Alexander Haas

Summary

Affiliation: University of Hamburg
Country: Germany

Publications

  1. ncbi request reprint Extreme tadpoles: the morphology of the fossorial megophryid larva, Leptobrachella mjobergi
    Alexander Haas
    Biozentrum Grindel und Zoologisches Museum, Martin Luther King Platz 3, Hamburg, Germany
    Zoology (Jena) 109:26-42. 2006
  2. ncbi request reprint Cranial musculature in the larva of the caecilian, Ichthyophis kohtaoensis (Lissamphibia: Gymnophiona)
    Thomas Kleinteich
    Institut fur Spezielle Zoologie und Evolutionsbiologie, Friedrich Schiller Universitat Jena, Erbertstrasse 1, 07743 Jena, Germany
    J Morphol 268:74-88. 2007
  3. pmc Caecilian jaw-closing mechanics: integrating two muscle systems
    Thomas Kleinteich
    Universitat Hamburg, Biozentrum Grindel und Zoologisches Museum, Martin Luther King Platz 3, 20146 Hamburg, Germany
    J R Soc Interface 5:1491-504. 2008
  4. doi request reprint The hyal and ventral branchial muscles in caecilian and salamander larvae: homologies and evolution
    Thomas Kleinteich
    Biozentrum Grindel und Zoologisches Museum, Universitat Hamburg, Hamburg 20146, Germany
    J Morphol 272:598-613. 2011
  5. ncbi request reprint Evolutionary innovation in the vertebrate jaw: A derived morphology in anuran tadpoles and its possible developmental origin
    Mats E Svensson
    Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich Schiller Universitat, Jena, Germany
    Bioessays 27:526-32. 2005
  6. ncbi request reprint Bony-tailed tadpoles: the development of supernumerary caudal vertebrae in larval megophryids (Anura)
    Gregory R Handrigan
    Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, Nova Scotia, Canada B3H 4J1
    Evol Dev 9:190-202. 2007

Detail Information

Publications6

  1. ncbi request reprint Extreme tadpoles: the morphology of the fossorial megophryid larva, Leptobrachella mjobergi
    Alexander Haas
    Biozentrum Grindel und Zoologisches Museum, Martin Luther King Platz 3, Hamburg, Germany
    Zoology (Jena) 109:26-42. 2006
    ..Despite a number of features in cranial and axial morphology of L. mjobergi, which appear to be adaptations to its fossorial mode of life, the species clearly shares other features with its megophryid and pelobatid relatives...
  2. ncbi request reprint Cranial musculature in the larva of the caecilian, Ichthyophis kohtaoensis (Lissamphibia: Gymnophiona)
    Thomas Kleinteich
    Institut fur Spezielle Zoologie und Evolutionsbiologie, Friedrich Schiller Universitat Jena, Erbertstrasse 1, 07743 Jena, Germany
    J Morphol 268:74-88. 2007
    ..However, the m. pterygoideus and the m. levator quadrati are unique to the Gymnophiona...
  3. pmc Caecilian jaw-closing mechanics: integrating two muscle systems
    Thomas Kleinteich
    Universitat Hamburg, Biozentrum Grindel und Zoologisches Museum, Martin Luther King Platz 3, 20146 Hamburg, Germany
    J R Soc Interface 5:1491-504. 2008
    ..In the aquatic T. natans, with its less well-roofed skull, there is a larger contribution of the mm. levatores mandibulae to total bite force than in the terrestrial I. cf. kohtaoensis and S. annulatus...
  4. doi request reprint The hyal and ventral branchial muscles in caecilian and salamander larvae: homologies and evolution
    Thomas Kleinteich
    Biozentrum Grindel und Zoologisches Museum, Universitat Hamburg, Hamburg 20146, Germany
    J Morphol 272:598-613. 2011
    ..The m. branchiohyoideus externus is either apomorphic for the Batrachia (frogs + salamanders) or salamander larvae depending on whether or not a homologous muscle is present in frog tadpoles...
  5. ncbi request reprint Evolutionary innovation in the vertebrate jaw: A derived morphology in anuran tadpoles and its possible developmental origin
    Mats E Svensson
    Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich Schiller Universitat, Jena, Germany
    Bioessays 27:526-32. 2005
    ..We believe that the evolution of larval jaws in anurans may shed light on the general evolutionary mechanisms of how new articulations, not only in the jaw region, could have arisen in the vertebrate skull...
  6. ncbi request reprint Bony-tailed tadpoles: the development of supernumerary caudal vertebrae in larval megophryids (Anura)
    Gregory R Handrigan
    Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, Nova Scotia, Canada B3H 4J1
    Evol Dev 9:190-202. 2007
    ..A likely driving force in the reappearance of the trait in megophryids is the selective pressure associated with a riparian lifestyle...