| However, commercialization of the cultivation has not been accomplished yet because the period of larvae is long and the death rate during the period is high, and in addition there are many problems controlling the growth of the larvae to reach the fry shrimp phase while reducing the rate of decrease. |
だが、幼生期間が長くその間の死亡率も高い事など、減耗率を抑え稚エビまでの成長を管理する上で問題も多く、事業化には至っていない。 |