Effect of temperature on the development, growth, survival and
settlement of green mussel Perna viridis (Linnaeus, 1758)
R.
Manoj Nair, K.K. Appukuttan-2003
Aquaculture
Research, 34(12):
1037
Abstract:
The
effect of temperature on the development, growth, survival and settlement of
Perna viridis was studied under controlled conditions to provide
information needed for the development of commercial hatchery technology for
green mussel P. viridis. Total mortality of the larvae occurred after
24 h at temperatures of 33°C and 35°C. At 24°C, larvae took longer
to settle than at temperatures of 27°C, 29°C and 31°C. For optimum larval
development (8-13 h), growth (17.2±0.84 µm day-1)
and survival (55.2±0.84%), a hatchery rearing temperature of 31°C is
required. For settlement no significant difference was seen between the
percentage settlement at 29°C (49.3±3.34%) and 31°C (45.8±1.76%).
However, the process of settlement began and ended earlier at 29°C (from 15
to 18 days) than at 31°C (from 18 to 20 days). Thus for larval settlement a
temperature of 29°C is recommended.
(Aquaculture Research Scientist, U.S.D.A.
Land Grant, Cooperative Research & Extension, College of the Marshall
Islands, PO Box 1258, Majuro, MH 96960, Republic of the Marshall Islands.
E-mail: manojnair999@yahoo.com)