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Markers of hypoxic stress in fish in the Kissimmee River.

机译:基西米河鱼类中的低氧应激标记。

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摘要

The channelized Kissimmee River experiences seasonally low dissolved oxygen levels which have changed the ecosystem to favor air-breathing species, while gamefish populations have declined greatly. In 2001, the central portion of the river (Pool C) was physically restored.; To evaluate the usefulness of various stress markers and assess the success of the partial restoration, the stress responses were analyzed (brain monoamines, heat shock proteins, and plasma cortisol) of air-breathing fish (bowfin, Florida gar), versus gamefish (largemouth bass and bluegill sunfish). Fish were collected from hypoxic and normoxic water at three sites in the Kissimmee River. Statistical analysis (MANOVA) showed overall significantly higher stress response in hypoxic gamefish than those in normoxia, with higher hsp72 levels, DOPAC, and Dopamine turnover (DOPAC:DA). Hsp60 and cortisol was significantly higher only in hypoxic bass while serotonin and 5-HIAA were significantly higher in hypoxic bluegill sunfish. Air-breathers did not show higher stress levels during hypoxia.
机译:通道化的基西米河经历了季节性的低溶解氧水平,这改变了生态系统,有利于呼吸空气的物种,而game鱼的种群却大大减少了。 2001年,对河的中部(C池)进行了物理修复。为了评估各种压力标记的有用性并评估部分恢复的成功性,分析了气喘鱼(长鳍fin,佛罗里达鱼)和game鱼(大嘴the)的应力响应(脑单胺,热激蛋白和血浆皮质醇)。低音和翻车鱼翻车鱼)。在基西米河的三个地点从缺氧和常氧的水中收集鱼。统计分析(MANOVA)显示,缺氧game鱼的应激反应总体上比正常氧明显更高,hsp72水平,DOPAC和多巴胺周转率(DOPAC:DA)更高。 Hsp60和皮质醇仅在低氧鲈鱼中显着较高,而5-羟色胺和5-HIAA在低氧蓝blue翻车鱼中显着较高。空气呼吸器在缺氧期间未显示较高的压力水平。

著录项

  • 作者

    Dirk, Lynda J.;

  • 作者单位

    Florida Atlantic University.;

  • 授予单位 Florida Atlantic University.;
  • 学科 Biology Animal Physiology.
  • 学位 M.S.
  • 年度 2006
  • 页码 45 p.
  • 总页数 45
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生理学;
  • 关键词

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