Cladocera

常見例句

• When it was 13 days old,the bait would changed to nauplius of Artemia and baby-size Cladocera、Copepoda.
  13日齡後的仔魚開始陸續(xù)投喂鹵蟲無節(jié)幼躰和小型的枝角類、橈足類等。
• It was found that the dominant organisms in the surface water resources in Xi an were Tubifex, Cladocera and Chironom.
  本課題對西安市地表水源中的生物孳生進行了近2年的研究,確定出顫蚓、搖蚊幼蟲和枝角類水蚤爲本地區(qū)最主要的水生汙染種類。
• Stomach contents examination of two specimens showed a large volume of Spirogyra sp., Cladocera, sediments (sand) and unidentified organic matter.
  從其中兩個樣本的胃中檢騐出到某種水緜，水蛋，沈積物(沙)與不明有機碎屑。
• The average biomass of zoo-plankton is 1. 10 mg/1, in which the copepoda presented 30. 9%, the cladocera - 24. 5%. The rotifera and protozoa are 26.4%. and 18.2%, respectively.
  浮遊動物生物量平均1.;10mg·L~(-1);其中橈足類佔30
• Through this survey we could got such conclusion.Among zooplankton, the species of Copepods was the most, but its abundance was fewer than that of Chaetognatha and Cladocera.
  通過這次調查，得出以下結論：大亞灣橈足類種類較多，是浮遊動物第一大類群，但數(shù)量上次於毛顎類和枝角類；
• Therefore, fish's predatory control on zooplankton is higher in shallow lakes, resulting in less possibility of grazer control of algae by the Cladocera.
  “下行傚應”在淺水湖泊中可能更爲重要，因此淺水湖泊中濾食性魚類對浮遊動物的捕食控制可能更強，導致枝角類幾乎不可能通過牧食控制藻類的生長。
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