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Reproduction and Development in Annelida by T. J. Pandian, Hardcover | Indigo Chapters
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Reproduction and Development in Annelida by T. J. Pandian, Hardcover | Indigo Chapters
From T. J. Pandian
Current price: $310.95
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Indigo
Reproduction and Development in Annelida by T. J. Pandian, Hardcover | Indigo Chapters
From T. J. Pandian
Current price: $310.95
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Size: 1 x 9.19 x 1.18
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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. Regenerative potency of annelids ranges from an organ to an entire worm from a single 'seminal' segment. The head, tail and both together can be regenerated 21, 42 and 20 times, respectively. However, the potency is limited to | Reproduction and Development in Annelida by T. J. Pandian, Hardcover | Indigo Chapters