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Reproductive biology and phylogeny of Annelida /
Annelida is a diverse group of animals, commonly referred to as segmented worms and currently comprising around 14000 described species. Found in most marine and freshwater areas, annelids have also successfully occupied many subterranean habitats. This volume documents annelid reproduction in the c...
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Enfield, NH :
Science Publishers,
©2006.
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| Colección: | Reproductive biology and phylogeny ;
v. 4. |
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Preface to the Series; Preface to this Volume; LITERATURE CITED; Contents; I-General Reproduction and Phylogeny ; 1. Annelid Phylogeny and Systematics ; 1.1 INTRODUCTION; 1.2 MONOPHYLY OF ANNELIDA; 1.2.1 Morphology and Monophyly; 1.2.2 Molecular Sequence Data; 1.3. ANNELIDA SUBGROUPS; 1.3.1 Pogonophora, Vestimentifera and Echiura; 1.3.2 Clitellata, Hirudinida and Oligochaetes; 1.3.3 Polychaetes; 1.4 SYSTEMATIZATION USED IN THIS VOLUME; 1.5 ROOTING THE ANNELID TREE; 1.6 ACKNOWLEDGEMENTS; 1.7 LITERATURE CITED; 2. Oogenesis; 2.1 INTRODUCTION; 2.2 OVARIAN MORPHOLOGY AND PATTERNS OF OOGENESIS.
- 2.2.1 Introduction2.2.2 Patterns of Oogenesis ; 2.3 OOGENESIS: PREVITELLOGENESIS; 2.4 OOGENESIS: VITELLOGENESIS; 2.5 PHYLOGENETIC IMPLICATIONS OF OOGENESIS; 2.6 CONCLUSIONS; 2.7 LITERATURE CITED; 3. Annelid Sperm and Spermiogenesis; 3.1 INTRODUCTION; 3.2 SPERMIOGENESIS; 3.3 SPERMATOZOA; 3.3.1 Sperm Terminology; 3.3.2 Recent Descriptions of Annelid Sperm Ultrastructure; 3.4 SPERM OF SOME UNUSUAL ANNELIDS; 3.4.1 Diurodrilus; 3.4.2 Aeolosomatidae and Potamodrilus; 3.4.3 Siboglinidae; 3.4.4 Myzostomida; 3.5 ANNELID SPERM AND SYSTEMATICS; 3.6 WHAT IS THE PLESIOMORPHIC SPERM TYPE IN ANNELIDA?
- 3.7 ACKNOWLEDGEMENTS3.8 LITERATURE CITED; 4. Sexual Strategies and Mating Systems; 4.1 INTRODUCTION; 4.2 SIMULTANEOUS HERMAPHRODITISM; 4.3 SEQUENTIAL HERMAPHRODITISM; 4.4 GONOCHORISM; 4.5 MIXED STRATEGIES AND FACULTATIVE CHANGE OF GENDER; 4.6 PARENTAL CARE; 4.7 LITERATURE CITED; 5. Early Annelid Development, A Molecular Perspective ; 5.1 INTRODUCTION; 5.2 THE EGG; 5.3 CLEAVAGE; 5.4 GASTRULATION AND GUT DEVELOPMENT; 5.5 SEGMENTATION; 5.6 OTHER GENE EXPRESSION PATTERNS DURING MORPHOGENESIS: TWO CASE STUDIES OF THE CANDIDATE GENE APPROACH; 5.6.1 Engrailed; 5.6.2 Hox Genes.
- 5.7 SUMMARY AND PROSPECTS FOR FUTURE RESEARCH5.8 ACKNOWLEDGEMENTS; 5.9 LITERATURE CITED; 6. Annelid Larval Morphology; 6.1. INTRODUCTION; 6.2. CILIATED BANDS OF LARVAE; 6.3 TERMS TO DESCRIBE ANNELID LARVAE; 6.4 LECITHOTROPHY AND LARVAL FEEDING; 6.5. METAMORPHOSIS; 6.6 EVOLUTION OF ANNELID LARVAE; 6.6.1 Introduction; 6.6.2 Downstream Feeding with Meniscotroch (four kinds?); 6.6.3 Opposed-band Larval Feeding (six kinds?); 6.6.4 Other Downstream Feeding Mechanisms (four kinds?); 6.7 SUMMARY AND CONCLUSIONS; 6.8 ACKNOWLEDGEMENTS; 6.9 LITERATURE CITED; 7. Larval Ecology of the Annelida.
- 7.1 INTRODUCTION7.2 LARVAL ECOLOGY; 7.2.1 Dispersal Potential and Abiotic Factors; 7.2.2 Larval Trophic Ecology; 7.2.3 Site of Development; 7.2.4 Developmental Variation at Generic and Species Level; 7.2.5 Consequences of Developmental Modes; 7.2.6 Settlement and Metamorphosis; 7.2.6.1 Introduction; 7.2.6.2 Settlement; 7.2.6.3 Metamorphosis; 7.2.7 Cues for Settlement and Metamorphosis; 7.2.7.1 Introduction; 7.2.7.2 External non-chemical cues; 7.2.7.3 External chemical cues ; 7.2.7.4 Cues from bacteria; 7.2.7.5 Cues from diatoms; 7.2.7.6 Environmental impact on bioactivity of biofilms.