Download or read book The Invertebrates Echinodermata the coelomate Bilateria written by Libbie Henrietta Hyman and published by . This book was released on 1940 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Invertebrates written by L. H. Hyman and published by . This book was released on 1992-01-01 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Invertebrates written by Libbie Henrietta Hyman and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Invertebrates written by Ashok Verma and published by Alpha Science Int'l Ltd.. This book was released on 2005 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an in depth coverage all major topics related with various invertebrates groups starting from Protozoa to Echinodermata, emphasizing their structure, function and adaptations. This book deals with important features like osmoregulation, nutrition, locomotion, reproduction of protozoa including disease producing protozoa and more.

Download or read book Microscopic Anatomy of Invertebrates Echinodermata written by Frederick W. Harrison and published by Wiley-Blackwell. This book was released on 1991 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 15 illustrated volumes of this series provide specific and exhaustive coverage of all major invertebrate phyla, offering detailed accounts of their gross, histological and ultrastructural anatomy. The individual volumes are arranged phylogenetically, beginning with the protozoa (defined herein as motile protists) and concluding with the invertebrate members of the phylum Chordata.

Download or read book The Echinodermata of New Brunswick written by William Francis Ganong and published by St. John, N.B. : Barnes. This book was released on 1888 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reproduction and Development in Echinodermata and Prochordata written by T. J. Pandian and published by CRC Press. This book was released on 2018-04-17 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Echinoderms and prochordates occupy a key position in vertebrate evolution. The genomes of sea urchin share 70% homology with humans. Researches on cell cycle in sea urchin and phagocytosis in asteroids have fetched Nobel Prizes. In this context, this book assumes immense importance. Echinoderms are unique, as their symmetry is bilateral in larvae but pentamerous radial in adults. The latter has eliminated the development of an anterior head and bilateral appendages. Further, the obligate need to face the substratum for locomotion and acquisition of food has eliminated their planktonic and nektonic existence. Egg size, a decisive factor in recruitment, increases with decreasing depths up to 2,000-5,000 m in lecithotrophic asteroids and ophiuroids but remains constant in their planktotrophics. Smaller ( 110 mm) asteroids generate planktotrophic eggs only. Publications on sex ratio of echinoderms indicate the genetic determination of sex at fertilization but those on hybridization, karyotype and ploidy induction do not provide evidence for heterogametism. But the herbivorous echinoids and larvacea with their gonads harboring both germ cells and Nutritive Phagocytes (NPs) have economized the transportation and hormonal costs on gonadal function. Despite the amazing potential just 2 and 3% of echinoderms undergo clonal reproduction and regeneration, respectively. Fission is triggered, when adequate reserve nutrients are accumulated. It is the most prevalent mode of clonal reproduction in holothuroids, asteroids and ophiuroids. However, budding is a more prevalent mode of clonal reproduction in colonial hemichordates and urochordates. In echinoderms, fission and budding eliminate each other. Similarly, autoregulation of early development eliminates clonal reproduction in echinoids and solitary urochordates. In pterobranchs, thaliaceans and ascidians, the repeated and rapid budding leads to colonial formation. Coloniality imposes reductions in species number and body size, generation time and life span, gonad number and fecundity as well as switching from gonochorism to simultaneous hermaphorditism and oviparity to ovoviviparity/viviparity.

Download or read book The Invertebrates Vol IV written by L. H. Hyman and published by . This book was released on 1955 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Invertebrates Echinodermata Vol 4 written by Hyman L. H. and published by . This book was released on 1992 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Invertebrates written by Libbie Henrietta Hyman and published by . This book was released on 1955 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Invertebrate Learning written by W. C. Corning and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Invertebrates Volume 4 Echinodermata written by and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Echinoderm Larvae written by Herbert Clifton Chadwick and published by . This book was released on 1914 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Echinodermata written by Valeria Matranga and published by Springer Science & Business Media. This book was released on 2005-10-24 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Members of the phylum Echinodermata are among the most familiar marine invertebrates. Forms such as the sea star have become virtually a symbol of sea life. Used in ancient oriental medicine as a source of bioactive compounds, sea cucumbers, sea stars and sea urchins are now used for the extraction and purification of cytotoxic, haemolytic, antiviral, antifungal, antifouling, antimicrobial and even anti-tumoural activities. In addition, of the five extant classes, sea urchins and sea cucumbers are important economic resources for current fishery and aquaculture. Molecular and cell biological techniques described in this book are, on the one hand, indicative of the improvements made over the years and, on the other, stress the need of their further exploitation for the sustainable production of bioactive compounds and their application in biomedicine.

Download or read book Invertebrates written by Hyman Libbie Henrietta and published by . This book was released on 1951 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Australian Echinoderms written by Timothy O'Hara and published by CSIRO PUBLISHING. This book was released on 2017-06 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: Echinoderms, including feather stars, seastars, brittle stars, sea urchins and sea cucumbers, are some of the most beautiful and interesting animals in the sea. They play an important ecological role and several species of sea urchins and sea cucumbers form the basis of important fisheries. Over 1000 species live in Australian waters, from the shoreline to the depths of the abyssal plain and the tropics to Antarctic waters. Australian Echinoderms is an authoritative account of Australia’s 110 families of echinoderms. It brings together in a single volume comprehensive information on the identification, biology, evolution, ecology and management of these animals for the first time. Richly illustrated with beautiful photographs and written in an accessible style, Australian Echinoderms suits the needs of marine enthusiasts, academics and fisheries managers both in Australia and other geographical areas where echinoderms are studied.

Download or read book The Invertebrates written by and published by . This book was released on 1955 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: