Reproduction and Development in Annelida

Reproduction and Development in Annelida
Author :
Publisher : CRC Press
Total Pages : 488
Release :
ISBN-10 : 9780429582585
ISBN-13 : 0429582587
Rating : 4/5 (587 Downloads)

Book Synopsis Reproduction and Development in Annelida by : T. J. Pandian

Download or read book Reproduction and Development in Annelida written by T. J. Pandian and published by CRC Press. This book was released on 2019-01-30 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 ~1% of polychaetes and Heterogamatic sex determination is reported to occur only in six polychaete species, although karyotype is known for 83 annelid species. In temperate polychaetes, a dozen neuroendocrines, arising mostly from the ‘brain’ regulates reproductive cycle. A complete chapter devoted to vermiculture, (i) recognizes the fast-growing candidate species, (ii) distinguishes 'layers' from 'brooders', (iii) indicates that the harvest of oligochaetes may reduce the input of nitrogenous fertilizer in the ricefield, and (iv) explores the scope for increasing wealth from waste.


Reproduction and Development in Annelida Related Books

Reproduction and Development in Annelida
Language: en
Pages: 488
Authors: T. J. Pandian
Categories: Medical
Type: BOOK - Published: 2019-01-30 - Publisher: CRC Press

DOWNLOAD EBOOK

This book is a concise informative elucidation of all aspects of reproduction and development in annelids covering from arenicola to tubifex. Annelids flourish
Reproductive Strategies and Developmental Patterns in Annelids
Language: en
Pages: 314
Authors: Adriaan W.C. Dorresteijn
Categories: Science
Type: BOOK - Published: 2013-04-18 - Publisher: Springer Science & Business Media

DOWNLOAD EBOOK

The fascination of the Annelida to scientists lies in the beauty of their structures and the functionality of their body plan, the tremendous adaptive radiation
Annelids in Modern Biology
Language: en
Pages: 384
Authors: Daniel H. Shain
Categories: Science
Type: BOOK - Published: 2009-04-22 - Publisher: John Wiley & Sons

DOWNLOAD EBOOK

Annelids offer a diversity of experimentally accessible features making them a rich experimental subject across the biological sciences, including evolutionary
Annelida Basal Groups and Pleistoannelida, Sedentaria I
Language: en
Pages: 492
Authors: Günter Purschke
Categories: Science
Type: BOOK - Published: 2019-03-18 - Publisher: Walter de Gruyter GmbH & Co KG

DOWNLOAD EBOOK

This book is the first in a series of 4 volumes in the Handbook of Zoology series about morphology, anatomy, reproduction, development, ecology, phylogeny and s
Concepts of Biology
Language: en
Pages: 0
Authors: Samantha Fowler
Categories:
Type: BOOK - Published: 2023-05-12 - Publisher:

DOWNLOAD EBOOK

Black & white print. Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirem