Triatominae

Diploid chromosome set of kissing bug Triatoma baratai (Hemiptera, Triatominae)

K. C. C. Alevi, Reis, Y. V., Borgueti, A. O., Mendonça, V. J., Rosa, J. A., and Azeredo-Oliveira, M. T. V., Diploid chromosome set of kissing bug Triatoma baratai (Hemiptera, Triatominae), vol. 14, pp. 1106-1110, 2015.

Triatomines are insects that are taxonomically included in the Hemiptera order and Triatominae subfamily. Based on phenotypic similarity, capacity hybridization, and genetic and ecological aspects, the triatomine species can be grouped into specific complexes and subcomplexes. However, these groupings have not been confirmed. Cytogenetic analyses are important cytotaxonomic tools for improving the taxonomic knowledge of triatomines.

Distribution of constitutive heterochromatin in Triatoma melanocephala (Hemiptera, Triatominae)

K. C. C. Alevi, Rosa, J. A., and Azeredo-Oliveira, M. T. V., Distribution of constitutive heterochromatin in Triatoma melanocephala (Hemiptera, Triatominae), vol. 13, pp. 7899-7903, 2014.

In principle, Triatoma melanocephala was included in the Brasiliensis subcomplex on the basis of morphological parameters and geographical layout, since there were no other relevant data available in the literature. On the basis of karyotype, it has been proposed to exclude T. melanocephala, as well as of T. vitticeps and T. tibiamaculata, from the subcomplex, which shows fragmentation of the X sex chromosomes, thereby approaching the species of North America.

Distribution of constitutive heterochromatin in species of triatomines with fragmentation of sex chromosomes X

A. L. Guerra, Alevi, K. C. C., Rosa, J. A., and Azeredo-Oliveira, M. T. V., Distribution of constitutive heterochromatin in species of triatomines with fragmentation of sex chromosomes X, vol. 13, pp. 10279-10284, 2014.

Cytogenetic analyses of triatomines are considered to be important taxonomic tools. Thus, we analyzed the pattern of constitutive heterochromatin in 7 species of triatomine with fragmentation of the sex chromosome X, focusing on the cytotaxonomy of these triatomines. The species analyzed included Triatoma vitticeps, Triatoma melanocephala, Triatoma tibiamaculata, Triatoma protracta, Meccus pallidipennis, Panstrongylus megistus, and Panstrongylus lignarius.

Localization of rDNA sites in holocentric chromosomes of three species of triatomines (Heteroptera, Triatominae)

G. Dias de Ca Severi-Aguiar and de Azeredo-Oliveira, M. Tercília, Localization of rDNA sites in holocentric chromosomes of three species of triatomines (Heteroptera, Triatominae), vol. 4, pp. 704-709, 2005.

Chromatin organization in the holocentric chromosomes of three triatomines species was cytologically studied by fluorescent in situ hybridization with a 45S rDNA probe of Drosophila melanogaster to localize ribosomal genes. In Triatoma tibiamaculata, metaphases I showed telomeric highlights in a single, larger bivalent. In T. protacta, hybridization was detected in one of the telomeres of an autosomal chromosome. In T. platensis, there were highlights in a single, smaller chromosome (X chromosome).

Acid phosphatase activity distribution in salivary glands of triatomines (Heteroptera, Reduviidae, Triatominae)

A. C. B. Anhê, Lima-Oliveira, A. P. M., and Azeredo-Oliveira, M. T. V., Acid phosphatase activity distribution in salivary glands of triatomines (Heteroptera, Reduviidae, Triatominae), vol. 6, pp. 197-205, 2007.

Acid phosphatase activity (Gömori technique) in salivary gland cells was investigated in adult insects (males and females) of four species of triatomines: Triatoma infestans, Panstrongylus megistus, Rhodnius neglectus, and Rhodnius prolixus. Binucleated cells with bulky and polyploidy nuclei were detected, with acid phosphatase activity in the heterochromatin and nucleolus, which showed the most intense response.

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