STUDIES ON CHANGES OF SODIUM, POTASSIUM AND CALCIUM IN WHITE MUSCLES AND RED MUSCLES OF TWO SPECIES OF FISHES OFF JODIA COAST IN GULF OF KUTCH

The rise in sodium content is recorded in white muscles of the both the species during spawning period, it is related relation with the gonadial activities during breeding period and the active gametogenesis. Potassium content in white muscles of E.tetradectylum gradually increase during beginning of spawning and spawning period and in case of L.tade potassium content in white muscles show increase trend during pre-spawning period and moderates level in found during spawning. The calcium content in white muscles of E.tetradectylum show higher level during pre-spawning period and in case of L.tade the calcium level gradually increase during pre-spawning period. The sodium content in red muscles of both the species shows higher level during pre-spawning and spawning period but in case of L.tade sodium level significantly decrease during spawning period. The potassium content of E.tetradectylum level increase during pre-spawning and spawning period and incase of L.tade potassium level decreases significantly during spawning and it shows higher level during post-spawning period. The calcium content in red muscles of E.tetradectylum show up and down level throughout year and in case of L.tade calcium level higher during the pre-spawning and decrease during spawning period.