Reproductive Strategy of Marine Bivalves and Echinoderms PDF Download

Author: V. L. Kasyanov
Publisher:
ISBN:
Category : Bivalves
Languages : en
Pages : 248

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Book Description
One of the main objectives of this work is to analyze the data on reproduction and growth that might be useful in practical aquaculture and the industry. Hence, the scope of investigations on echinoderms has been confined to economically important species - sea cucumbers, sea urchins and sea stars. Members of the first two classes, such as bivalves, represent objects of aquaculture and industry, while sea stars damage them by attacking molluscs. This wide-ranging material has been presented within a conceptual framework of types of reproductive strategy, classified as: planktotrophic larval, lecithotrophic larval and lecithotrophic embryonic. The book provides a detailed description of planktotrphic larval reproductive strategy and describes its consequences on the ecology, population and other specific features.

Author: Alexander V. Ereskovsky
Publisher: Springer Science & Business Media
ISBN: 9048185769
Category : Sponges
Languages : en
Pages : 382

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Book Description
One of the major questions in the evolution of animals is the transition from unicellular to multicellular organization, which resulted in the emergence of Metazoa through a hypothetical Urmetazoa. The Comparative Embryology of Sponges contains abundant original and literary data on comparative embryology and morphology of the Porifera (Sponges), a group of 'lower Metazoa'. On the basis of this material, original typization of the development of Sponges is given and the problems concerning origin and evolution of Porifera and their ontogenesis are discussed. A morphogenetic interpretation of the body plan development during embryogenesis, metamorphosis and asexual reproduction in Sponges is proposed. Special attention is given to the analysis of characteristic features of the ontogenesis in Porifera. The book pursues three primary goals: 1) generalization of all existing information on individual development of sponges, its classification and a statement according to taxonomical structure of Porifera; 2) revealing of heterogeneity of morphogenesis and peculiarities of ontogeneses in various clades of Porifera, and also their correlations with the organization, both adult sponges, and their larvae; 3) revealing homology of morphogeneses in both Porifera and Eumetazoa, testifying to the general evolutionary roots of multicellular animals, and peculiar features of sponges' morphogeneses and ontogenesis. This book will be of interest to embryologists, zoologists, morphologists and researchers in evolutionary biology.

Author: V. L. Kasʹi︠a︡nov
Publisher: Science Publishers
ISBN:
Category : Bestemmelsesværk
Languages : en
Pages : 308

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Book Description
This text describes larvae of bivalves and echinoderms living in the Sea of Japan, which are or may be economically important, and where adult forms are dominant in benthic communities. Descriptions of 18 species of bivalves and 10 species of echinoderms are given and keys provided for the identification of planktotrophic larvae of bivalves and echinoderms to the family level. Information on identified species is preceded by a description of teh morphology, physiology and behaviour of larvae of the given classes.

Author: Craig M. Young
Publisher: Columbia University Press
ISBN: 0231080042
Category : Benthic animals
Languages : en
Pages : 354

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Book Description
The fifteen chapters which comprise this study explore the most fundamental biological processes in the largest and least understood habitat on earth- the deep sea.

Author: Eugene V. Coan
Publisher: Paul Valentich-Scott
ISBN: 0936494301
Category : Science
Languages : en
Pages : 774

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Book Description
The culmination of a ten-year study, Bivalve Seashells of Western North America treats all bivalve mollusks living from northern Baja California, Mexico to Arctic Alaska. A total of 472 species are described and illustrated with detailed photographs and drawings. All habitats in the region are included from the intertidal splash zone to the abyssal depths of the ocean basins. The book has over 4,800 complete bibliographic references to the bivalves, including citations on the biology, physiology, ecology, and taxonomy of this commercially and biologically important group. Character tables and dichotomous keys assist the reader in identification. Also included in the 764 page book is an illustrated key to the superfamiles of the region, and a complete glossary.

Author: Andrew (Andrey N.) Ostrovsky
Publisher: Springer Science & Business Media
ISBN: 9400771460
Category : Science
Languages : en
Pages : 356

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Book Description
Three major aspects that distinguish this book are that (1) it contains the most detailed analysis of the sexual reproduction (oogenesis, fertilization and embryonic incubation) in a particular phylum of the aquatic invertebrates (Bryozoa) ever made; this analysis is based on an exhaustive review of the literature on that topic published over the last 260 years, as well as extensive original histological, anatomical and morphological data obtained during studies of both extant and extinct species; (2) this broad analysis has made it possible to reconstruct the major patterns, stages and trends in the evolution of sexual reproduction in various bryozoan clades, showing numerous examples of parallelisms during transitions from broadcasting to embryonic incubation, from planktotrophic to non-feeding larvae and from lecithotrophy to placentation; corresponding shifts in oogenesis, fertilization and embryonic development are discussed in detail; and (3) the key evolutionary novelties acquired by Bryozoa are compared with similar innovations that have evolved in other groups of marine invertebrates, showing the general trends in the evolution of their sexual reproduction. Ecological background of these innovations is considered too. Altogether these aspects make the monograph an “Encyclopedia of bryozoan sexual reproduction,” offering an integral picture of the evolution of this complex phenomenon.

Author: Alexander I. Railkin
Publisher: CRC Press
ISBN: 0203503236
Category : Nature
Languages : en
Pages : 317

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Book Description
Recent instances of bioinvasion, such as the emergence of the zebra mussel in the American Great Lakes, generated a demand among marine biologists and ecologists for groundbreaking new references that detail how organisms colonize hard substrates, and how to prevent damaging biomass concentrations. Marine Biofouling: Colonization Processes a

Author: John M. Lawrence
Publisher: CRC Press
ISBN: 9789061912286
Category : Science
Languages : en
Pages : 588

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Book Description
This volume contains abstracts of all papers presented at the International Echinoderms Conferences, and complete papers of those which were submitted for publication and accepted upon recommendation of referees.

Author: Arthur Giese
Publisher: Elsevier
ISBN: 0323152708
Category : Science
Languages : en
Pages : 388

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Book Description
Reproduction of Marine Invertebrates Volume V, Molluscs: Pelecypods and Lesser Classes presents valuable insights on the early evolution of molluscan reproductive biology. It discusses the asexual reproduction, sexual reproduction capacity, and developmental stages of pelecypods and the remaining smaller classes, including aplacophora, polyplacophora, and monoplacophora. One chapter in this volume provides a broad overview of the knowledge and problems on oyster reproductive biology. This book is ideal for marine biologists and researchers, reproductive biologists, and developmental biologists.

Author: Arthur Giese
Publisher: Elsevier
ISBN: 0323153054
Category : Science
Languages : en
Pages : 382

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Book Description
Reproduction of Marine Invetebrates, Volume IV Molluscs: Gastropods and Cephalopods describes the wide range of structural complexity and diverse modes of reproduction of gastropods and cephalopods. Each chapter discusses the asexual reproduction, sexual reproduction capacity, and developmental stages of different group of gastropods and cephalopods, including prosobranchia, opisthobranchia, pulmonata, nautiloidea, decapoda, and octopoda. Gastropods are among the most conspicuous sea animals, and species of limpets, snails, and slugs are found in all marine habitats. Cephalopods are active and important marine predators, ranging from archaic nautiloids to more recent pelagic decapods and benthic octopods, which are often considered to be one of the apexes of invertebrate evolution. They are all gonochoric and reproduce only by sexual means. All have intricate courtship behavior and derived developmental patterns. Marine biologists and researchers, scientists, and developmental biologists will find this book invaluable.