03308cas a2200385 a 4500 20260818095114.0 110920s1989 th uu|m rtt 0| a1eng d .b10690840 AIT Thesis no. AE-89-44 Baybay, Lurraine H. The effect of temperature and salinity on penaeus monodon postlarvae, with observations on commercial hatchery techniques in relation to postlarval quality Bangkok : Asian Institute of Technology, 1989 97 p. Thesis ; no. AE-89-44 A thesis submittted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1989 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. Shrimp culture Machintosh, Donald J., Chairperson Lin, Chang Kwei, Examination Committee Little, David C., Examination Committee The United Kingdom, Scholarship Donor Asian Institute of Technology. Thesis ; no. AE-89-44 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17895 .b10690840 mnait s 240402 2 951012 m a s 4 mnait mnarc 20 40 Barcode : 30050003004529 CREATED : 1994-05-19 RECORD # : i10887982 LPATRON : 1012494 LCHKIN : 2001-06-21 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050120364640 CREATED : 2016-05-27 RECORD # : i12997742 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 34716 34716 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-89-44 30050003004529 2026-08-18 09:51:14 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. AE-89-44 30050120364640 2026-08-18 09:51:14 2026-08-18 40