| Author | Baybay, Lurraine H. |
| Call Number | AIT Thesis no. AE-89-44 |
| Subject(s) | Shrimp culture
|
| Note | A thesis submittted in partial fulfillment of the requirements
for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | In an attempt to understand the role of temperature and
salinity on the survival, tolerance, behaviour and growth of
Penaeus monodon postlarvae, 72- hour static water survival tests
and a 3-week growth trial were conducted. On- farm observations
were also made in a commercial hatchery to aid in assessing
relationships between production techniques and postlarval
quality.
It has been found that in general, ~ monodon postlarvae,
age PL.2o to PL.4o possess broad tolerance to salinity from 5-40
ppt and to temperature in the range 20- 36 "C. Results al so
revealed that a 48- hour acclimation to low (10 ppt ) and high ( 36
ppt ) salinity can extend the tolerance range to 5 - 50 ppt and
postpone time to 1 ethal doses ( LD!i o ) in concentratians beyond the
range of tolerance i . e. 0 , 2 and 55 ppt.
Specific combinations of salinity and temperature showed
strong influence of temperature on postlarval salinity
tolerance . Extreme levels of temperature ( 20-22"C and 37-39°C)
served to narrow the salinity tolerance range and accelerate time
to LD5o. Moreover, temperature at a maintained salinity in the
range of 20- 36 ppt showed a more distinct effect on survival and
growth than salinity changes at a particular temperature . A
combination of low salinity ( 20 ppt) and high temperature ( 34-
36 °c) promoted the fastest growth with a weight gain of 117 mgs
and the best food utilization. However, a combination of low
salinity ( 20 ppt ) and 10111 temperature (28- 30°C) appeared best for
survival. |
| Year | 1989 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Machintosh, Donald J.
; |
| Examination Committee(s) | Lin, Chang Kwei ;Little, David C. ; |
| Scholarship Donor(s) | The United Kingdom; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1989 |