声明
Table of Contents
ABSTRACT
摘要
ABBREVIATIONS
CHAPTER 1 Literature Review and Study Plan
1 General review of Tilapia aquaculture production in China
2 Overview of fish health
2．1 The stress and immune system in fish
2．2 Stressors in fish farming
3 Parameters of serum as a stress response in fish health
3．1 Cortisol and fish health
3．2 The immune system and fish health
4 Efiect of nitrite on fish
4．1 Exposure to nitrite
4．2 Factors affecting toxicity of nitrite
5 The role of salinity in fish
5．1 The use and influence of salinity in aquaculture
5．2 Cultivation of tilapia in saline water
6 Justification of the study
7 Aims of the study
8 Hypothesis of the study
CHAPTER 2 Effect of salinity levels on the stress response (cortisol) in GIFT strain Nile tilapia (Oreochromis niloticus) under acute nitrite stress
1 Introduction
2 Materials and methods
2．1 Experimental fish and acclimatization process
2．2 Experimental design
2．3 Sample collection
2．4 Physiological measurements
2．5 Statistical analysis
3 Results
3．1 Effects of salinity levels on the serum cortisol under acute nitrite stress
4 Discussion
4．1 Effect of salinity levels on the serum cortisol under acute nitrite stress
5 Conclusion
CHAPTER 3 Effect of salinity levels on the immunity in GIFT strain Nile tilapia (Oreochromis niloticus) under acute nitrite stress
1 Introduction
2 Materials and methods
2．1 Experimental fish and acclimatization process
2．2 Experimental design
2．3 Sample collection
2．4 Physiological measurements
2．5 Statistical analysis
3 Results
3．2 Effect of salinity levels on the lysozyme serum levels under acute nitrite stress
3．3 Effect of salinity levels on the IgM serum levels under acute nitrite stress
3．4 Effect of salinity levels on the SOD serum levels under acute nitrite stress
4 Discussion
4．1 Effect of salinity levels on the C3，lysozyme，IgM and SOD (immunity response) serum levels under acute nitrite stress
5 Conclusion
Conclusion of the whole study
References
Appendix
Acknowledgements
Seminars／symposiums
