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   幼体孵化 的翻译结果: 查询用时:0.521秒
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幼体孵化
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     Incubation thermal and hydric environments did not determine sex in T septentrionalis.
     孵化温湿度与孵出幼体的性别无关。
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     Effects of rare earths on egg hatching and larval metamorphosis of Penaeus chinensis
     稀土元素对中国对虾卵子孵化幼体变态的影响
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     The artificial insemination and hatching of Trichiurus lepturus
     带鱼人工授精和孵化
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     The artificial fertilization and hatching of Engraulis japonicus
     鳀人工授精和孵化
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     Regulation of molting in crustacean larvae
     甲壳动物幼体蜕皮的调控
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  hatching larvae
sativus pods exhibited a similar response to hatching larvae.
      
Cauliflower and kale plants were inoculated with root fly eggs (25 per plant) and the hatching larvae were allowed to feed on the roots for various periods of time (1-17 days).
      
All these plant reactions have directly negative effects on the eggs, hatching larvae, or on the ovipositing females.
      
About 1% of field-collected adults produced mixed clutches containing a continuum of larval sizes, spanning the size extremes of planktotrophy and lecithotrophy and hatching larvae with a mean maximum shell dimension of 152?μm.
      
Almost 65% of the live biomass (total proteins) of the hatching larvae was accumulated during the last few weeks of development.
      
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the unilateral eyestalk enucleation from Eriocheir sinensis before ecdysis under indoor

室内条件下,采用烫灼挤压法切除中华绒螯蟹的单侧眼柄,结果表明,对青春期蜕壳前的蟹,切除任意一侧眼柄,都能有效地促进蜕壳、生长及性腺的早期发育,但无助于诱导卵巢的成熟、产卵.试验还表明,切除单侧眼柄不会导致高死亡率,且对蟹的交配、怀卵、幼体的孵化培育无不良影响。

By using prawn breeding equipment productive experiment was carried out on factoryscale breeding of Erinocheir sinensis in the natural seawater. The main techniques include Fcarbs' rearing and brith promoting, larval hatching and larval cultivating. The result showed that 696 F-carbs yielded 17 640 000 megalopa larva.

本文报导了利用对虾育苗设施,进行天然海水河蟹工厂化育苗生产性试验。试验结果令人满意,696只亲蟹产出蟹苗1764万只。文中讨论了亲蟹的暂养与促产、幼体孵化、幼体培育等主要技术环节。

The effects of temperature and salinity on hatching and larval survival rate of Hapalo-genys nitens Richardson are showed as follows. ①The suitable temperature in hatching ofHapalogenys nitens is 19~25℃ and the optimum at 23~25℃. ②The suitable salinity is 16.3 ~ 34. 7 and the optlmum at 24. 2~32. 1,especially 29. 5. ③At temperature 23C,salinity29. 5 and pH 8. 1~8. 3,the highest hatching rate 93. 3% is obtained. ④At 22. 6~23. 4℃ and24. 2 ~ 32. 1, the survival rate of juveniles,at 42~ 52h, is higher than 81. 8%...

The effects of temperature and salinity on hatching and larval survival rate of Hapalo-genys nitens Richardson are showed as follows. ①The suitable temperature in hatching ofHapalogenys nitens is 19~25℃ and the optimum at 23~25℃. ②The suitable salinity is 16.3 ~ 34. 7 and the optlmum at 24. 2~32. 1,especially 29. 5. ③At temperature 23C,salinity29. 5 and pH 8. 1~8. 3,the highest hatching rate 93. 3% is obtained. ④At 22. 6~23. 4℃ and24. 2 ~ 32. 1, the survival rate of juveniles,at 42~ 52h, is higher than 81. 8% and over 84%when the salinity is 26. 9~32. 1.

本文对不同温、盐度梯度下斜带髭鲷的孵化情况进行探讨,结果表明:①斜带髭鲷的适宜孵化温度为19~25℃,最适温度为23~25℃。②适宜盐度为16.3~34.7,最适盐度为24.2~32.1,尤以29.5为好。③当温度为23℃,盐度为29.5,pH值为8.1~8.3时,幼体孵化率最高,达93.3%。④温度22.6~23.4℃,盐度24.2~32.1,42h孵出的仔鱼至52h存活率高于81.8%,尤以盐度26.9~32.1时为高,达84%以上。

 
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