Sökning: "peel"

Visar resultat 1 - 5 av 54 avhandlingar innehållade ordet peel.

  1. 1. Functional Morphology of Gastropods and Bivalves

    Författare :Jenny Sälgeback; Lars Holmer; John S. Peel; Jan-Ove Ebbestad; Enrico Savazzi; Anders Warén; Uppsala universitet; []
    Nyckelord :Earth sciences; Gastropoda; Bivalvia; functional morphology; constructional morphology; Geovetenskap;

    Sammanfattning : Functional morphology analyzes the relationships between form and function in organisms. However, a comprehensive analysis of any organic structure requires an integrated approach to morphology. For this purpose constructional morphology was developed, where function, phylogeny and construction together explain form. LÄS MER

  3. 2. Ordovician (Billingen and Volkhov stages) Brachiopod Faunas of the East Baltic

    Författare :Eva Egerquist; Lars Holmer; John S. Peel; Michael G. Bassett; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Early Middle Ordovician; Billingen Regional Stage; Volkhov Regional Stage; Diversity; Brachiopoda; Conodonta; Ostracoda; Estonia; Russia; Geovetenskap; Earth sciences; Geovetenskap;

    Sammanfattning : Lower-Middle Ordovician (Arenig) successions in the East Baltic have been investigated for more than one hundred and fifty years. Nevertheless detailed sampling still yields new species and better knowledge of the environment in which these organisms lived. LÄS MER

  4. 3. Evolution and Development of the Onychophoran Head and Nervous System

    Författare :Joakim Eriksson; Graham Budd; John Peel; Gerhard Scholtz; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Onychophora; Development; Nervous System; Immunohistochemistry; Gene Expression; Biologi; Biology; Biologi; zoologisk utvecklingsbiologi; Animal Development;

    Sammanfattning : Onychophorans are closely allied to the arthropods and possess a body organisation more similar to Middle Cambrian fossils than to recent arthropods. This means that onychophorans in some respects can be regarded as a model for the last common ancestor to both the Arthropoda and the Onychophora. LÄS MER

  5. 4. Investigation of Hox gene expression and Wnt-signalling in basally branching ecdysozoans

    Författare :Mattias Hogvall; Ralf Janssen; Graham Budd; Andreas Hejnol; Andrew Peel; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wnt signalling pathway; Hox genes; Fz receptors; Onychophora; Priapulida; Ecdysozoa; Biology with specialization in Evolutionary Organismal Biology; Biologi med inriktning mot evolutionär organismbiologi;

    Sammanfattning : One of the most important processes in the development of an animal is the determination and patterning of the primary body axis, the anterior-posterior (AP) axis. After the AP axis has been established the embryo grows and elongates through posterior elongation. LÄS MER

  7. 5. The Arthropod Assemblage of the Upper Devonian Strud locality and its Ecology

    Författare :Linda Lagebro; Graham E. Budd; Gregory D. Edgecombe; John S. Peel; Gerhard Scholtz; Uppsala universitet; []
    Nyckelord :Branchiopoda; Hexapoda; Eurypterida; Strud; Famennian; ephemeral pool; Earth Science with specialization in Historical Geology and Palaeontology; Geovetenskap med inriktning mot historisk geologi och paleontologi;

    Sammanfattning : The Devonian (419-359 million years ago) is the geological period when the terrestrial biota fully established. Early representatives from a terrestrial and continental aquatic biota have previously been reported from the Upper Devonian (Famennian) Strud quarry in Belgium, in the shape of seed-bearing plants and vertebrates (fish and early tetrapods). LÄS MER