The influence of temperature, salinity and external calcium on diffusional permeability of the eggs of turbot ( Scophthalmus maximus)

• Published in: Aquaculture Vol. 115; no. 3; pp. 335 - 345
• Main Authors: Tytler, Peter, Ireland, Jacqueline
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.1993; Elsevier Science; Elsevier Sequoia S.A
• Subjects: Agnatha. Pisces; Animal and plant ecology; Animal, plant and microbial ecology; Animals; Autoecology; Biological and medical sciences; CALCIO; CALCIUM; Eggs; Fish; Fundamental and applied biological sciences. Psychology; Marine; OVA; OVULE; OVULO; PERMEABILIDAD; PERMEABILITE; PERMEABILITY; SALINIDAD; SALINITE; SALINITY; SCOPHTHALMUS MAXIMUS; TEMPERATURA; TEMPERATURE; Vertebrata; Scophthalmus maximus; Embryonic development; Concentration factor; Temperature; Calcium; Egg; Environmental factor; Salinity; Marine environment; Vertebrata; Pisces; Osmotic pressure; Permeability barrier; Vitelline membrane
• ISSN: 0044-8486; 1873-5622
• DOI: 10.1016/0044-8486(93)90147-Q

Turbot eggs, following activation, are relatively impermeable to tritiated water. Thirty degree-days after fertilisation, the permeability of turbot eggs increased with age. In general permeability increased with temperature, Q 10 ranging from 2.15 to 3.84, and decreased with age. Acute change in salinity had no significant effect on permeability. The effect of alterations in external calcium had no effect on permeability in 15.5 degree-day eggs, but at 31 degree-days permeability appeared to increase as external calcium concentration fell.