...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquaculture >The effect of growing level and growing method on winter mortality, Mikrocytos roughleyi, in diploid and triploid Sydney rock oysters, Saccostrea glomerata.
【24h】

The effect of growing level and growing method on winter mortality, Mikrocytos roughleyi, in diploid and triploid Sydney rock oysters, Saccostrea glomerata.

机译：生长水平和生长方法对二倍体和三倍体雪梨牡蛎，Saccostrea glomerata冬季死亡率，Mikrocytos rawleyi的影响。

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of growing height on mortality of Sydney rock oysters (Saccostrea glomerata) caused by Australian winter mortality (caused by Mikrocytos roughleyi) was evaluated at a commercial intertidal site on the Georges River, New South Wales (NSW),Australia. The mortality level of 35.1±8.4% recorded at normal growing height fell to 9.3±0.9% when oysters were cultured 300-mm higher, and increased to 52.4±0.2% when they were grown 300-mm lower in the tidal range. No significant growth penalty was evident at the higher growing level, and no relationship was discerned between the mortalities at different growing levels and either glycogen content or condition index. The concern among oyster farmers, that M. roughleyi may cause higher mortality levels among single seed diploid and triploid S. glomerata grown on trays, compared with the same oysters grown on sticks, was not supported in a trial at 2 intertidal growing levels at Merimbula, NSW. These findings imply that, under the conditions tested, considerable protection against M. roughleyi can be gained by raising the growing height of oysters over winter in southern NSW growing areas, and that the growth advantages of triploid S. glomerata can be utilized without an increased mortality level caused by this disease.
机译：在澳大利亚新南威尔士州乔治市的商业潮间带评估了生长高度对澳大利亚冬季死亡率（由Mikrocytosoughleyi引起）引起的悉尼牡蛎死亡率的影响。当牡蛎高出300毫米时，死亡率在正常生长高度时为35.1±8.4％，下降到9.3±0.9％，而在潮汐中低出300毫米时，死亡率则上升至52.4±0.2％。在较高的生长水平下，没有明显的生长损失，并且在不同生长水平下的死亡率与糖原含量或状态指数之间也没有发现相关性。牡蛎养殖者担心，Merimbula潮间带生长水平为2时，与在棍棒上生长的相同牡蛎相比，在托盘上种植的单个种子二倍体和三倍体沙门氏菌可能导致更高的死亡率。 ，新南威尔士州。这些发现表明，在测试的条件下，通过提高新南威尔士州南部产区的牡蛎在冬季的生长高度，可以获得对粗rough菜的大量保护，并且可以利用三倍体S. glomerata的生长优势而不会增加由这种疾病引起的死亡率水平。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号