Salinity Tolerance of Fertilized Eggs and Larval Survival in the Flsh Sillago sihama

Abstract

Salinity tolerance of fertilized eggs and larval survival of the fish Sillago siharna (Forskbl) were compared using fertilized eggs from induced and natural spawnings, and eggs from adults acclimated to lower salinities. Fertilized eggs at the blastomere stage were more sensitive to salinity change than those at other development stages. Fertilized eggs from natural spawning were more tolerant to salinity change than those from induced spawning. Fertilized eggs from adults acclimated to lower salinities showed increased tolerance to lower salinities. Larvae survived longer in lower than in higher salinities.