另一个担忧是有些鱼类的鱼卵和仔鱼可能无法在酸性较强的水里存活,像乌贼那种需要大量氧气的生物也会死亡。
Another worry is that the eggs and larvae of some fish may be unable to survive in more acidic water, and that creatures like squid which need a lot of oxygen will also die out.
报道了松潘裸鲤的胚胎发育和胚后仔鱼发育的各期形态特征及发育特点。
This paper reports the morphological features and development characteristics of Gymnocypris potanini during its embryonic and post-embryonic stages.
马面鲀仔鱼基本沿涡旋周围的海流逐步向东北方向漂移。
The larvae of filefish basically drift along the current around the eddy towards northeast gradually.
对土池育苗条件下大弹涂鱼早期仔鱼的摄食进行了分析。
Initial feeding of early larvae Boleophthalmus pectinirostris in earthen pond rearing was analyzed in this study.
延迟投饵2天以上使云斑尖塘鳢仔鱼的存活率显著下降。
The larvae livability obviously decreased due to delayed feeding for more than 2 days.
试验观察热冲击、不同盐度对太湖新银鱼仔鱼成活情况的影响。
The influence of heat shock and different salinity on the fry fish was observed.
味蕾的大小随仔鱼日龄的增加而增大,其总数随鱼个体长大而增多。
The size and the number of the sense buds increased as young fish grew.
以低盐度和高盐度相比较,4日龄以后,低盐度似有利于仔鱼存活。
Comparatively speaking, lower salinity environment seemed more beneficial to the survival of the larvae since the 4th day after hatching.
随其发育,仔鱼前鼻孔隆起于外表面,发育为管状延伸物而与外界相通。
With the development of the fish, the anterior naris of the fry rose above the external surface and developed into a tubular extension, which opened to the outside.
前鳃盖骨后缘下角出现2个扩大且尖锐的棘,是鉴别黄鲷仔鱼的标志之一。
The appearance of 2 large and sharp spines at lower angle of external edge of the preopercle is also the symbol of the larval Dentex tumifrons.
仔鱼对饵料的选择随着日龄的增加而变化,同时与饵料的大小、种类、密度等因素有关。
Food selection which varies with larval days increasing, is related to food size, species and density.
对益生菌作用的方式所知有限,但有资料建议,添加这些细菌会增进仔鱼的发育和存活。
Although existing knowledge about the modes of action of beneficial bacteria are limited, reviews suggest that addition of such bacteria as probiotics may enhance larval development and survival.
对不同温度下黄颡鱼仔鱼的摄食强度及抵达不可逆点(PNR)时间的变化进行初步研究。
Feeding intensity and point-of-no-return (PNR) of Pelteobogrus fulvidraco larvae at different temperatures were studied under laboratory conditions.
当水草的覆盖度为25%和50%时,仔鱼的成活率高、畸形率低、平均体长和体重都较高。
When the plant cover was 25% and 50%, the survival rate and abnormality rate were low, and the average values of body length and weight were high.
饲料中不同水平的维生素C对黑鲷仔鱼全鱼的常规营养成分含量无显著影响(P>0.05)。
There was no apparent difference in liver proximate protein content and whole body proximate composition among vitamin C treatments (P > 0.05).
鱼类早期生活史可划分为胚胎期、仔鱼期和稚鱼期,其营养包括内源性、外源性和混合性三种类型。
Early Life History of Fish(ELHF) could be divided into embryonic, larval and juvenile stages. There are three types of endogenous, exogenous and mixed nutrition during Early Life History of Fish.
孵出后的仔鱼在第7~9天为死亡高峰期,第11天左右的仔鱼体色有明显的变化,由棕红色变为黑色。
The fry suffered from a peak of death during 7 th to 9 th day and the color of fry changed from reddish brown to black obviously around the 11 th day.
通过对仔鱼脂类的消化、吸收、运输及代谢等方面的一些最新研究综述,以期加深对仔鱼中脂类营养的认识。
By reviewing digestion, absorption, transport and metabolism of lipid nutrition in larval rearing, the aim was to better understand larval lipid nutrition and promote the development of fishery.
实验比较了5个盐度梯度(28、22、16、10、4)下褐菖鲉仔鱼在饥饿条件下的存活状况并测定其不投饵存活系数SAI。
The effects of salinity on survival activity index(SAI) of the larvae of Sebastiscus marmoratus were studied in the laboratory. 5 different levels of salinity were set as follows:28,22,16,10,4.
不同的光照节律和光照强度对胚胎的孵化率和初孵仔鱼畸形率影响不大,但是对胚胎发育速率和孵化时间具有明显的延滞或促进作用。
Effects of light rhythm and light intensity on hatching rate and deforming rate of larvae were not remarkable, but they all delayed or accelerated the embryonic development speed.
仔、稚、幼鱼的生长速度具有明显的阶段性,1~2日龄仔鱼生长较快,5~9日龄生长减慢,21~30日龄生长加快,31~40日龄生长减慢。
The growth rate of fish was higher during 1-2 and 21-30 d after hatch, but slower during 5-9 and 31-40 d after hatch.
仔、稚、幼鱼的生长速度具有明显的阶段性,1~2日龄仔鱼生长较快,5~9日龄生长减慢,21~30日龄生长加快,31~40日龄生长减慢。
The growth rate of fish was higher during 1-2 and 21-30 d after hatch, but slower during 5-9 and 31-40 d after hatch.
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