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Ron Bout, Herman Berkhoudt, Angélique van der Leeuw, Karin Kurk and Peter Snelderwaard

Animal Biology , Vol. 53, No. 3, pp. 259-301 (2003) Ó Koninklijke Brill NV, Leiden, 2003. Also available online - www.brill.nl Con icting demands on the trophic system of Anseriformes and their evolutionary implications ANGÉLIQUE H.J. VAN DER LEEUW, KARIN KURK, PETER C. SNELDERWAARD, RON G

von Vaupel Klein

al., “Conflicting demands on the trophic system of Anseriformes and their evolutionary implications”; and M. K. Richardson & F. J. Verbeek, “New directions in comparative embryology and the nature of developmental characters”. A most interesting issue, both in the sense of animal morphology and in

Sander W.S. Gussekloo and Gart A. Zweers

condition as found, among others, in Anseriformes (HUXLEY, 1867; DE BEER, 1937). The desmognathous condition is never found in combination with rhynchokinesis outside the Paleognathae. He considers the special morphology of the paleognathous 31 PPC as a condition that makes the combination between a

Christoph Randler

Wildfowl species (Anseriformes; subfamily Anatinae; Aves) differ in some behavioural as- pects from other avian orders. They show relatively high rates of (i) forced extrapair cop- ulations (FEPC), (ii) interspecific brood amalgamation (IRBA) or nest parasitism, and (iii) hybridisation. Some authors

Bradley C. Livezey and Richard L. Zusi

character complex of critical phylogenetic importance for two avian orders - Galliformes and Anseriformes - was detailed in a separate work (ZUSI & LIVEZEY, 2000); newly interpreted, a complex of features of the postorbital region of the skull bolsters a growing body of evidence in support of these two

Carlos Rauque and Patricio De los Ríos Escalante

parasites in South America infect malacostracan crustaceans as larvae. These malacostracans are prey for native and introduced fishes and aquatic birds, mainly Anseriformes (Canevari et al., 1991 ; Rauque et al., 2003 ; Macchi et al., 2007 ). If we considerate the marked endemism and the extinction

Gart A. Zweers, Angtlique H.J. Van Der Leeuw and Ron G. Bout

aquatic feeding. KEY WORDS: neck, morphology, kinematics, Aves, Galliformes, Anseriformes, Ratitae. INTRODUCTION The avian neck is both anatomically and functionally a highly complex system. The structure is kinematically redundant: very different move- ment patterns (combinations of rotations of

Wagner

al., “Conflicting demands on the trophic system of Anseriformes and their evolutionary implications”; and M. K. Richardson & F. J. Verbeek, “New directions in comparative embryology and the nature of developmental characters”. A most interesting issue, both in the sense of animal morphology and in

G.A. Zweers and J.C. Vanden Berge

ancestor system of the wader-waterfowl complex; and that a Presbyornithimorph trophic system does not connect the two major taxa under consideration, but rather represents an early Anatinimorph offshoot. KEY WORDS: morphospace, probing, filter feeding, waders, waterfowl, trophic transitions, Anseriformes

Ulrich Meinert and Hans-Heiner Bergmann

. Die trillernden Rufformen werden erst spater ausgebildet. Ziehen wir nun uber die Huhnervogel hinaus die ebenfalls nestfluch- tenden Kuken der Entenv6gel (Anseriformes) hinzu. Schon vor dem Schlupfen treten weitgehende Ahnlichkeiten im Repertoire von Haus- huhn und Enten auf (GOTTLIEB & VANDENBERGH