Development of the common dentex (Dentex dentex) eggs in relation to temperature

Embryonic development of common dentex (Dentex dentex) was investigated at nine different constant water temperatures (8(degree) C, 10(degree)C, 12(degree)C, 14(degree)C, 16(degree)C, 18(degree)C, 20(degree)C, 22(degree)C and 24(degree)C). The observed effects were compared using of regression analysis. Constant water temperatures between 12(degree)C and 18(degree)C were found to support successful embryonic development. A negative relationship between the rate of embryonic development and incubation temperature was observed. While embryonic development was completed within this range (12(degree)C-18(degree)C), there was no cell division at water temperatures of 8(degree)C and 24(degree)C. Total mortalities were observed at the 128 cleavage stage at a temperature of 10(degree)C, and after the beginning of gastrulation at 20(degree)C and 22(degree)C.