Z - zoea 中文 - EN166

zoea n.(pl. zoeae , zoe-as) 【動物；動...

zoetrope
In these transition periods , the digestion system is not well developed yet and is very sensitive to any change in their digestion systems . this stress - related indigestion can eventually lead to death . the stress is easily induced in the above mentioned two stages because zoea begins to take external food since the yolk in its body has been consumed during the nauplius stage ，是由多種酵素，黃蓮黃柏抽出物的綜合體，能迅速安全的分解殘餌，解決污泥產生，免除亞硝酸及阿摩尼亞所造成的生理緊迫，更因為神奇的酵素作用，能幫助蝦苗腸道的正常機能，避免蝦苗初飼食物或改變飼料的生理緊迫消化不良而導致死亡。
After molting three times , the zoea enter the mysis stage during which they begin to look more like adult shrimp and swim in a characteristic fashion with head and tail pointed downwards at right angles and occasionally performing a sudden retrograde jumping action . this is known as the inversion state , the fry being suspended upside - down in the upper middle region of the pond water . this is , therefore , also called the “ inverted suspension phase “ 眼幼蟲脫第三次即進入糠蝦期幼蟲期mysis stage ，此期之體形已略成蝦之狀態，且具特有之游泳姿態，即頭部及尾部均向下，成一直角彎曲而時作向后跳躍游動，又因成倒立狀態，懸浮于水中的中上層，又叫倒吊期，此期幼蟲對外界的環境因素，如水溫鹽分等變化，比前兩期來得更具適應力，主要餌料為豐年蝦brine shrimp的幼蟲，但其他大小略同的動物性浮游生物，如橈腳類copepoda輪蟲類rotifera均可。
Live feed such as the slender spirulina are floating organisms which can maintain good water quality and are also abundant in nutrients , proteins , natural vitamins , minerals and carotenoid . they are suitable food for the shrimp larvae from the zoea through to the mysis stage of development 螺旋藻為浮游性，藻體細長，活的餌料生物能保持水質，營養份很豐富，含高量的蛋白質，天然的維他命，礦物質及類胡蘿卜素，易于自眼幼蟲至糠蝦期攝食。
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 。
Apply once every two day at night , 2 - 5 ppm each time , from zoea stage continue till transfer of larvae fish to growing pound 兩天一次， 2 - 5ppm于夜間實施，從眼幼蟲期一直使用到可供放養的蝦苗。
The zoea will begin to catch plankton such as spirulina and skeletonema costatum , oyster eggs or oyster larvae 此時繁殖矽藻，或以水色調節劑，使池水變為淡褐色。
1 . it is very specific for the young larvae to cure digestive system disorders at the stages of zoea 1 .治療眼幼蟲期拖糞期的消化不良特效。
Larval shrimp : good for larval shrimp from zoea stages to mysis stage and post - larval stages 投飼量依孵化槽內的幼魚，蝦之密度而增減
Can be easily ingest from zoea to post larva stage 可自眼幼蟲期開始給飼。