• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oceanography and Marine Biology: An Annual Review >AUTECOLOGY OF CRANGON CRANGON (L.) WITH AN EMPHASIS ON LATITUDINAL TRENDS
【24h】

AUTECOLOGY OF CRANGON CRANGON (L.) WITH AN EMPHASIS ON LATITUDINAL TRENDS

机译：带有纵向趋势的Crangon（L.）的航空学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This review aims to update and extend the synopsis by Tiews (1970) on the biology and fisheries of Crangon crangon (L.). Its wide distributional range along the European coast from the White Sea to Morocco within the Atlantic and throughout the Mediterranean and Black Seas reflects the capability of C. crangon to cope with a wide range of temperature and salinity conditions and is further explained by its migratory capacity. Present knowledge suggests that the limiting factor at the northern cold water edge of its distribution is formed by egg and larval development and at the southern warm water edge by maintenance costs. No information is available about the genetic population structure, but patterns in isoenzymes and in morphometric characters indicate the existence of various subpopulations. Over its distributional range, especially along the north Atlantic coast, clear trends in life-history parameters are observed, most likely reflecting temperature conditions. Due to its generally high abundance, the common shrimp forms a key component in the functioning of coastal shallow ecosystems; however, it is unclear whether the population dynamics of the species is subject to top-down or bottom-up control. On the one hand, C. crangon is an opportunistic feeder with a wide prey spectrum though it remains to be solved whether growth conditions are optimal and only determined by prevailing water temperatures, or whether food limitation is a regulating mechanism. On the other hand, top-down control by predation cannot be excluded since C. crangon is also an important food item for a variety of predators, especially fish species. There are strong indications that predation by C. crangon might regulate some of their prey species. Topics for further research include (1) the analysis of the genetic population structure by means of molecular tools; (2) the study of growth and reproduction in relation to latitude; (3) the application of dynamic energy budgets for the analysis in terms of energy of the various trade-offs, including growth versus reproduction; and (4) the analysis of the mechanisms determining recruitment, especially whether top-down or bottom-up control is occurring.
机译：这篇综述的目的是更新和扩展Tiews（1970）对Crangon crangon（L.）的生物学和渔业的概述。它在欧洲海岸从白海到摩洛哥在大西洋内以及整个地中海和黑海的广泛分布范围反映了C. crangon应对各种温度和盐度条件的能力，并通过其迁徙能力进一步解释。目前的知识表明，其分布的北部冷水边缘的限制因素是卵和幼体的发育，而南部暖水边缘的限制因素是维护成本。没有有关遗传种群结构的信息，但是同工酶和形态特征中的模式表明存在各种亚群。在其分布范围内，尤其是在北大西洋沿岸，观察到了生命历史参数的明显趋势，很可能反映了温度条件。由于其虾普遍丰富，因此成为沿海浅层生态系统功能的关键组成部分。但是，尚不清楚该物种的种群动态是受自上而下还是自下而上的控制。一方面，C。crangon是一种机会猎物，具有广泛的猎物范围，尽管生长条件是否最佳且仅由当前水温决定，还是食物限制是否是调节机制仍有待解决。另一方面，不能排除通过捕食进行自上而下的控制，因为C. crangon还是各种食肉动物（尤其是鱼类）的重要食物。有充分的迹象表明，C。crangon的捕食行为可能会调节其某些猎物种类。进一步研究的主题包括：（1）利用分子工具对遗传种群结构进行分析; （2）关于纬度的生长和繁殖的研究; （3）应用动态能源预算进行各种权衡取舍，包括增长与再生产的能源的分析; （4）分析决定招聘的机制，尤其是正在进行自上而下或自下而上的控制。

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