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Author: Herbert Clifton Chadwick
Publisher:
ISBN:
Category : Echinodermata
Languages : en
Pages : 64
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Book Description
Author: Herbert Clifton Chadwick
Publisher:
ISBN:
Category : Echinodermata
Languages : en
Pages : 64
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Book Description
Author: Theodor Mortensen
Publisher:
ISBN:
Category : Echinodermata
Languages : en
Pages : 80
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Book Description
Author: Michel Jangoux
Publisher: CRC Press
ISBN: 9789061916468
Category : Science
Languages : en
Pages : 312
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Book Description
Author: Eniwetok Marine Biological Laboratory
Publisher:
ISBN:
Category : Coral reef biology
Languages : en
Pages : 690
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Book Description
Author: Michel Jangoux
Publisher: CRC Press
ISBN: 1000111016
Category : Technology & Engineering
Languages : en
Pages : 379
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Book Description
Echinoderm Studies is a biennial series in which comprehensive surveys of selected topics are presented. A guiding principle of the series is to cover all aspects of echinoderm biology so as to promote a better comprehension of this group of animals.
Author: G. Czihak
Publisher: Springer Science & Business Media
ISBN: 3642659640
Category : Science
Languages : en
Pages : 719
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Book Description
Sea urchin eggs are objects of wonder for the student who sees them for the first time under the microscope. The formation of the fertil ization membrane after insemination, the beauty of mitotic cleavage, the elegant swimming of embryos, remain an esthetic pleasure even for the eyes of seasoned investigators. But sea urchin eggs have other, more practical, advantages: they lend themselves to surgical operation without difficulty and they heal perfectly; they can be obtained in very large amounts and represent thus an extremely favorable material for biochemists and molecular embryologists. It is not surprising that, in view of these exceptional advantages, sea urchin eggs have attracted the interest of innumerable biologists since O. HERTWIG discovered the fusion of the pronuclei (amphimixy), in Paracentrotus lividus, almost a century ago. The purpose of the present book is to present, in a complete and orderly fashion, the enormous amount of information which has been gathered, in the course of a hun dred years of sea urchin embryology. JOSEPH NEEDHAM, in 1930, was still able to present all that was known, at that time, on the biochemistry of all possible species of developing eggs and embryos in his famous "Chemical Embryology" (Cambridge University Press) . It would no longer be possible for one man to write a modern version of what was a "Bible" for the young embryologists of forty years ago.
Author: D. Williamson
Publisher: Springer Science & Business Media
ISBN: 9401580774
Category : Science
Languages : en
Pages : 235
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Book Description
Many biological facts are irreconcilable with the assumption that larvae and adults evolved from the same genetic stock. The author of this book draws attention to these, and presents his alternative hypothesis that larvae have been transferred from one taxon to another. In his previous book (Larvae and Evolution, 1992), the author used larval transfer to explain developmental anomalies in eight animal phyla. In the present book, he claims that the basic forms of all larvae and all embryos have been transferred from foreign taxa. This leads to a new, comprehensive theory on the origin of embryos and larvae, replacing the discredited 'recapitulation' theory of Haeckel (1866). Metamorphosis, previously unexplained, represents a change in taxon during development.
Author: Brian K. Hall
Publisher: Gulf Professional Publishing
ISBN: 9780127309354
Category : Nature
Languages : en
Pages : 466
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Book Description
A classic problem in evolutionary biology is the origin of larvae - how and why did they occur? Indeed, it has often been suggested that many entirely unique body plans first originated as retained larvae of ancestral organisms. But what of the larvae themselves? What developmental and evolutionary forces shape and constrain them? These questions and others are dealt with by this international team of leading zoologists and developmental biologists. Intended to contribute to a continuing dialectic, this book presents diverse opinions as well as manifold conclusions. Certain to challenge and intrique, The Origin and Evolution of Larval Forms should be a part of the library of every evolutionary and developmental biologist interested in larvae and their significance.
Author: Woods Hole Oceanographic Institution
Publisher:
ISBN:
Category : Ocean
Languages : en
Pages : 1626
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Book Description
Contains also Annual report.
Author: University of Puerto Rico (1903-1966). Institute of Marine Biology
Publisher:
ISBN:
Category : Marine biology
Languages : en
Pages : 616
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Book Description
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