Craik J C
Comp Biochem Physiol A Comp Physiol. 1986;83(3):515-7. doi: 10.1016/0300-9629(86)90138-6.
In cod, Gadus morhua L., calcium levels expressed as percentage of tissue dry weight were (mean +/- SD) 0.0042 +/- 0.0010% of ovary before final maturation and 0.0133 +/- 0.0024% of mature eggs. In plaice Pleuronectes platessa L. these values were 0.0029 +/- 0.0006 and 0.0097 +/- 0.0001. In mature eggs of both fish species these values are at least one order of magnitude less than in the yolk of the domestic fowl Gallus domesticus L. (0.14% of dry weight). The corresponding values for iron were (2.31 +/- 0.22) X 10(-3)% of ovary and (3.07 +/- 0.29) X 10(-3)% of mature egg in cod. In plaice these values were (1.57 +/- 0.15) X 10(-3)% and (2.74 +/- 0.94) X 10(-3)%. These levels are 4-7 times less than in the yolk of the domestic fowl (0.012-0.020%). These differences between the mature pelagic eggs of marine teleosts and the eggs of other oviparous vertebrates appear to be related to the availability of these elements in sea water, the different nature of the yolk phosphoprotein and the lower levels of protein phosphorus in the eggs of these fish species.
在鳕鱼（Gadus morhua L.）中，以组织干重百分比表示的钙含量在最终成熟前的卵巢中为（平均值±标准差）0.0042±0.0010%，在成熟卵中为0.0133±0.0024%。在鲽鱼（Pleuronectes platessa L.）中，这些值分别为0.0029±0.0006和0.0097±0.0001。在这两种鱼类的成熟卵中，这些值至少比家鸡（Gallus domesticus L.）卵黄中的值低一个数量级（干重的0.14%）。鳕鱼卵巢中铁的相应值为（2.31±0.22）×10⁻³%，成熟卵中铁的相应值为（3.07±0.29）×10⁻³%。在鲽鱼中，这些值分别为（1.57±0.15）×10⁻³%和（2.74±0.94）×10⁻³%。这些水平比家鸡蛋黄中的水平低4至7倍（0.012 - 0.020%）。海洋硬骨鱼成熟的浮游卵与其他卵生脊椎动物的卵之间的这些差异，似乎与海水中这些元素的可利用性、卵黄磷蛋白的不同性质以及这些鱼类卵中较低的蛋白质磷水平有关。
