• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Effects of the toxic dinoflagellate Ostreopsis cf. ovata on survival, feeding and reproduction of a phytal harpacticoid copepod
【24h】

Effects of the toxic dinoflagellate Ostreopsis cf. ovata on survival, feeding and reproduction of a phytal harpacticoid copepod

机译：毒性Dinoflagelate Ostreopsis CF的影响卵巢对植物包蛋白桡足蛋白酶的存活，喂养和再现

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

Harmful algal blooms are a source of increasing concern within the health, economic and ecological sectors. In the Mediterranean Sea, severe blooms of the benthic dinoflagellate Ostreopsis cf. ovata have been occurring since the beginning of the century, causing human intoxications by inhalation of bio-aerosols or direct contact with cells. The toxicity of this dinoflagellate is attributed to the presence of palytoxin and several of its analogs called ovatoxins, palytoxin being one of the most potent marine toxins. While mass mortalities of marine invertebrates have already been reported in relation with O. cf. ovata blooms, the toxic effects of this dinoflagellate on benthic organisms is still poorly documented. In the present study, laboratory experiments were performed on a meiobenthic copepod (Sarsamphiascus cf. propinquus), which naturally lives on macrophytes in close contact to O. cf. ovata, in order to assess its potential toxic effects on mortality, fecal pellet production (as a proxy of feeding), as well as fecundity and fertility ratios. Both, O. cf. ovata as well as a non-toxic competitive diatom (Licmophora paradoxa), were used as food in the experiments. Regarding acute toxicity evaluation, this copepod proved to be the most tolerant organism to O. cf. ovata reported to date. Nevertheless, its fecundity and fertility ratios were lower when fed with the toxic dinoflagellate, indicating a possible reprotoxic effect. Moreover, although fecal pellet production decreased significantly when the copepod was fed with a mono-diet of O. cf. ovata, epifluorescence microscopy observations revealed the presence of the toxic cells inside the digestive track, hence suggesting that these primary grazers could be a vector of toxins through the marine food web.
机译：有害的藻类绽放是恢复健康，经济和生态部门越来越多的源泉。在地中海，底栖蛋白的严重绽放鸵鸟蛋白酶粉末CF.自世纪初以来已经发生了卵巢，通过吸入生物气溶胶或与细胞直接接触来引起人类毒害。这种Dinoflagellate的毒性归因于甲苯肽的存在和其几种称为OvaToxins的类似物，普利氧化汀是最有效的海洋毒素之一。虽然海洋无脊椎动物的大规模死亡人士已经涉及与O. CF有关。卵巢绽放，这种Dinoflagellate对底栖生物的毒性效果仍然不足。在本研究中，在Meiocenthic Copepod（Sarsamphiscus CF.Propinquus）上进行实验室实验，其自然地在与O. CF紧密接触的宏观物质上。卵巢，为了评估其对死亡率的潜在毒性作用，粪便颗粒生产（作为饲养的代理）以及繁殖力和生育率。两者，o. cf.卵巢以及无毒的竞争性硅藻（LiCmophora paradoxa）被用作实验中的食物。关于急性毒性评估，该型COPEPOD被证明是O. CF最耐受性的生物体。 ovata报告迄今为止。然而，当含有有毒的恐龙植物含量时，它的繁殖力和生育率较低，表明可能的再刺激作用。此外，虽然用O.饮食饲喂COPEPOD时，粪便颗粒产量显着下降。卵巢，离荧光显微镜观察显示消化轨道内部有毒细胞的存在，因此表明这些原发性地区可能是毒素的毒素载体。

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