查询词典 copepods

Nutrient-enriched reservoirs support greater abundance and biomass of copepods. However, dominance of Calanoids was lower while dominance of cyclopoids, copepodids and nauplius were much higher in the nutrient-enriched reservoirs.

随着水库营养水平的升高，桡足类密度和生物量也相应增加，但是大型哲水蚤的优势度降低，而剑水蚤和桡足类幼体的优势度上升。

Euphausiids supplied most of the food intake for the pelagic fish communities, followed by copepods, amphipods and sagitta, while the most important food resources for the demersal fishes were shrimps and fishes as well as euphausiids.

磷虾类是中上层鱼类最主要的食物来源，其次是桡足类、端足类和毛颚类；虾类和鱼类是底层鱼类最主要的食物来源，其次是磷虾类。

It can be seen that the species composition of zooplankton comprised mainly of protozoa,followed by rotifers,copepods and cladocera,with an average density of 3.98×10~3ind/L.

从中可看出浮游动物种类组成以原生动物为主，其次是轮虫，桡足类和枝角类最少，平均密度为3.98×10~3ind/L。

Temporal changes in zooplankton composition occurred in both ponds with Cladocera appearing in abundance later, in the fourth week, whereas copepods and rotifers were well represented since the beginning.

浮游动物组成短暂的变化在两个塘同时出现随着枝角类较晚出现一定丰度，在第四周左右，然而桡足类和轮虫自开始就出现。

Low community variability was also observed in the late season for rotifers when fish were excluded and, as a result, they were exposed to high invertebrate predation from cyclopoid copepods.

后期的季节中轮虫的低群体多变性也被观察当鱼类被排除在外，结果，它们被暴露于来自桡足类高无脊椎动物掠食行为

Fry feed on nymphal and larval insects while in fresh water, but once at sea may not feed at all until they become juveniles, when they eat copepods and other zooplankton.

在新鲜的水中，但一旦在海上可能不饲料，直至他们吃桡足类和其他浮游动物时，他们变得青少年，鱼苗喂若虫和幼虫昆虫。

The density of copepods accounted for 72.45% of the total density, and planktonic larvae for 23.41%.

桡足类占浮游动物总密度的72.45%，其次幼虫占23.41%。

Copepods with suctorial mouthparts; parasitic on fishes.

有吸口器的桡足动物；寄生于鱼上。

Cobia are frequently parasitized by nematodes, trematodes, cestodes, copepods and acanthocephalans.

因数是经常寄生线虫、吸虫、 cestodes、桡足类和 acanthocephalans。

The zooplankton was mainly contributed by copepods, and its dominant species were mostly eutrophication indicators: Keratella cochlearis, Polyarthra trigla.

水库的主要优势种为轮虫，而且优势种所出现的种类多为富营养化指示种，如：螺形龟甲轮虫Keratella cochlearis、针簇多肢轮虫Polyarthra trigla。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。