Table Of Contents

PREFACE ix

1 FEMALE GENITAL SYSTEMS OF FISH 1

1.1 Introduction 1

1.2 Origin of the Genital Systems 2

1.3 Anatomy of the Female Genital System 4

1.4 Ovary 5

2 OVARIAN FOLLICLES 67

2.1 Introduction 67

2.2 Stages of Oocyte Development 68

2.2.1 Primary Growth 69

Chromatin-nucleolus stage 69

Perinucleolus phase 70

2.2.2 Cortical AlveolusStage 71

2.2.3 Vitellogenesis 72

2.2.4 Maturation 75

2.3 The Oocyte Envelopes 78

2.3.1 PrimaryEnvelope 78

2.3.2 SecondaryEnvelopes 80

2.4 Follicular Epithelium 82

2.5 Theca and the Ovarian Stroma 87

3 OVULATION 209

3.1 Introduction 209

3.2 Atretic Follicles, Postovulatory Follicles, and Corpora Lutea 211

3.2.1 Atretic Follicles 211

3.2.2 Postovulatory Follicles 213

3.3 Follicular Steroidogenesis 217

3.4 Chorion 219

3.5 Micropyle 222

4 EVENTS ASSOCIATED WITHFERTILIZATION 285

4.1 Introduction 285

4.2 OolemmaandtheCorticalOoplasm 285

4.3 Cortical Alveoli 286

4.4 Fertilization 287

4.5 Cortical Reaction 289

4.6 Fateof AlveolarMembrane 290

4.7 Perivitelline Space 291

4.8 FormationoftheChorion 291

4.9 Block to Polyspermy 292

5 OVIDUCTS ANDOVIPARITY 335

5.1 Oviducts 335

5.2 OviductalGlandandEggCapsule 337

5.3 Uterus in Elasmobranchs 341

6 VIVIPARITY 391

6.1 Introduction 391

6.2 ViviparityinElasmobranchs 392

6.2.1 Aplacental Viviparity in Elasmobranchs 392

6.2.2 YolksacPlacentaofElasmobranchs 394

6.3 Viviparity in Coelacanths 400

6.4 Viviparity in Teleosts 401

6.4.1 Follicular Gestation 402

6.4.2 Luminal Gestation 404

Ovarian Luminal Epithelium 404

Embryotroph 406

Embryonic Absorptive Epithelia: Trophotaeniae 407

Other Embryonic Absorptive Structures 408

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