MORPHOLOGY AND GENERAL REPRODUCTIVE STAGES OF ...

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DECLARATION I hereby declare that the thesis is based on my original work except for quotations and citations which have been duly acknowledged. I also declare that it has not been previously or concurrently submitted for any other degree at UPM or other institutions. -------------------------------------- MOHD ZAFRI BIN HASSAN Date: 15 February 2007 x
TABLE OF CONTENTS DEDICATION ABSTRACT ABSTRAK ACKNOWLEDGEMENTS APPROVAL DECLARATION LIST OF TABLES LIST OF FIGURES LIST OF ABBREVEATIONS Page ii iii v vii viii x xiii xv xix 1. INTRODUCTION 1.1 Background of Patin buah in Malaysia 1.2 Statement of problems 1.3 Significance of the study 1.4 Objectives 1 2 3 4 2. LITERATURE REVIEWS 2.1 Taxonomy 2.2 Distribution of the family Pangasiidae 2.3 Catfishes as an Economic commodity 2.4 Morphological characters of the genus Pangasius nasutus 2.5 The biology of catfishes 2.6 Reproductive dynamics 2.6.1 Spawning pattern and cycle of ovarian development in catfishes 2.6.2 Testicular development of catfishes 2.7 Histology of the gonadal development 6 9 11 12 14 15 17 19 20 3. MORPHOLOGICAL VARIATIONS BETWEEN Pangasius nasutus AND Pangasius conchophilus 3.1 Introduction 3.2 Materials and methods 3.2.1 Study area 3.2.2 Samples collection 3.2.3 Sampling methods 3.2.4 Morphometric and meristic characters 3.2.5 Statistical analysis 24 25 25 26 27 31 35 xi
Page 1 and 2: UNIVERSITI PUTRA MALAYSIA MORPHOLOG
Page 3 and 4: MORPHOLOGY AND GENERAL REPRODUCTIVE
Page 5 and 6: Abstract of thesis presented to the
Page 7 and 8: Abstrak tesis yang dikemukakan kepa
Page 9 and 10: ACKNOWLEDGEMENTS In the name of All
Page 11: This thesis submitted to the Senate
Page 15 and 16: LIST OF TABLES Table Page 1 Subgene
Page 17 and 18: LIST OF FIGURES Figure 1 Taxonomic
Page 19 and 20: 24 Nucleolar stage. Chromatin nucle
Page 21 and 22: LIST OF ABBREVIATIONS Analysis of V
Page 23 and 24: A number of species of the family P
Page 25: Reproductive biology has served num

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