無節幼蟲 的英文怎麼說
中文拼音 [wújiéyòuchóng]
無節幼蟲
英文
nauplius-
Among them, tintinnopsis beroide, t. urnula, t. brevicollis and copepod nauplius were dominant
Urnula 、短頸擬鈴蟲和橈足類無節幼體為主要優勢種。The main feed at this time consists of brine shrimp larvae, oyster eggs and diatoms spiruline, skeletonema costatum. however other zooplankton such as copepoda and rotifera can also be used. during the mysis stage the bodies of the fry become larger and so are able to ingest the nauplii of the brine shrimp along with spirulina and
糠蝦期幼蟲個體較大，已能攝食豐年蝦無節幼蟲，拌用螺旋藻，蝦苗丹喂飼，其存活率有意想不到的好，將螺旋藻與豐年蝦無節幼蟲，蝦苗丹等配合一起喂飼，其存活率高的原因，在於豐年蝦無節幼蟲亦能攝食螺旋藻蝦苗丹，可增加豐年蝦無節幼蟲的存活率，不僅能節省豐年蝦外，又能避免水質惡化不需要常換水。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
無節幼蟲蟲隨著脫皮體形漸大，共有六期，第一期到第六期所需時間依水溫高低有所不同，通常在27 29之下約50小時， 21 22之下則約需110小時，于第六次脫皮后即進入眼幼蟲期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，其形態特徵為體長比無節幼蟲期大而伸長，頭胸部與形態和前期同，此期最怕太陽直射，在太陽直射下，飼育的水蚤幼蟲眼幼蟲，身體彎曲成為畸形，不攝食。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 .無節幼蟲naplius此期外觀如小蜘蛛，此期間靠體內之卵黃維持所需營養不覓求食物，具有很強的趨光性。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
當無節幼蟲脫了第五次皮后，也就是孵化為無節幼蟲后第二天，即須給飼上述餌料。Nauplii grow by their own yolk, and do not take food from the outside
無節幼蟲靠本身體內的蛋黃生長，不必自外面攝取食物。分享友人