Uptake of inorganic ions from the maternal circulation during development of the embryo of a viviparous lizard, Sphenomorphus quoyii

Abstract

1. 1. Inorganic ion content of developing follicles and of whole eggs and separated embryos and yolk sacs of the viviparous lizard, Sphenomorphus quoyii has been measured. 2. 2. There is a net increase in calcium, sodium and potassium in whole eggs during gestation. Magnesium and phosphorus content remains constant. 3. 3. The additional ions are incorporated into the developing embryo. 4. 4. Calcium content of the yolk is compared with that of the fowl and other species of reptile.