TY  - BOOK
AU  - Ullah,MdEkram
AU  - Lin,Chang Kwei
AU  - Little,David C.
AU  - Hambrey,John B.
ED  - Government of Bangladesh/ Asian Development Bank (ADB),
TI  - Acclimation and culture of Penaeus monodon at low salinities in closed water system
T2  - Thesis
PY  - 1995///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Penaeus monodon
KW  - Shrimp culture
N1  - A Thesis Submitted in Partial Fulfilment of the Requirement for the Degree of  Master of Science, School of Environment, Resources, and Development; Thesis (M.Sc.) - Asian Institute of Technology, 1995
N2  - Three short experiments were conducted to determine the survival of Penaeus  monodon postlarvae (PL20 ) in abrupt change to salinities from seawater ( 35 ppt)  to freshwater and through 5 ppt and 1 ppt stepwise dilution over a period of 4-7  hours. The abrupt change of salinity resulted in 100 % mortality, while 100 3  survival was recorded at 1 ppt when the animals were allowed to stay relatively  longer period of acclimation with minimum ranges of salinity changes.  Following the survival test, shrimps were reared at different 2 salinities  (0 , 1 , 2, 3, 4 and 20 ppt) for 75 days at a density of 40 shrimps/m in closed  system.  Results obtained from the rearing trials showed that growth and survival  were not significantly different among the treatments. Near est mean weight was  obtained from all the test salinities ranging from 6 . 06 ±. 38 g at 20 ppt and  6.62 ± .27 g at 4 ppt. The overall survival was low ( 30-40 %} registering the  highest at 0 ppt and the lowest at 3 ppt.  The apparent FCR values varied from 2. 5 to 2 . 9 among the treatments. Temperature ( 0 c), dissolved oxygen (mg/l), and pH played no significant  difference within the treatments but total NH3 -N (mg/l) and TSS (mg/l)  concentrations were significantly higher in treatment 1 ( 20 ppt) than the rest  of the treatments
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B15216
ER  -