H.V. Souza, M.M.U. Castanhole, H.E.M.C. Bicudo, M.M. Itoyama
Published: February 26, 2008
Genet. Mol. Res. 7 (1) : 196-206
DOI: https://doi.org/10.4238/vol7-1gmr398

Cite this Article:
H.V. Souza, M.M.U. Castanhole, H.E.M.C. Bicudo, M.M. Itoyama (2008). Pattern of silver nitrate-staining during meiosis and spermiogenesis in testicular lobes of Antiteuchus tripterus (Heteroptera: Pentatomidae). Genet. Mol. Res. 7(1): 196-206. https://doi.org/10.4238/vol7-1gmr398

About the Authors
H.V. Souza, M.M.U. Castanhole, H.E.M.C. Bicudo, M.M. Itoyama

Corresponding author
M.M. Itoyama
E-mail: mary@ibilce.unesp.br

ABSTRACT

The pattern of silver nitrate (Ag)-staining differed among testicular lobes of Antiteuchus tripterus. In general, these differences are in regard to the number, size, shape, coloring intensity, and location of the stained bodies or masses, observed during meiosis and spermiogenesis. These characteristics were similar in lobes 1-3. Lobes 4-6, however, differed from each other and from lobes 1-3 as well. Because the Ag-staining method is specific for nucleolar organizing regions and nucleolar material, the observations in meiosis of lobes 1-3 suggested the presence of a single pair of nucleolar organizing region-bearing chromosomes in A. tripterus, as previously found in other Pentatomidae species. In general, the amount of Ag-stained material seen in meiosis of the testicular lobes 1-3 of A. tripterus is smaller than in the other lobes. The differences among

Key words: Heteroptera, Nucleolus, Pentatomidae, Antiteuchu, stesticular lobe differentiation.