Table of Contents

1 Design and relationships.- 1.1 Introduction.- 1.2 The orders: morphology and life cycles.- 1.3 Relationships and origins of the class and orders.- 2 Locomotion.- 2.1 Introduction.- 2.2 Mesoglea.- 2.3 Muscle.- 2.4 Sensory receptors.- 2.5 Nervous system.- 2.6 Locomotion.- 3 Feeding.- 3.1 Introduction.- 3.2 Cnidae.- 3.3 Types of prey.- 3.4 Contact with prey.- 3.5 Feeding behaviour.- 3.6 Feeding rates.- 4 Nutrition.- 4.1 Introduction.- 4.2 Digestion.- 4.3 Circulation and translocation.- 4.4 Uptake of dissolved organic material.- 4.5 Symbiosis.- 5 Metabolism.- 5.1 Introduction.- 5.2 Factors affecting oxygen consumption.- 5.3 Nitrogen excretion 131 5.3.1 Factors affecting rates of excretion.- 5.4 Osmotic and ionic regulation.- 6 Reproduction.- 6.1 Synopsis.- 6.2 Gametogenesis.- 6.3 Larval development.- 6.4 Polyp.- 6.5 Ephyra.- 7 Growth.- 7.1 Measurement of growth.- 7.2 Organic composition of scyphozoa.- 7.3 Growth curves.- 7.4 Starvation and regeneration.- 7.5 Conversion efficiencies.- 7.6 Dietary requirements.- 8 Physical ecology.- 8.1 Biomass.- 8.2 Mortality and adaptation to physical factors.- 8.3 Depth.- 8.4 Aggregation and horizontal migration.- 8.5 Zoogeography.- 9 Biological interactions.- 9.1 Prédation.- 9.2 Parasites.- 9.3 Associations.- 9.4 Bioluminescence.- 9.5 Trophic relationships.- Appendix: Classification of extant scyphozoa.- References.