Introduction |
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xiii | |
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1 Reproductive Patterns of Gymnolaemate Bryozoa: General Overview and Comparative Analysis |
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1 | (114) |
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1.1 Brief Historical Overview of Studies on Gymnolaemate Gonado- and Gametogenesis and Fertilization |
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1 | (3) |
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1.2 Reproductive Patterns of Bryozoa |
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4 | (44) |
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1.2.1 Sexual Structure of Colonies |
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5 | (8) |
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13 | (4) |
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1.2.3 Reproductive Pattern I in Cheilostomata |
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17 | (1) |
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1.2.4 Reproductive Pattern II in Cheilostomata |
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18 | (22) |
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1.2.5 Reproductive Pattern III in Cheilostomata |
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40 | (3) |
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1.2.6 Reproductive Pattern IV in Cheilostomata |
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43 | (4) |
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1.2.7 Reproductive Pattern V in Cheilostomata |
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47 | (1) |
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47 | (1) |
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1.3 Comparative Analysis of Sexual Reproduction in Cheilostomata |
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48 | (25) |
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1.3.1 Early Stages of Oogenesis |
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48 | (1) |
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1.3.2 Ovary and Oogenesis in Non-brooding Species |
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49 | (2) |
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1.3.3 Structure of the Ovary in Brooding Cheilostomes |
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51 | (1) |
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1.3.4 Comparative Analysis of Oogenesis in Cheilostomata |
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52 | (4) |
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1.3.5 Matrotrophic Brooding |
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56 | (3) |
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1.3.6 Fertilization and Its Consequences |
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59 | (3) |
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62 | (1) |
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1.3.8 Polymorphism in Reproductive Zooids |
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63 | (3) |
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1.3.9 Evolution of Intertentacular Organ |
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66 | (7) |
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1.4 Future Research Directions |
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73 | (42) |
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1.4.1 Early Gonado- and Gametogenesis |
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73 | (1) |
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1.4.2 Site of Gonad Origin and Final Location |
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73 | (1) |
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1.4.3 Ovarian Structure and Functioning |
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74 | (1) |
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1.4.4 Origin of Ovary Cells |
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74 | (1) |
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74 | (1) |
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1.4.6 Origin of the Intertentacular Organ |
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74 | (1) |
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1.4.7 Dynamics of Colonial and Zooidal Sexual Structure and Life Cycles |
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74 | (32) |
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106 | (9) |
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2 Cheilostome Brood Chambers: Structure, Formation, Evolution |
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115 | (114) |
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2.1 History of Studies of Cheilostome Brood Chambers |
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115 | (9) |
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2.2 Classification and Terminology |
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124 | (7) |
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125 | (2) |
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2.2.2 Immersion of Brood Cavity |
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127 | (3) |
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130 | (1) |
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2.3 Structure and Development of Brood Chambers in Cheilostomata |
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131 | (17) |
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2.3.1 Brood Chambers of Calloporidae: Basic Type and Structural Diversity |
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131 | (6) |
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2.3.2 Structure and Development of Ovicells in Other Cheilostome Families |
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137 | (7) |
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2.3.3 Internal Brood Sacs |
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144 | (2) |
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146 | (1) |
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2.3.5 Acanthostegal Brood Chambers |
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147 | (1) |
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2.4 Evolution of Brood Chambers in Cheilostomata |
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148 | (18) |
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2.4.1 External Membranous Brood Sacs |
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148 | (1) |
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2.4.2 Origin of Brooding in Cheilostomata: Overview of the Major Hypotheses |
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149 | (2) |
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2.4.3 Early Stages in Ovicell Evolution |
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151 | (1) |
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2.4.4 Evolution of Ovicells in the Family Cribrilinidae |
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152 | (1) |
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2.4.5 Evolution of Ovicells in the Genera Monoporella and Macropora |
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153 | (1) |
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2.4.6 Acanthostegal Brood Chambers of Tendridae and Ovicells of Bellulopora |
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154 | (1) |
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2.4.7 Evolution of the Unitary Ooecium and Frontal Shield |
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154 | (3) |
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2.4.8 Major Trends in the Evolution of Cheilostome Ovicells |
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157 | (8) |
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2.4.9 Brood Chambers in the Scrupariidae, Thalamoporellidae and Alysidiidae |
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165 | (1) |
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166 | (63) |
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221 | (8) |
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3 Evolution of Reproductive Patterns in Cheilostomata |
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229 | (54) |
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3.1 Modification of Oogenesis and Its Evolutionary Consequences |
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230 | (13) |
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3.1.1 Changes in Oogenesis and Evolution of the Lecithotrophic Larva |
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230 | (6) |
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3.1.2 Other Consequences of Modifications to Oogenesis |
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236 | (7) |
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3.2 Early Fertilization and Origin of Nurse Cells |
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243 | (2) |
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3.3 Evolution of Matrotrophic Incubation in Cheilostomata |
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245 | (7) |
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3.3.1 Origin of Placentotrophy |
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245 | (3) |
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3.3.2 Multiple Origins of Placentotrophy in Cheilostomata |
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248 | (1) |
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3.3.3 Plausibility of an Alternative Scenario |
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248 | (1) |
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3.3.4 Origin of Viviparity in the Family Epistomiidae |
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249 | (1) |
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3.3.5 Adaptive Importance of Placental Analogues in Cheilostomata |
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250 | (1) |
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3.3.6 Prerequisites and Role of Embryo in Evolution of Matrotrophy |
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251 | (1) |
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3.3.7 Matrotrophy and Evolution of Sexual Polymorphism in Cheilostomata |
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251 | (1) |
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3.3.8 Distribution of Placentotrophy in Bryozoa |
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251 | (1) |
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3.4 Causes, Stages and Consequences of Transition to Endotrophy in Cheilostomata and Ctenostomata |
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252 | (17) |
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3.4.1 Lecithotrophy and Brooding |
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252 | (5) |
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3.4.2 Fertilization and Modification of Oogenesis |
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257 | (1) |
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3.4.3 Oviposition in Cheilostome Brooders |
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258 | (1) |
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3.4.4 Evolution of Sexual Reproduction Within the Order Ctenostomata |
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258 | (6) |
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3.4.5 Environmental Factors and Radiation of Cheilostomata in the Late Cretaceous |
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264 | (3) |
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3.4.6 Possible Consequences of Transition to the New Reproductive Pattern |
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267 | (2) |
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3.5 Evolution of Sexual Reproduction in Bryozoa |
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269 | (2) |
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271 | (12) |
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272 | (11) |
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283 | (56) |
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Appendix I History of Research on Sexual Reproduction in Gymnolaemate Bryozoa |
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283 | (40) |
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283 | (1) |
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Eighteenth Century First Microscopic Observations and Suggestions |
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283 | (2) |
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Nineteenth Century Primary Accumulation of Data and First Reviews |
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285 | (10) |
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First Half of the Twentieth Century -- More Results |
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295 | (8) |
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Second Half of the Twentieth Century: Extensive Reviews and New Discoveries |
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303 | (11) |
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314 | (9) |
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Appendix II Materials and Methods |
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323 | (16) |
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323 | (6) |
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Diagnoses for the Newly Established Taxa |
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329 | (1) |
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330 | (9) |
Species Index |
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339 | (10) |
Subject Index |
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349 | |