Fisinin V I, Zhuravlev I V, Salamatin A V
National Research and Technological Institute of Poultry Farming, Sergiev-Posad-11, ul. Ptitsegradskaya 10, Moscow Oblast', 141300 Russia.
Ontogenez. 2004 Jan-Feb;35(1):33-6.
The increase of egg mass and reliable decrease of egg fertilizability were observed when the mass surface area of yolk (egg) increased. The results obtained suggest that, in addition to the number of viable spermatozoa penetrating across the perivitelline membrane within 15-20 min after ovulation, the probability of fertilization depends on the area of egg surface, which approximately corresponds to the area of perivitelline membrane. Apparently, the ratio of receptors' numbers and spermatozoa, which contact with them on the germ disc surface, to their number on the rest part of perivitelline membrane decreases with the increase of yolk size. The decreased egg fertilizability concomitant with the increased area of perivitelline membrane suggests that the egg size is one of the factors of fertility of the female gametes as concerns both variability of the egg composition and age.
当卵黄（卵）的质量表面积增加时，观察到卵质量增加且卵受精能力可靠下降。所得结果表明，除了排卵后15 - 20分钟内穿过卵周膜的活精子数量外，受精概率还取决于卵表面面积，该面积大致对应于卵周膜面积。显然，随着卵黄大小增加，在胚盘表面与受体接触的精子数量与卵周膜其余部分上受体数量的比例会降低。卵周膜面积增加伴随卵受精能力下降表明，就卵成分变异性和年龄而言，卵大小是雌配子生育力的因素之一。
