Download or read book The Subgenus Ortmannicus Decapoda Cambaridae in Texas with Descriptions of New Species written by Daniel P. Johnson (Author of Subgenus Ortmannicus (Decapoda: Cambaridae) in Texas) and published by . This book was released on 2018 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Biological Society of Washington written by Biological Society of Washington and published by . This book was released on 1997 with total page 1068 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quarterly Journal of the Florida Academy of Sciences written by Florida Academy of Sciences and published by . This book was released on 1989 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Revision of the Neotropical Aquatic Beetle Genus Stenhelmoides Coleoptera Elmidae written by Paul J. Spangler and published by . This book was released on 1989 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Florida Scientist written by and published by . This book was released on 1990 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Smithsonian Contributions to Zoology written by Smithsonian Institution and published by . This book was released on 1969 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by Texas Memorial Museum and published by . This book was released on 1982 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Global Overview of the Conservation of Freshwater Decapod Crustaceans written by Tadashi Kawai and published by Springer. This book was released on 2016-10-26 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces updated information on conservation issues, providing an overview of what is needed to advance the global conservation of freshwater decapods such as freshwater crabs, crayfish, and shrimps. Biodiversity loss in general is highest in organisms that depend on intact freshwater habitats, because freshwater ecosystems worldwide are suffering intense threats from multiple sources. Our understanding of the number and location of threatened species of decapods, and of the nature of their extinction threats has improved greatly in recent years, and has enabled the development of species conservation strategies. This volume focuses on saving threatened species from extinction, and emphasizes the importance of the successful implementation of conservation action plans through cooperation between scientists, conservationists, educators, funding agencies, policy makers, and conservation agencies.

Download or read book Freshwater Animal Diversity Assessment written by E.V. Balian and published by Springer Science & Business Media. This book was released on 2008-04-27 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive study of species- and genus-level diversity and chorology of the global freshwater fauna to date. It gives a state of the art assessment of the diversity and distribution of Metazoa in the continental waters of the world.

Download or read book Sexual Biology and Reproduction in Crustaceans written by Thanumalaya Subramoniam and published by Academic Press. This book was released on 2016-09-27 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sexual Biology and Reproduction in Crustaceans covers crustacean reproduction as it deals with the structural morphology of the gamete-producing primary sex organs, such as the testis and ovary, the formation and maturation of gametes, their fusion during fertilization, and embryonic development that lead to the release of larvae. Constituting a diverse assemblage of animals, crustaceans are best known by their common representatives, such as shrimps, lobsters, and crabs, but also include many more less familiar, but biologically important forms. This work covers the variety of ways in which both male and female gametes are produced by evolving different sexual systems in crustaceans, the range of reproductive systems, and the accordingly, and highly diverse, mechanistic modes of sex determination. In addition, the book features such topics as genetic and environmental determinants in sex determination pattern, variability of mechanisms of fertilization among different species, the origin of different mating systems, the associated mating and brooding behaviors, and the adaptive ability to different environmental conditions with discussion on the evolutionary ecology of social and sexual systems in certain species, which have shown eusocial tendencies, similar to social insects. Marine species occupying diversified ecological niches in tropical and temperate zones reproduce under definitive environmental conditions. Therefore, reproductive ecology of different crustaceans inhabiting different ecological niches also constitutes another important aspect of the work, along with yolk utilization and embryogenesis leading to release of different larval forms, which reflect on their aquatic adaptability. - Forms a valuable source of recent references on the current research in crustacean reproductive physiology - Covers various mating and breeding systems, providing illustrative examples for sexual selection, parental care of developing eggs and embryos, and the evolution of other reproductive behaviors - Features contributions written in the form of review articles, enabling readers to not only gain information in the respective subject, but also help them stimulate ideas in their chosen field of research - Includes a glossary created by the author to define technical terms - Demonstrates the ability of crustacean species to serve as useful model systems for other organisms, to investigate issues related to sexual conflict, mate choice, and sperm competition - Discusses techniques in endocrine research to help researchers in aquaculture develop protocols in the control of reproduction

Download or read book Tropical Stream Ecology written by David Dudgeon and published by Elsevier. This book was released on 2011-05-04 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tropical Stream Ecology describes the main features of tropical streams and their ecology. It covers the major physico-chemical features, important processes such as primary production and organic-matter transformation, as well as the main groups of consumers: invertebrates, fishes and other vertebrates. Information on concepts and paradigms developed in north-temperate latitudes and how they do not match the reality of ecosystems further south is expertly addressed. The pressing matter of conservation of tropical streams and their biodiversity is included in almost every chapter, with a final chapter providing a synthesis on conservation issues. For the first time, Tropical Stream Ecology places an important emphasis on viewing research carried out in contributions from international literature. - First synthetic account of the ecology of all types of tropical streams - Covers all of the major tropical regions - Detailed consideration of possible fundamental differences between tropical and temperate stream ecosystems - Threats faced by tropical stream ecosystems and possible conservation actions - Descriptions and synstheses life-histories and breeding patterns of major aquatic consumers (fishes, invertebrates)

Download or read book The Crayfishes of Georgia written by Horton Holcombe Hobbs and published by . This book was released on 1981 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Crawfishes of Western Pennsylvania written by A E 1863-1927 Ortmann and published by Legare Street Press. This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive guide to the crawfishes of western Pennsylvania is an invaluable resource for anyone interested in the natural history of this unique region. With detailed descriptions of each species, as well as information on their habitat, ecology, and behavior, this book is a must-read for amateur and professional naturalists alike. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Field Guide to Freshwater Invertebrates of North America written by James H. Thorp and published by Academic Press. This book was released on 2010-11-15 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Field Guide to Freshwater Invertebrates of North America focuses on freshwater invertebrates that can be identified using at most an inexpensive magnifying glass. This Guide will be useful for experienced nature enthusiasts, students doing aquatic field projects, and anglers looking for the best fish bait, lure, or fly. Color photographs and art, as well as the broad geographic coverage, set this guide apart. - 362 color photographs and detailed descriptions aid in the identification of species - Introductory chapters instruct the reader on how to use the book, different inland water habitats and basic ecological relationships of freshwater invertebrates - Broad taxonomic coverage is more comprehensive than any guide currently available

Download or read book The Ecology and Biology of Nephrops Norvegicus written by and published by Academic Press. This book was released on 2013-05-10 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Marine Biology has been providing in-depth and up-to-date reviews on all aspects of marine biology since 1963 -- over 40 years of outstanding coverage! The series is well known for its excellence of reviews and editing. Now edited by Michael Lesser (University of New Hampshire, USA), with an internationally renowned Editorial Board, the serial publishes in-depth and up-to-date content on a wide range of topics that will appeal to postgraduates and researchers in marine biology, fisheries science, ecology, zoology, and biological oceanography. - Advances in Marine Biology has been providing in-depth and up-to-date reviews on all aspects of marine biology since 1963. The series is well-known for both its excellence of reviews and editing.

Download or read book Historical Geology written by Charles Schuchert and published by . This book was released on 1924 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to the Study of Zoology Illustrated by the Crayfish written by Thomas Henry Huxley and published by . This book was released on 1897 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In writing this book about Crayfishes it has not been my intention to compose a zoological monograph on that group of animals ... I have desired, in fact, to show how the careful study of one of the commonest and most insignificant of animals, leads us, step by step, from every-day knowledge to the widest generalizations and most difficult problems of zoology; and indeed, of biological science in general."--The Preface