Acta Ichthyologica et Piscatoria 3(1): 3-9, doi: 10.3750/AIP1973.03.1.01
New data on the mechanism of water uptake in salmonid eggs
expand article infoA. Winnicki, C. Cykowska
Open Access
Water uptake of eggs of Salmo trutta L. and Salmo gairdneri Rich. in water and 1/15 M buffers was studied. It was found that if buffers prevent the formation of the perivitelline space in the eggs placed in them immediately after spawning, they do not exclude its normal formation in the eggs placed for 2 or even 1 minutes in water prior to their being transferred to a buffer. The authors express their opinion that the water uptake of eggs proceeds in two stages and that there are correspondingly two factors, an osmotic and a colloidal, responsible for this process.