Reproduction and Development in Annelida: Series on: Reproduction and Development in Aquatic Invertebrates / Edition 1

ISBN-13: 9780367187453 Publisher: Taylor & Francis Publication date: 02/04/2019 Series: Reproduction and Development in Aquatic Invertebrates Pages: 292 Product dimensions: 6.12(w) x 9.19(h) x (d) This book is a concise informative elucidation of all aspects of reproduction and development in annelids covering from arenicola to tubifex. Annelids flourish between 4,900 m depth to 2,000 m altitude; some of them occur in unusual habitats like hydrothermal vents and subterranean aquatic system (stigobionts). A few have no gut and acquire adequate nutrients through osmotrophism and/or engaging symbiotic microbes. In the absence of exoskeleton to escape predation, the 17,000 speciose annelids have explored bewildering modes of reproduction; not surprisingly, 42–47% of them are brooders. With 13,000 species, polychaetes are gonochores but some 207 species of them are hermaphrodites. Clitellates are all hermaphrodites; of them, 76 species are parthenogens, of which 56 are earthworms. Reg