Effect of temperature on the development, growth, survival and settlement of green mussel Perna viridis (Linnaeus, 1758)

摘要

The e¡ect of temperature on the development,udgrowth, survival and settlement of Perna viridis wasudstudied under controlled conditions to provide informationudneeded for the development of commercialudhatchery technology for green mussel P. viridis. Totaludmortality of the larvae occurred after 24 h at temperaturesudof 33 1C and 35 1C. At 24 1C, larvae tookudlonger to settle than at temperatures of 27 1C, 29 1Cudand 31 1C. For optimum larval development (8^13 h),udgrowth (17.270.84 mmday^1) and survival (55.27ud0.84%), a hatchery rearing temperature of 31 1C isudrequired. For settlement no signi¢cant di¡erenceudwas seen between the percentage settlement atud29 1C (49.373.34%) and 31 1C (45.871.76%). However,udthe process of settlement began and ended earlierudat 29 1C (from15 to18 days) thanat 31 1C (from18udto 20 days). Thus for larval settlement a temperatureudof 29 1C is recommended.