Egg Fertility in Domestic Fowl Gallus gallus domesticusas a Function of the Yolk Surface Area

Egg Fertility in Domestic Fowl Gallus gallus domesticusas a Function of the Yolk Surface Area The increase of egg mass and reliable decrease of egg fertility 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 non-germ zone decreases with the increase of yolk size. The fertility depression associated with the increased area of perivitelline membrane suggests that the egg yolk size is one of the factors of fertility of the female gametes in terms of both egg content variability and aging. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Egg Fertility in Domestic Fowl Gallus gallus domesticusas a Function of the Yolk Surface Area

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1023/B:RUDO.0000015121.54994.6f
Publisher site
See Article on Publisher Site

Abstract

The increase of egg mass and reliable decrease of egg fertility 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 non-germ zone decreases with the increase of yolk size. The fertility depression associated with the increased area of perivitelline membrane suggests that the egg yolk size is one of the factors of fertility of the female gametes in terms of both egg content variability and aging.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Oct 18, 2004

References

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