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首页> 中文期刊> 《海洋渔业》 >笼具形状对选育合浦珠母贝幼贝生长的影响

笼具形状对选育合浦珠母贝幼贝生长的影响

         
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摘要

The effects of different shapes of cages on the growth of P. fucata juveniles were studied using offsprings reproduced by selected Sanya parent (♀) and Xuwen parent ( ) in August 2011. The shapes of cages included rectangular, cylindrical and hemispherical cages, with sizes of 20 cm×12 cm × 15 cm, radius (r) of 11. 5 cm x 15 cm ( H) , and radius of 15 cm, respectively. The culturing depth ranged from 2 m to 7 m underwater with 1 m interval in Xincun Bay, Iingshui County, Hainan Province. The numbers of the juvenile oysters were 74 ind./cage in rectangular cages, 102 ind. /cage in cylindrical cages, and 150 ind./cage in hemispherical cages. The density was 0.053 ind. cm-2 for all kinds of cages based on cage surface area. The results showed that the growth rates of shell length (SL) and body weight ( BW) reached the highest at the water depth of 4 m for rectangular cages, being 24.55% and 6.44% , respectively, significantly higher than those at the other water layers ( P < 0. 01). The highest growth rates of SL and BW appeared at 3 m deep for hemispherical cages, being 22. 55% and 5. 40% , respectively, significantly different from the other depths (P < 0. 01 ) , while appeared at 6 m depth for cylindrical cages, being 22. 46% and 5. 37% , respectively, significantly higher than the 3,5,7 m depth (P < 0. 01). There were no significant differences among the other groups. In addition, the heights of the cages also had impact on the growth of P. fucata juveniles for cylindrical and rectangular cages. The growth rates of shell height (SH) and BW got the highest at the height of 20 cm, being 24. 70% and 6. 20% , significantly different from those with 5, 10 and 15cm high cages ( P <0. 05 ) for cylindrical cages. Also the growth rate of SL was the better at the cage height of 10 cm for rectangular cages, but there was no significant difference from each other. The results suggested that the best growth performances could be obtained by using 11.5cm (r) ×20 cm (H) cylindrical cages or 20 cm (L) × 12 cm ( W) × 10 cm ( H) rectangular cages. In terms of cost, cylindrical cage was cheaper than rectangular cage.%2011年8月,以海南三亚亲贝(♀)×广东徐闻亲贝(♂ )构建的第一代选育合浦珠母贝(Pinctada fucata)群体为材料,研究长方形、圆柱形和半球形笼具形状在不同水深对合浦珠母贝幼贝(平均壳长1.4 cm)生长的影响.结果表明,长方形笼具在4 m水深时,幼贝的壳高和体重增长率最大,分别为24.55％和6.44％,显著高于其它水层(P＜0.01)；半球形笼具在3 m水深时,幼贝壳高和体重增长速度最大,分别为22.55％和5.40％,与其它水深的差异极显著(P＜0.01)；圆柱形笼具在6 m水深时,壳高和体重增长最快,增长率分别为22.46％和5.37％,显著高于3、5、7 m水深组(P＜0.01),而与其余深度组差异不显著.此外,圆柱形笼具的高对合浦珠母贝的生长也有影响,在3 m水层20 cm高的圆柱形笼具中贝壳高和体重增长速度最大(增长率分别为24.70％和6.20％),与5、10、15 cm高度组差异显著(P＜0.05)；而长方形笼具虽然10 cm高的笼具较好,但与其它各实验组差异并不显著(P＞0.05).综合来看,合浦珠母贝在3～4m水层用半径11.5 cm、高20 cm的圆柱形笼具或20 cm(长)×12 cm(宽)×10 cm(高)的长方形笼具养殖效果较好.但在制作成本方面,圆柱形笼具的成本低于长方形笼具.

著录项

  • 来源
    《海洋渔业》 |2012年第4期|417-421|共5页
  • 作者

    郝博飞; 黄桂菊; 刑孔武; 黎火金; 陈明强; 李有宁; 吴开畅; 喻达辉;

  • 作者单位

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

    上海海洋大学,上海201306;

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

    上海海洋大学,上海201306;

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

    农业部南海渔业资源开发利用重点实验室,中国水产科学研究院南海水产研究所,广州510300;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 动物形态学;
  • 关键词

    合浦珠母贝; 笼具形状; 养殖深度; 养殖密度;

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