Download or read book Proceedings of the National Shellfisheries Association written by National Shellfisheries Association and published by . This book was released on 1966 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transitions Between Sexual Systems written by Janet L. Leonard and published by Springer. This book was released on 2019-05-21 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on explaining the distribution of sexual systems (simultaneous hermaphroditism, sequential hermaphroditism, environmental sex determination,dioecy, androdioecy, etc.) among taxa, which remains a major challenge in evolutionary biology. Although significant advances have been made for angiosperms, there is not yet a theory that predicts the sexual system for the majority of animal taxa, and other taxa of plants also remain poorly understood. The problem, particularly for animals, is that sexual systems can be very conservative, with whole phyla and classes being characterized by a single sexual system; for example essentially the whole phylum Platyhelminthes is simultaneously hermaphroditic, whereas the Insecta (Hexapoda) and the Tetrapoda among the vertebrates, are exclusively dioecious. Sex allocation theory on the other hand, suggests that sexual systems should be highly responsive to evolution, changing with population density, life span, patterns of resource availability, etc. The book provides an overview of the topic and then presents a series of chapters, each dealing with a taxon with substantial lability in sexual system in order to identify the factors associated with changes in sexual system in each case. By doing so, the authors reveal factors that have not been considered in formal theory but seem to have a major impact on transitions between sexual systems. This book appeals to a wide readership in fields from zoology and evolutionary biology to botany.

Download or read book The Ecology of Intertidal Oyster Reefs of the South Atlantic Coast written by Leonard M. Bahr and published by . This book was released on 1981 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution University of Maryland Natural Resources Institute written by University of Maryland. Natural Resources Institute and published by . This book was released on with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Scientific Report written by Florida. Marine Research Laboratory and published by . This book was released on 1971 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Naturalist written by and published by . This book was released on 1868 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Eastern Oyster written by Victor S. Kennedy and published by University of Maryland Sea Grant Publications. This book was released on 1996 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1966 Congress passed the National Sea Grant College Program Act to promote marine research, education, and extension services in institutions along the nation's ocean and Great Lakes coasts. In Maryland a Sea Grant Program -- a partnership among federal and state governments, universities, and industries -- began in 1977, and in 1982 the University of Maryland was named the nation's seventeenth Sea Grant College. The Maryland Sea Grant College focuses its efforts on the Chesapeake Bay, with emphasis on the marine concerns of fisheries, seafood technology, and environmental quality. The first comprehensive review of the biology of the eastern oyster in more than thirty years. The twenty-one chapters synthesize every aspect of oyster biology -- for instance, general anatomy, physiology, the circulatory system, reproduction, genetics, diseases -- and issues related to management and aquaculture.

Download or read book Special Scientific Report written by Marine Research Laboratory, St. Petersburg and published by . This book was released on with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution Virginia Institute of Marine Science written by Virginia Institute of Marine Science and published by . This book was released on 1962 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oebalia written by and published by . This book was released on 1995 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Veliger written by and published by . This book was released on 1982 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maryland s Oysters written by Victor S. Kennedy and published by . This book was released on 1981 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reproductive Strategy of Marine Bivalves and Echinoderms written by V. L. Kasyanov and published by . This book was released on 2001 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Diseases of Aquatic Organisms written by and published by . This book was released on 1988 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Origin and Evolutionary Radiation of the Mollusca written by Malacological Society of London. Centenary Symposium and published by . This book was released on 1996 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mollusca are a large, diverse, and economically important group that ranges from slugs and snails through clams and oysters to octopus, squid, and cuttlefish. They are evolutionarily ancient and better known than most invertebrate groups because of their calcareous skeletons, which has led to their excellent preservation as fossils. This is a state-of-the-art summary of research into Molluscs and their evolution, including recent developments in phylogenetic analysis and molecular techniques. Since the last book on this topic was published in 1985, the vast amount of updated information found here should be on the bookshelf of every zoologist, evolutionary biologist, and taxonomist.

Download or read book Oceanic Citation Journal with Abstracts written by and published by . This book was released on 1969 with total page 1234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Partial Bibliography of Oysters written by Edwin Anthony Joyce and published by . This book was released on 1972 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt: