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TITLE
CERTIFICATE
DECLARATION
ACKNOWLEDGEMENT
CONTENTS
GENERAL INTRODUCTION.
THE STUDY AREA: The Perumthenaruvi Region of Pamba River.
INTRODUCTION
Climate
Rainfall
Temperature
Soil
PART I: Systematics of the Fishes of Perumthenaruvi.
SYSTEMATICS
INTRODUCTION
MATERIALS AND METHODS.
DESCRIPTION OF THE SPECIES
DISCUSSION
TABLE: 1 SYSTEMATICS OF THE FISH SPECIES OF PERUMTHENARUVI
PART II: Physico-Chemical Features of Perumthenaruvi.
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSIOlN
THE NUTRIENTS
TABLE: 2 MONTHLY VARIATIONS OF RAINFALL (mm) IN PERUMTHENARUVI DURING THEPERIOD FROM APRIL 2001 TO MARCH 2002
TABLE: 3 MONTHLY VARIATIONS OF ATMOSPHERIC TEMPERATURE (OC) IN PERUMTHENARUVIDURING THE PERIOD FROM APRIL 2001 TO MARCH 2002
TABLE: 4 MONTHLY VARIATIONS OF WATER TEMPERATURE CC) IN PERUMTHENARUVI DURING THEPERIOD FROM APRIL 2001 TO MARCH 2002
TABLE: 5 MONTHLY VARIATIONS OF pH IN PERUMTHENARUVI DURING THE PERIODFROM APRIL 2001 TO MARCH 2002
TABLE: 6 MONTHLY VARIATIONS OF DISSOLVED OXYGEN (mg.l-) IN PERIJMTIIICNARIJVI DIJRlNGTHE PERIOD FROM APRIL 2001 TO MARCH 2002
TABLE: 7 MONTHLY VARIATIONS OF SILICATE (pg atel-) IN THE PERUMTHENARUylDURING THE PERIOD FROM APRIL 2001 TO MARCH 2002
TABLE: 8 MONTHLY VARIATIONS OF PHOSPHATE (pg at.^) IN THE PERUMTHENARUVI DURING THEPERIOD FROM APRIL 2001 TO MARCH 2002
TABLE: 9 MONTHLY VARIATIONS OF NITRATE NITROGEN (pg at.1-) IN THE PERUMTHENARUVIDURING THE PERIOD FROM APRIL 2001 TO MARCH 2002
TABLE: 10 MONTHLY VARIATIONS OF SULPHATE (pg at.1.) IN THE PERUMTHENARUVIDURING THE PERIOD FROM APRIL 2001 TO MARCH 2002
PART III: Distribution of the Fishes of Perumthenaruvi.
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSIONS
TABLE: 11 DESCRIPTION OF CATEGORIES USED IN MEASURING STREAM HABITAT
TABLE: 12 DESCRIPTION OF SAMPLING STATIONS
TABLE: 13 NUMBER AND PERCENTAGE OF RELATIVE ABUNDANCE OF THE SPECIESRECORDED FROM HABITAT 1
TABLE: 14 NUMBER AND PERCENTAGE OF RELATIVE ABUNDANCE OF THE SPECIES RECORDED FROM HABITAT I1
TABLE: 15 NUMBER AND PERCENTAGE OF RELATIVE ABUNDANCE OF THE SPECIES RECORDED FROM HABITAT 111
TABLE: 16 NUMBER AND PERCENTAGE OF RELATIVE ABUNDANCE OF THE SPECIES RECORDED FROM HABITAT IV
TABLE: 17 NUMBER AND PERCENTAGE OF RELATlVE ABUNDANCE OF THE SPECIES RECORDED 171<0hl HAI~ILAIV
PART IV: Feeding Ecology of the Dominant Fishes of Perumthenaruvi.
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
TABLE: 18 POSITION IN THE WATER BODY AND SUBSTRATEPREFERENCE OF THE COMMON FISH SPECIES
TABLE: 19 MEASUREMENT OF HEAD CHARACTERS ASSOCIATED WITH FEEDING OF THE COMMON SPECIES
PART V: Benthic Fishes of Perumthenaruvi.
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
CONCLUSION
SUMMARY
REFERENCES
LIST OF TABLES
FIGURES 1 -14.
PLATES I -VII.
APPENDIX