无节幼虫 meaning in English
nauplius
Examples
- Nauplii grow by their own yolk , and do not take food from the outside
无节幼虫靠本身体内的蛋黄生长，不必自外面摄取食物。 - In order to judge whether the larvae have reached the sixth stage , one should observe whether or not spines have developed at the end of the tail section
当无节幼虫脱了第五次皮后，也就是孵化为无节幼虫后第二天，即须给饲上述饵料。 - At this stage the larva looks like a small spider and does not need to seek food from outside sources because it survives on its egg yolk
3 .无节幼虫naplius此期外观如小蜘蛛，此期间靠体内之卵黄维持所需营养不觅求食物，具有很强的趋光性。 - At 27 - 29 , the process needs about 50 hours . at 21 - 22 degrees the process needs approximately 110 hours . after molting for the sixth time , the larva enters the zoea stage
无节幼虫虫随著脱皮体形渐大，共有六期，第一期到第六期所需时间依水温高低有所不同，通常在27 29之下约50小时， 21 22之下则约需110小时，于第六次脱皮后即进入眼幼虫期zoea stage 。 - The first stage is characterized by the body becoming bigger and more elongated than in the nauplius stage ; the head and thorax , however , remain unchanged . during this stage direct heat and light from the sun is detrimental to the development of the larvae . under direct sunlight they become deformed and are unable to absorb nutrients
第一期，其形态特徵为体长比无节幼虫期大而伸长，头胸部与形态和前期同，此期最怕太阳直射，在太阳直射下，饲育的水蚤幼虫眼幼虫，身体弯曲成为畸形，不摄食。