Description of the diploid chromosome set of Triatoma pintodiasi (Hemiptera, Triatominae)

Alevi, Kaio Cesar Chaboli; Moreira, Felipe Ferraz Figueiredo; Jurberg, José; Azeredo-Oliveira, Maria Tercília Vilela de

doi:10.4238/gmr.15026343

Cited by 24 publications

(36 citation statements)

References 36 publications

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“…To date, 150 species in 18 genera have been described (Alevi et al, 2015a). The importance of the triatomines in parasitology is due to these insects being transmitters of the etiologic agent of Chagas disease, Trypanosoma cruzi (Kinetoplastida, Trypanosomatidae) (Tavares and Azeredo-Oliveira, 1996), a flagellate parasite that infects many mammals, including humans (Dias, 2002).…”

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confidence: 99%

Nucleolar-persistence phenomenon during spermatogenesis in genus Meccus (Hemiptera, Triatominae)

Madeira¹,

Lima²,

Rosa

et al. 2016

Genet. Mol. Res.

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ABSTRACT. The Triatominae subfamily consists of 150 species in 18 genera, grouped into six tribes. In cytogenetics, triatomines are important biological models because they have holocentric chromosomes and nucleolar persistence in meiosis. The phenomenon of nucleolar persistence has been described for 23 species of triatomine in three genera: Triatoma, Rhodnius, and Panstrongylus. However, new species and genera should be analyzed to assess whether nucleolar persistence is a peculiarity of Triatominae. Thus, this study aimed to analyze nucleolar behavior during spermatogenesis of Meccus pallidipennis and M. longipennis, focusing on the nucleolar-persistence phenomenon. Through the analysis of spermatogenesis, more specifically of meiotic metaphase, we observed the phenomenon of nucleolar persistence in M. pallidipennis and M. longipennis, represented by remnants of nucleolar material in metaphase. Thus, although nucleologenesis of new species, and, especially, new genera, should be analyzed, this study confirms for the first time the phenomenon of nucleolar persistence in the genus Meccus. Therefore, we emphasize the importance of new studies in this area in order to assess whether this phenomenon is truly a synapomorphy of these hematophagous insects.

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Section: Introductionmentioning

confidence: 99%

Nucleolar-persistence phenomenon during spermatogenesis in genus Meccus (Hemiptera, Triatominae)

Madeira¹,

Lima²,

Rosa

et al. 2016

Genet. Mol. Res.

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“…The Heteroptera subfamily is composed of 150 species, grouped into 18 genera and six tribes (Alevi et al, 2015a), with all species being potential vectors of Chagas disease.…”

Section: Introductionmentioning

confidence: 99%

Spermatogenesis in Nesotriatoma bruneri (Usinger 1944) (Hemiptera, Triatominae)

et al. 2016

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ABSTRACT. The Nesotriatoma genus consists of the species N. flavida N. bruneri and N. obscura, forming the Flavida complex. Variation in the size and morphological differences intraspecific of N. flavida led to the description of N. bruneri. Two years later, the same author proposed the synonymization of N. bruneri with N. flavida. Only in 1981 the specific status N. bruneri was recovered by means of morphological analysis of the genitalia. However, recently by genetic analysis, it was suggested that N. bruneri and N. flavida should be again synonymized. As Chagas disease has no cure, the main way to minimize the incidence of this disease is by vector control. Thus, grouping biological data from these hematophagous insects can assist in the development of vector control programs and mainly assist in taxonomic issues of synonymization. Thus, this paper describes spermatogenesis of N. bruneri. Three adult N. bruneri males were cytogenetically analyzed. The meiotic behavior observed for N. bruneri was very similar to that observed for the triatomine species with 23 chromosomes: during prophase, chromatin compaction was observed, the chromocenter composition was characterized (X 1 , X 2 and Y), and the species karyotype was confirmed as 2n = 23 (20A + X 1 X 2 Y), as it was observed for N. flavida. Moreover, it was possible to observe anaphase and telophase. Thus, this study describes reproductive aspects of N. bruneri in order to contribute to the biological knowledge of these insects of epidemiological importance. Furthermore, this corroborates the synonymization of N. bruneri with N. flavida.

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“…5 Recent studies on meiotic behavior 2 and characterization of nymphs 6 showed significant differences between T. pintodiasi and other species of the T. rubrovaria subcomplex. However, new comparative analyses were encouraged.…”

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“…However, new comparative analyses were encouraged. 2,5 Thus, this study characterized the genetic distance between the mitochondrial 16S rDNA gene of T. pintodiasi and that of the members of the T. rubrovaria subcomplex to evaluate the specific status of T. pintodiasi.…”

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“…All of the species are considered potential vectors of Chagas disease. 2 In Brazil, there are 65 species distributed throughout the country's 27 states, and 64% of them are endemic species. 3 In the state of Rio Grande do Sul, there are 12 species of triatomines: Triatoma rubrovaria, Triatoma platensis, Triatoma pintodiasi, Triatoma oliveirai, Triatoma klugi, Triatoma delpontei, Triatoma carcavalloi, Triatoma circummaculata, and Panstrongylus tupynambai, the latter of which has limited distribution in this Brazilian state.…”

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Mitochondrial Gene Confirms the Specific Status of Triatoma pintodiasi Jurberg, Cunha, and Rocha, 2013 (Hemiptera, Triatominae), an Endemic Species in Brazil

Alevi

Guerra

Imperador

et al. 2017

The American Society of Tropical Medicine and Hygiene

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Abstract. Chagas disease is most frequently transmitted to humans through contact with feces of insects from the Triatominae subfamily. In Brazil, there are 65 species of triatomines distributed throughout the country's 27 states. Among the species in the state of Rio Grande do Sul, Triatoma rubrovaria, Triatoma oliveirai, Triatoma pintodiasi, Triatoma klugi, Triatoma carcavalloi, and Triatoma circummaculata (with the addition Triatoma limai, which is endemic to Argentina) form the T. rubrovaria subcomplex. The last species described and grouped into this subcomplex was T. pintodiasi. Thus, this study characterized the genetic distance between T. pintodiasi and of the other members of the T. rubrovaria subcomplex to evaluate the specific status of T. pintodiasi. The genetic distance observed between T. pintodiasi and the other species of the T. rubrovaria subcomplex was large, a finding which highlights the specific status of the species considered to be cryptic of T. circummaculata.

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Description of the diploid chromosome set of Triatoma pintodiasi (Hemiptera, Triatominae)

Cited by 24 publications

References 36 publications

Nucleolar-persistence phenomenon during spermatogenesis in genus Meccus (Hemiptera, Triatominae)

Nucleolar-persistence phenomenon during spermatogenesis in genus Meccus (Hemiptera, Triatominae)

Spermatogenesis in Nesotriatoma bruneri (Usinger 1944) (Hemiptera, Triatominae)

Mitochondrial Gene Confirms the Specific Status of Triatoma pintodiasi Jurberg, Cunha, and Rocha, 2013 (Hemiptera, Triatominae), an Endemic Species in Brazil

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