存活率、出肉率和生长参数产生显著影响(P<0.05)。大板笼养殖密度60个/层时, 壳高42.81mm、存活率86.33%、出肉率16.75%, 小板笼养殖密度50个/层时, 壳高42.35mm、存活率84.21%、出肉率16.91%。养成期经济效益分析表明, 随着扇贝养殖密度的升高, 养殖笼单层产量、产值和收益均呈现峰值变化规律。大板笼养殖密度为60个/层时, 产量、产值和收益均达最大值, 分别为177.17g/层、5.03元/层和2.33元/层, 小板笼养殖密度为50个/层时, 产量、产值和收益均取得最大值, 分别为153.15g/层、4.48元/层和2.27元/层。经多重比较不同养殖密度下扇贝生长和存活的差异, 以及分析养殖密度与经济效益的关系, 提出养成期大板笼适宜的养殖密度为60个/层, 小板笼适宜的养殖密度为50个/层。 |
| 关键词: 墨西哥湾扇贝 新品系 养殖密度 生长 存活 经济效益 |
| DOI：10.11693/hyhz20130306002 |
| 分类号: |
| 基金项目:广东省科技厅产学研项目, 2009B090300232 号; 广东省农业科技成果转化资金项目, 2012NL050 号; 广东省教育厅项目, GCZX-A0909号。 |
附件 |
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| CULTURED DENSITY OF NEW ARGOPECTEN IRRADIANS CONCENTRICUS LINE IN NURSERY AND ADULT CULTURE STAGE |
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LI Zhi-Min1, LIU Zhi-Gang1, LIUFU Shao-Mei2, ZHONG Yi-Guang2
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1.Fisheries College of Guangdong Ocean University;2.Zhanjiang Silver Wave MarineBiotechnology Company Ltd.
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| Abstract: |
| From Oct. 2011 to Apr. 2012, we conducted experiments on nursery culture and adult culture for new Argopecten irradians concentricusline with the same batch of juveniles in bothlarge and small plate cages to study the effects of stocking density on growth and survival of this species and its relationship with the economic return. Statistic results show that during nursery culture phase, growth performance was the best in density of 180 ind/layer in large plate cage (shell height 30.93mm, survival rate 91.00%) or 120 ind/layer in small plate cage (shell height 30.84mm, survival rate
91.40%); while during the adult culture phase, the most suitable density was 60 ind/layer in large plate cage or 50 ind/layer in small plate cage, for best economic returns. |
| Key words: Argopecten irradians concentricus new line cultured density growth survival economic benefits |
