Origin and Evolution of the Gastropod Family Pomatiopsidae, with Emphasis on the Mekong River Triculinae PDF Download
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Author: George Davis
Publisher: Academy of Natural Sciences
ISBN: 9781422319260
Category : Nature
Languages : en
Pages : 132
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Book Description
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.
Author: George Davis
Publisher: Academy of Natural Sciences
ISBN: 9781422319260
Category : Nature
Languages : en
Pages : 132
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Book Description
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.
Author:
Publisher: Academy of Natural Sciences
ISBN: 9781437955415
Category :
Languages : en
Pages : 302
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Book Description
Author:
Publisher: Academic Press
ISBN: 0123849454
Category : Medical
Languages : en
Pages : 481
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Book Description
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
Author:
Publisher: Academy of Natural Sciences
ISBN: 9781437955330
Category :
Languages : en
Pages : 242
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Book Description
Author: Winston Frank Ponder
Publisher: CRC Press
ISBN: 1351115235
Category : Nature
Languages : en
Pages : 1127
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Book Description
This volume provides individual treatments of the major molluscan taxa. Each chapter provides an overview of the evolution, phylogeny and classification of a group of molluscs, as well as more specific and detailed coverage of their biology (reproduction, feeding and digestion, excretion, respiration etc.), their long fossil record and aspects of their natural history. The book is illustrated with hundreds of colour figures. In both volumes, concepts are summarised in colour-coded illustrations. Key selling features: Comprehensively reviews molluscan biology and evolutionary history Includes a description the anatomy and physiology of anatomical systems Up to date treatment with a comprehensive bibliography Reviews the phylogenetic history of the major molluscan lineages
Author: George M. Davis
Publisher:
ISBN:
Category : Gastropoda
Languages : en
Pages : 0
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Book Description
Author:
Publisher: Academy of Natural Sciences
ISBN: 9781437955446
Category :
Languages : en
Pages : 244
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Book Description
Author: G. M. Barker
Publisher: CABI
ISBN: 0851993184
Category : Science
Languages : en
Pages : 574
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Book Description
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.
Author:
Publisher: Academy of Natural Sciences
ISBN: 9781437955354
Category :
Languages : en
Pages : 240
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Book Description
Author: Matthias Glaubrecht
Publisher: Springer Science & Business Media
ISBN: 3642124259
Category : Science
Languages : en
Pages : 597
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Book Description
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.
