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microbiota in the crop of the flying foregut fermenter theropod Opisthocomus

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  • stephanpickering@cs.com
    Filipa Godoy-Vitorino, Ruth E. Ley, Zhan Gao, Zhigeng Pei, Humberto Ortiz-Zuazaga, L.R. Pericchi, Maria A. Garcia-Amado, Fabian Michaelangeli, M.J. Blaser,
    Message 1 of 1 , Oct 31, 2008
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      Filipa Godoy-Vitorino, Ruth E. Ley, Zhan Gao, Zhigeng Pei, Humberto Ortiz-Zuazaga, L.R. Pericchi, Maria A. Garcia-Amado, Fabian Michaelangeli, M.J. Blaser, J.I. Gordon, Maria G. Dominguez-Bello, 2008. Bacterial community in the crop of the hoatzin, a Neotropical folivorous tropical bird. Applied & Environmental Microbiology 74(19):5905-5912 + Supplemental Material [Supplemental Files 1-2]. ABSTRACT. The hoatzin is unique among known avian species because of the fermentative function of its enlarged crop. A small-bodied flying foregut fermenter is a paradox, and this bird provides an interesting model to examine how diet selection and the gut microbiota contribute to maximizing digestive efficiency. Therefore, we characterized the bacterial population in the crop of six adult hoatzins captured from the wild. A total of 1,235 16S rRNA gene sequences were grouped into 580 phylotypes (67% of the pooled species richness sampled, based on Good's coverage estimator, with CACE and Chao1 estimates of 1,709 and 1,795 species-level [99% identity] operational taxonomic units, respectively). Members of 9 of the 75 known phyla in Bacteria were identified in this gut habitat; the Firmicutes were dominant (67% of sequences, belonging to the classes Clostridia, Mollicutes, and Bacilli), followed by the Bacteroidetes (30%, mostly in the order Bacteroidales), Proteobacteria (1.8%), and Lentisphaerae, Verrucomicrobia, TM7, Spirochaetes, Actinobacteria, and Aminanaerobia (all <0.1%). The novelty in this ecosystem is great; 94% of the phylotypes were unclassified at the "species" level, and thus likely include novel cellulolytic lineages.
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      cf. L.P. Kourzon, Christian Erard, Jean-Pierre Gasc, F.J. Dzerzhinsky, 2003. Les adaptations de l'hoazin (Opisthocomus hoazin) a la folivorie. Caracterisques morphologiques et particularites fonctionelles des appareils du bec et hyoidien. Comptes Rendus Biologies [Paris] 326(1):75-94

      Panaves Gauthier & de Queiroz 2001
      Dinosauria Owen 1842
      Theropoda Marsh 1881
      Avifilopluma Gauthier & de Queiroz 2001
      Maniraptora Gauthier 1984
      Avialae Gauthier 1984
      Aves Linnaeus 1758 (Converted Clade Name)

      Opisthocomidae Swainson 1837

      Opisthocomus Illiger 1811
      = Orthocorys Vieillot 1816 nomen nudum
      = Sasa Vieillot 1819 nomen rejectum
      = Ophisthocomus [sic] J. Fleming 1822
      = Opisthocamus [sic] J. Brookes 1830

      Opisthocomus hoazin (Statius Mueller 1776)
      = Crax fuscus mexicanus Brisson 1760
      = L'Hoazin Buffon 1771
      = Phasianus hoazin P.L. Statius Mueller 1776
      = Phasianus cristatus J.F. Gmelin 1788 nomen rejectum
      = Opisthocomus 'Hoffmannsegg' Phasianus cristatus 'LinGmel' Illiger 1811
      = Orthocorys ' "Hoazin" Buffon' Vieillot 1816 nomen nudum
      = Opisthocomus hoatzin [sic] (Statius Mueller 1776) Stephens 1819
      = Sasa 'Sonnini' cristatus (J.F. Gmelin 1788) Viellot 1819 nomen rejectum
      = Opisthocomus hoazin (Statius Mueller 1776) Ogilvie-Grant 1893

      STEPHAN PICKERING / Chofetz Chayim ben-Avraham
      The Dinosaur Fractals Project
      2333 Portola Drive # 4
      Santa Cruz, California 95062-4250

      stephanpickering@...

      website: http://groups.yahoo.com/group/paleo_bio_dinosaur_ontology

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