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日齡后的仔魚開始陸續(xù)投喂鹵蟲無節(jié)幼體和小型的枝角類、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為本地區(qū)最主要的水生污染種類。
• 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驗出到某種水綿，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.
  浮游動物生物量平均1.;10mg·L~(-1);其中橈足類占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(diào)查，得出以下結(jié)論：大亞灣橈足類種類較多，是浮游動物第一大類群，但數(shù)量上次于毛顎類和枝角類；
• Therefore, fish's predatory control on zooplankton is higher in shallow lakes, resulting in less possibility of grazer control of algae by the Cladocera.
  “下行效應(yīng)”在淺水湖泊中可能更為重要，因此淺水湖泊中濾食性魚類對浮游動物的捕食控制可能更強，導(dǎo)致枝角類幾乎不可能通過牧食控制藻類的生長。
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