Download or read book Origin and Evolution of the Gastropod Family Pomatiopsidae with Emphasis on the Mekong River Triculinae written by George Davis and published by Academy of Natural Sciences. This book was released on 2007-12 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes an extraordinary endemic radiation of hydrobioid snails in the Mekong River (MR). The monophyletic radiation involving the subfamily Triculinae, 3 tribes, 11 genera, & 92 species, is larger than contemporaneous endemic freshwater gastropod faunas of centers of endemism, such as lakes Tanganyika & Baikal. The study addresses the issue of how higher taxa arise by analyzing the series of adaptive radiations within the MR Triculinae. The worldwide family Hydrobiidae is polyphyletic & includes 2 distinct lineages, the Hydrobiidae sensu stricto & the Pomatiopsidae with the subfamilies Pomatiopsidae & Triculinae. The differences between the two families were masked by convergence in shell, radula, penis, & operculum. Maps & illus.

Download or read book The Origin and Evolution of the Gastropod Family Pomatiopsidae written by George M. Davis and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Origin and Evolution of the Gastropod Family Pomatiopsidae written by Dabney G. Hart and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of The Academy of Natural Sciences Vol 142 1990 written by and published by Academy of Natural Sciences. This book was released on with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Important Helminth Infections in Southeast Asia written by and published by Academic Press. This book was released on 2010-07-09 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thematic volume provides authoritative, up-to-date reviews pertaining to the epidemiology, public health significance and shifts therein, control (current activities, successes, setbacks), persisting challenges (e.g. sanitation, universal coverage of health services, health-related behavior) of the key parasitic diseases in Southeast Asia. The book also discusses the new tools and approaches for enhanced discovery and control of helminthic diseases. Informs and updates on all the latest developments in the field Contributions from leading authorities and industry experts

Download or read book Proceedings of The Academy of Natural Sciences Vol 136 1984 written by and published by Academy of Natural Sciences. This book was released on with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of The Academy of Natural Sciences Vol 145 1994 written by and published by Academy of Natural Sciences. This book was released on with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Biology of Terrestrial Molluscs written by G. M. Barker and published by CABI. This book was released on 2001 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gastropods on land: phylogeny, diversity and adaptive morphology; Body wall: form and function; Sensory organs and the nervous system; Radular structure and function; Structure and function of the digestive system in Stylommatophora; Food and feeding behaviour; Haemolymph: blood cell morphology and function; Structure and functioning of the reproductive system; Regulation of growth and reproduction; Spermatogenesis and oogenesis; Population and conservation genetics; Life history strategies; Behavioural ecology: on doing the right thing, in the right place at the right time; Soil biology and ecotoxicology.

Download or read book Proceedings of The Academy of Natural Sciences Vol 137 No 2 December 1985 written by and published by Academy of Natural Sciences. This book was released on with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evolution in Action written by Matthias Glaubrecht and published by Springer Science & Business Media. This book was released on 2010-07-24 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiations, or Evolution in Action We have just celebrated the “Darwin Year” with the double anniversary of his 200th birthday and 150th year of his masterpiece, “On the Origin of Species by means of Natural Selection”. In this work, Darwin established the factual evidence of biological evolution, that species change over time, and that new organisms arise by the splitting of ancestral forms into two or more descendant species. However, above all, Darwin provided the mechanisms by arguing convincingly that it is by natural selection – as well as by sexual selection (as he later added) – that organisms adapt to their environment. The many discoveries since then have essentially con?rmed and strengthened Darwin’s central theses, with latest evidence, for example, from molecular genetics, revealing the evolutionary relationships of all life forms through one shared history of descent from a common ancestor. We have also come a long way to progressively understand more on how new species actually originate, i. e. on speciation which remained Darwin’s “mystery of m- teries”, as noted in one of his earliest transmutation notebooks. Since speciation is the underlying mechanism for radiations, it is the ultimate causation for the biological diversity of life that surrounds us.

Download or read book Freshwater Mollusks of the World written by Charles Lydeard and published by Johns Hopkins University Press. This book was released on 2019-04-02 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vinarski, Amy R. Wethington, Thomas Wilke

Download or read book Schistosoma written by Barrie G. M. Jamieson and published by CRC Press. This book was released on 2017-01-12 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Apart from malaria, schistosomiasis is the most prevalent parasitic infection in the world. It affects more than 200 million people in 76 tropical and subtropical countries, causing great suffering and resulting in thousands of deaths. Written by world authorities, this book examines many aspects of the biology, pathology, and control of the schistosoma parasite. Ranging in topic from infection in Pharaonic Egypt, through DNA relationships and biological systems, to advances in development of vaccines against the parasite, this book is a comprehensive text written for researchers and medical professionals alike.

Download or read book Proceedings of The Academy of Natural Sciences Vol 151 2001 written by and published by Academy of Natural Sciences. This book was released on with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bryozoan Evolution written by Frank K. McKinney and published by University of Chicago Press. This book was released on 1991-10-15 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors argue that the growth pattern and form of the colony in many bryozoans is an adaptive strategy rather than a stable genetic character. "Bryozoan Evolution is profusely illustrated and has a bibliography of over 400 titles. It will find an appreciative audience of paleontologists, invertebrate zoologists, and ecologists thanks to its innovative and detailed evaluations of the roles of ecology, adaptive and functional morphology, life histories, biomechanics, developmental constraints, and chance on the evolution of the marine taxa of this speciose group."—Russel L. Zimmer, Science "This book is an excellent source of information on the functional morphology and variety of colonial architecture in bryozoans, very well illustrated, and worth reading at least twice."-Robert L. Anstey, Paleobiology "Even as one of the converted, I found the book a stimulating combination of paleobiology and ecology. In many ways it is a 'teaser'-the authors suggest a number of interesting hypotheses, and can test only some of them. Perhaps most important, McKinney and Jackson provide a plethora of fascinating ideas and examples that demonstrate the potential of this group of animals, and that should stimulate more work."-Michael S. Keough, TREE "This stimulating book is sure to promote further interest in bryozoans. It will appeal to biologists and paleontologists alike."-Paul Taylor, Times Higher Education Supplement

Download or read book The status and distribution of freshwater biodiversity in Indo Burma written by and published by IUCN. This book was released on 2012 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River and Stream Ecosystems of the World written by Colbert E. Cushing and published by Univ of California Press. This book was released on 2006-02-06 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ia a synopsis and review of the major rivers of the world.

Download or read book Climate Change and Infectious Fish Diseases written by Patrick T.K. Woo and published by CABI. This book was released on 2020-09-04 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This definitive reference work explores the effects of current and expected climate change, taking place throughout the world, on selected bacterial, viral, fungal and parasitic infectious fish diseases of economically important fish in tropical and temperate waters"--