Full text in pdf format

Cytotaxonomic analysis of Brazilian species of the genus Amazona (Psittacidae, Aves) and confirmation of the genus Salvatoria (Ribeiro, 1920)

José Maurício Barbanti Duarte; Renato Caparroz

Departamento de Melhoramento Genético Animal, Faculdade de Ciências Agrárias e Veterinárias, UNESP, 14870-000 Jaboticabal, SP, Brasil. Send correspondence to J.M.B.D.

ABSTRACT

The karyotypes of 12 species of Psittacidae of the genus Amazona were studied: A. aestiva, A. amazonica, A. brasiliensis, A. autumnalis, A. farinosa, A. festiva, A. kawalli, A. ochrocephala, A. pretrei, A. rhodocorytha, A. vinacea and A. xanthops. The metaphases were obtained using a short term culture of feather pulp. Eleven of the twelve analyzed species were karyotypically homogeneous, with only a few divergences in chromosomes 2 and 3. The species A. xanthops showed large karyotypic differences compared to the genus Amazona. Consequently, the genus Salvatoria (Ribeiro, Rev. Mus. Paul. 12: 1-82, 1920) was confirmed, and A. xanthops renamed Salvatoria xanthops.
The study showed the chromosomic conservation of the genus Amazona and the need for further taxonomic studies of the karyotype of the Psittacidae.

Keywords: cytotaxonomic; genus Amazona; genus Salvatoria.

REFERENCES

Aquino, R. and Ferrari, I. (1990). Chromosome study of Amazona amazonica and A. aestiva (Aves; Psittaciformes): determination of chromosome number and identification of sex chromosomes by C-banding methods. Genetica 81: 1-3.

Boer, L.E.M. and Belterman, R.H.R. (1981). The somatic chromosomes of three parrots: The Kea (Nestor notabilis), the Yellow-headed Parrot (Amazona ochrocephala) and the Grey Parrot (Psittacus erithacus). Acta Zool. Path. Antuerpiensia 75: 9-18.

Falcone, C. (1991). Sexagem citogenética em Psittacídeos. Jaboticabal, UNESP, Trabalho de Graduação, pp. 73.

Grantsau, R. and Camargo, H.F.A. (1989). Nova espécie brasileira de Amazona (Aves; Psittacidae). Rev. Bras. Biol. 49: 1017-1020.

Jovanovic, V. and Atkins, L. (1969). A tissue culture technique for the study of avian chromosomes. Auk 86: 696-700.

Levan, A., Fredga, IC. and Sandberg, A.A. (1964). Nomenclature for centromeric position on chromosomes. Hereditas 52: 201-220.

Lucca, E.J., Shirley, L.R. and Lanier, C. (1991). Karyotype studies in twenty-two species of parrots (Psittaciformes; Aves). Rev. Brasil. Genet. 14: 73-98.

Ribeiro, A.M. (1920). Revisão dos Psittacideos brasileiros. Rev. Mus. Paul. 12: 1-82.

Sandnes, G.C. (1954). A new technique for the study of avian chromosomes. Science 119: 508-509.

Sasaki, M., Ikeuchi, T. and Makino, S. (1968). A feather pulp culture technique for avian chromosomes of the Peafowl and the Ostrich. Experientia 24: 1292-1293.

Sasaki, M., Takagi, N. and Nishida, C. (1984). Current profiles of avian cytogenetics, with notes on chromosomal diagnosis of sex in birds. Nucleus 27: 63-73.

Schmutz, S.M. and Prus, S.E. (1987). A cytogenetic study of four species of cockatoos and Amazon Parrots. Genetica 74: 69-71.

Shoffner, R.N., Krishan, A., Haiden, G.J., Bammi, R.IC. and Otis, J.S. (1967). Avian chromosome methodology. Poultry Science 46: 333-344.

Sick, H. (1984). Omitologia Brasileira, uma Introdução. Brasilia, Ed. Un. Brasilia, pp. 291-314.

Van Dongen, M.W.M. and Boer, L.E.M. (1984). Chromosome studies of 8 species of the families Cacatuidae and Psittacidae (Aves; Psittaciformes). Genetica 65: 109-117.