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首页> 外文期刊>Lakes & Reservoirs >The resting eggs of zooplankton from a tropical, eutrophic reservoir (Pampulha Reservoir, south-east Brazil)
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The resting eggs of zooplankton from a tropical, eutrophic reservoir (Pampulha Reservoir, south-east Brazil)

机译：来自热带富营养化水库（巴西东南部的潘普利亚水库）的浮游动物的卵

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摘要

Resting eggs of rotifers and cladocerans were collected within 5cm of sediments from the eutrophic Pampulha Reservoir. All the collected species were successfully hatched and reared in the laboratory. Although the hatching success of rotifer eggs was high (60–80%), it constituted only about 10% of the level of cladoceran eggs. The egg abundance in Pampulha Reservoir varied from 203.2×103 eggs m−2 to 80×103 eggs m−2. The low densities of resting eggs suggest that the recovery activities directed to the reservoir, such as constant dredging of the sediment, might be affecting this potential genetic pool and, consequently, the maintenance of the remaining and pioneer zooplanktonic populations.
机译：在富营养化的Pampulha水库5cm的沉积物中收集了轮虫和锁骨的静止卵。所有收集的物种均已在实验室成功孵化并饲养。尽管轮虫卵的孵化成功率很高（60-80％），但只占锁骨卵水平的约10％。潘普拉哈水库的卵丰度从203.2×103卵m-2到80×103卵m-2不等。静息卵的低密度表明，针对储层的恢复活动（例如不断疏sediment沉积物）可能会影响这一潜在的遗传库，并因此影响到其余和先驱浮游动物种群的维持。

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  • 来源
    《Lakes & Reservoirs》 |2003年第4期|269-275|共7页
  • 作者

    P. M. Maia-Barbosa; E. M. Eskinazi-SantAnna; C. F. Valadares; G. C. D. Pessoa;

  • 作者单位

    Federal University of Minas Gerais Laboratory of Zooplankton Ecology ICB/Bl I3/253 Avenue AntÔnio Carlos 2267. Pampulha Belo Horizonte Brazil. 31270–901 and;

    UFRN Centro de BiociÊncias Departamento de Oceanografia e Limnologia Via Costeira s. Praia de MÃe Luiza Natal RN Brazil. 59014-100.;

    Federal University of Minas Gerais Laboratory of Zooplankton Ecology ICB/Bl I3/253 Avenue AntÔnio Carlos 2267. Pampulha Belo Horizonte Brazil. 31270–901 and;

    Federal University of Minas Gerais Laboratory of Zooplankton Ecology ICB/Bl I3/253 Avenue AntÔnio Carlos 2267. Pampulha Belo Horizonte Brazil. 31270–901 and;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Brazil; reservoir; resting eggs; tropical; zooplankton;

    机译：巴西;水库;静息卵;热带;浮游动物;

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