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12. Ecology of the Folivorous Hoatzin (Opisthocomus hoazin) on the Venezuelan plains

Author

Dominguez-Bello, M.G., Michelangeli, F., Ruiz, M.C., Garcia, A., and Rodriguez, E.

Subjects
Venezuela -- Natural history, Hoactzin -- Environmental aspects, Folivores -- Environmental aspects, Biological sciences
Abstract

The Hoatzin (Opisthocomus hoazin) is the only avian folivore known to have fermentative digestion in the crop. We compare results on nesting, growth, and feeding in Pinero Ranch, Cojedes State, Venezuela, with results from another location in the Venezuelan plains. The Hoatzin nests in trees abundant in the habitat. Nests containing two eggs were predominant. Growth rate of chicks was linear over the nesting period (5.68 g/day). The diet of the Hoatzin consisted of young leaves and twigs of some of the most abundant trees in its habitat. Although there are no reports on the phytochemistry of dietary plants, families to which these plants belong include plants known to contain secondary compounds. The crop, which functions as a mediator in plant-Hoatzin interactions and as a detoxification chamber, deserves further study. Received 4 November 1992, accepted 13 November 1993.

Published
1994

17. A phylogenetic evaluation of Leandra (Miconieae, Melastomataceae) : a polyphyletic genus where the seeds tell the story, not the petals

Author

Martin, Claire, Little, D. P., Goldenberg, R., and Michelangeli, F.

Abstract

Melastomataceae is a tropical family of 4500-5000 species divided into nine tribes. The largest tribe, Miconieae, is composed of approximately 2200 species in 30 genera and is found exclusively in the Neotropics. Previous phylogenetic analyses of the Miconieae have suggested that many of the genera are derived from a paraphyletic Miconia. However, these analyses only included six species of the large genus Leandra, so its phylogenetic affinities remained unclear. As currently defined Leandra is characterized by acute petals and terminal inflorescences, but some species of Miconia, Clidemia and Ossaea also have these characters. In this study, we present an analysis of nrITS sequence data for a sample of 63 species of Leandra. The genus is clearly resolved as polyphyletic, but some distinct and well-supported clades exist. Some of these partially correspond to sections recognized in the nineteenth century by Cogniaux, or to geographic distribution. The distribution of seed structure characters is better correlated with the phylogeny than traditional characters, such as petal morphology. Seed appendages in Leandra have evolved independently at least four times.

Published
2008

24. Solubilized and cleaved VP7, the outer glycoprotein of rotavirus, induces permeabilization of cell membranes vesicles

Author

Charpilienne, Annie, Abad, M.J., Michelangeli, F., Alvarado, F., Vasseur, M., Cohen, J., Ruiz, M.C., ProdInra, Migration, Unité de recherche Virologie et Immunologie Moléculaires (VIM (UR 0892)), and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, PROTEINE CAPSIDIALE, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1997

25. Productive penetration of rotavirus in cultured cells induces coentry of the translation inhibitor alpha-sarcin

Author

Liprandi, F., Moros, Z., Gerder, M., Ludert, J.E., Pujol, F.H., Ruiz, M.C., Michelangeli, F., Charpilienne, Annie, Cohen, J., Unité de recherche Virologie et Immunologie Moléculaires (VIM (UR 0892)), Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1997

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