alexa Sperm-egg Association and its Relationship to the Activation of the Egg in Salmonid Fishes
Agri and Aquaculture

Agri and Aquaculture

Fisheries and Aquaculture Journal


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The union of the gametes and the activating action of the spermatozoon upon the egg are two inseparable phenomena of the process of fertilization. This holds true for the majority of animals; the mechanism determining this interrelation will be considered below. Salmonid fishes seem to be an exception in that there are data according to which under certain conditions the fusion of their gametes may proceed without an activation of the egg. When inseminated either in coelomic fluid (in which ovulated eggs are immersed) or in Ringer solution, the eggs of salmonid fishes show no apparent changes. But if put into water either after the spermatozoa on the egg surface have been killed (Privolnev, 1941), or after the spermatozoa have lost their fertilizing capacity (Kusa, 1950a), these eggs undergo development in the same way as those inseminated in water. This suggests that the union of the gametes is effected before the eggs are put into water, but without activation.

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This article was published in Development and referenced in Fisheries and Aquaculture Journal

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