Title Page
Contents
Abstract 9
1. INTRODUCTION 11
1.1. Background of study 11
1.2. Problem statement 15
1.3. Hypothesis 16
1.4. Objective of study 17
1.5. Justification of study 17
1.6. Significance of study 18
2. MATERIALS AND METHODS 19
2.1. Design of experiment 19
2.1.1. Source of juveniles worms 19
2.1.2. Weighing of juveniles worms 21
2.1.3. Preparing experiment boxes 22
2.1.4. Sediment collection 23
2.1.5. System set-up 23
2.1.6. Feeding of worms 26
2.1.7. Experimental water preparation 27
2.2. Water quality analysis 29
2.3. Data collection 29
2.4. Statistical analysis 32
3. RESULTS 33
3.1. Survival rate of worms 33
3.2. Growth performance of worms 34
3.3. Water quality analysis 38
4. DISCUSSION AND CONCLUSION 44
REFERENCES 50
Table 1. Weight gain, specific growth rate (SGR) and survival rate... 36
Table 2. One-way ANOVA test on effect of salinity on growth performance... 37
Table 3. One-way ANOVA test on effect of salinity on survival of... 37
Fig. 1. Major morphology features of a generalized polychaete. 12
Fig. 2. Specimen collection. 20
Fig. 3. Weighing of juvenile worms. 21
Fig. 4. Cubic boxes used. 22
Fig. 5. A schematic diagram of box used in the experiment. 23
Fig. 6. Experiment set-up. 25
Fig. 7. A schematic diagram of the experiment set-up. 26
Fig. 8. NRD 3/5 larval diet used as feed in the experiment. 27
Fig. 9. Experimental water preparation. 28
Fig. 10. Collection of juvenile worms at the end of experiment. 30
Fig. 11. Survival rate of Marphysa sanguinea juveniles cultured at different... 34
Fig. 12. Growth performance of Marphysa sanguinea juveniles cultured at... 35
Fig. 13. Trend of pH at different salinity levels tested. 38
Fig. 14. Trend of dissolve oxygen at different salinity levels tested. 39
Fig. 15. Trend of alkalinity at different salinity levels tested. 40
Fig. 16. Trend of ammonia at different salinity levels tested. 41
Fig. 17. Trend of nitrite at different salinity levels tested. 42
Fig. 18. Trend of nitrate at different salinity levels tested. 43