搜狗做题网英语翻译,In nature the eggs are scattered in open water at the o
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英语翻译,
In nature the eggs are scattered in open water at the onset of the rains without any nest. The male wraps itself in the female body, fertilizing the eggs as they are laid. Each time 200 colorless eggs are released until about 5000 numbers are laid. The fecundity varies from 5000-35000 numbers. The eggs rise to the surface and float. The eggs hatch in 24 hrs and the fry are about 2-3 mm long. They are free swimming within two days of hatching.
In case of artificial breeding with pituitary or synthetic hormone, a single dose of injection for both the male and female spawning actively and courtship behavior starts after 6 hrs of injection. The water temperature to be maintained at 280 C + 10C. Fertilized eggs float in the surface of water. It takes 18-19 hrs for hatching after spawning and newly hatches larvae measures 1.9-2.0 mm in length without any movement. Yolk sac completely absorbs on third day after hatching and settles at the bottom. Egg custard, plankton and Artemia are supplied as artificial feed for those fries up to 20-25 days. The survivability varies from 70-75%.
In nature the eggs are scattered in open water at the onset of the rains without any nest. The male wraps itself in the female body, fertilizing the eggs as they are laid. Each time 200 colorless eggs are released until about 5000 numbers are laid. The fecundity varies from 5000-35000 numbers. The eggs rise to the surface and float. The eggs hatch in 24 hrs and the fry are about 2-3 mm long. They are free swimming within two days of hatching.
In case of artificial breeding with pituitary or synthetic hormone, a single dose of injection for both the male and female spawning actively and courtship behavior starts after 6 hrs of injection. The water temperature to be maintained at 280 C + 10C. Fertilized eggs float in the surface of water. It takes 18-19 hrs for hatching after spawning and newly hatches larvae measures 1.9-2.0 mm in length without any movement. Yolk sac completely absorbs on third day after hatching and settles at the bottom. Egg custard, plankton and Artemia are supplied as artificial feed for those fries up to 20-25 days. The survivability varies from 70-75%.
自然条件下,由于没有卵巢,鱼卵在雨季初期会分散在雨水中.雄性会被包裹在雌性体内,为产下的鱼卵受精.每次会产下约200颗无色鱼卵,最终会达到5000颗左右.由于繁殖能力不同,产下的鱼卵数量在5000-35000颗之间.鱼卵会在水面漂浮,孵化期通常为24小时,孵出的鱼苗长度约2-3毫米.孵化期间的两天,鱼苗可以自由的游动.
如果通过脑垂体或合成激素进行人工繁殖,给雄性和正在产卵的雌性每次注入后的6个小时会出现求偶行为.水温需要保持在280 C + 10C的范围,受精卵会浮在水面.刚产出的卵孵化时间约为18-19个小时,刚孵出的鱼苗长度为1.9-2.0毫米,没有游动能力.卵黄囊在孵化后的第三天才能够完全吸收沉底.可以将浮游生物,卤虫作为鱼苗的人工饲料,喂养20-25天.鱼苗成活率为70-75%.
再问： 多谢,已额外的奖励50分
如果通过脑垂体或合成激素进行人工繁殖,给雄性和正在产卵的雌性每次注入后的6个小时会出现求偶行为.水温需要保持在280 C + 10C的范围,受精卵会浮在水面.刚产出的卵孵化时间约为18-19个小时,刚孵出的鱼苗长度为1.9-2.0毫米,没有游动能力.卵黄囊在孵化后的第三天才能够完全吸收沉底.可以将浮游生物,卤虫作为鱼苗的人工饲料,喂养20-25天.鱼苗成活率为70-75%.
再问： 多谢,已额外的奖励50分
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