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2. Contents
1. Introduction
2. Experimental procedures
3. SAS procedures
4. Result and discussion
5. Conclusion
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3. Salinity
Osmoregulation Adaptation
20%-50% Energy
1. Conditional Factor (Weight/Length Ratio)
2. Inhalation Rate (time/minute)
3. Operculum/Body Length Ratio
4. Feed Intake (% body weight/day)
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4. Seawater 33 ppt
Strong (>6 hour)
Less strong (4-6 hour)
Weak (<4 hour)';
1. Conditional Factor (Weight/Length Ratio)
2. Inhalation Rate (time/minute)
3. Operculum/Body Length Ratio
4. Feed Intake (% body weight/day)
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5. Inhalation rate Conditional factor
(Weight/length)
Ratio operculum/body length
Feed intake
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6. Variables Strong Less strong Weak
Conditional factor
Operculum body length ratio
Inhalation rate
Feed intake
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8. SAS procedures
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10. Strong = 18.6%
Less strong = 27.6%
Weak =54%
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11. Less strong and weak are closer than with the strong one
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12. Ratio operculum and body length is not significant different
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13. 99% variance is explained by first component
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14. Conditional factor vs Inhalation rate and feed intake
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16. Inhalation rate
Food intake
Conditional factor
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17. Discriminant analysis shows that 3 of 4 variables of body performance significantly
able to classify Red Tilapia based on their salinity tolerance.
Ratio operculum and body length is not significant different to distinguish 3 population
but conditional factor, inhalation rate and feed intake show significant different.
Conditional factor have negative correlation with inhalation rate and feed intake
More tolerant Tilapia to saline water have relatively low conditional factor and high
inhalation rate and feed intake.
Weak and less strong Tilapia to saline water are correlatively closer than strong
Tilapia.
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