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Souza CBD, Santos GBD, Bedin C, Bergamin M, Mello FD, Villela MM. Triatoma rubrovaria (Hemiptera, Reduviidae, Triatominae) in the Pampa biome, Brazil: a retrospective study of its occurrence and abundance. Rev Inst Med Trop Sao Paulo 2023; 65:e38. [PMID: 37283413 DOI: 10.1590/s1678-9946202365038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 05/02/2023] [Indexed: 06/08/2023] Open
Abstract
Triatoma rubrovaria has been captured in some areas of Rio Grande do Sul State (RS), Brazil, as this species can be found in the Pampa biome. Its distribution across this biome should be described in detail to verify the potential of this vector to transmit Trypanosoma cruzi. This study aimed to investigate the occurrence of T. rubrovaria in the Pampa biome and transitional areas of RS. The collected information resulted from the analysis of secondary data provided by the Centro Estadual de Vigilancia em Saude (CEVS - State's Center of Health Surveillance). The following aspects were taken into consideration: the year in which the insect was captured, the city, the number of specimens captured, invasion or domiciliation, the notification in the household, surroundings or both, and T. cruzi infection. The data comprised the period from 2009 to 2020, in 109 cities located in the Pampa biome and 98 located in transitional areas. The Pampa biome exhibited 85% of the occurrences of T. rubrovaria, while 1.2% of specimens were T. cruzi-like positive. Both the first and second biennia concentrated 64.6% of captures. Alegrete city, Cangucu city and Piratini city were the locations in the Pampa where the largest numbers of specimens were found. Regarding the transitional areas, Roque Gonzales city, Santiago city and Santana da Boa Vista city exhibited the largest numbers. Most insects were adults, which were found in households. Even though positivity for T. cruzi-like was low, the species still has epidemiological importance in the region.
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Affiliation(s)
- Cassiane Borges de Souza
- Universidade Federal de Pelotas, Programa de Pós-Graduação em Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil
| | - Gabriel Borges Dos Santos
- Universidade Federal de Pelotas, Programa de Pós-Graduação em Recursos Hídricos, Pelotas, Rio Grande do Sul, Brazil
| | - Cleonara Bedin
- Secretaria Estadual da Saúde do Rio Grande do Sul, Centro Estadual de Vigilância em Saúde, Porto Alegre, Rio Grande do Sul, Brazil
| | - Marcelo Bergamin
- Secretaria Estadual da Saúde do Rio Grande do Sul, Centro Estadual de Vigilância em Saúde, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda de Mello
- Secretaria Estadual da Saúde do Rio Grande do Sul, Centro Estadual de Vigilância em Saúde, Porto Alegre, Rio Grande do Sul, Brazil
| | - Marcos Marreiro Villela
- Universidade Federal de Pelotas, Programa de Pós-Graduação em Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil
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Cardozo de Almeida MAR, Freitas SPC, de Oliveira MLR, de Lima NRC, Ferreira Rangel E, Reis Santos-Mallet J. Characterization of the Buccula, Rostrum, Stridulatory Sulcus, Scutellum, and External Female Genitalia of Triatoma carcavalloi (Jurberg, Rocha & Lent, 1998), Triatoma circummaculata (Stål, 1859), and Triatoma rubrovaria (Blanchard, 1843) (Hemiptera, Reduviidae, Triatominae). J Parasitol Res 2019; 2019:3517098. [PMID: 31428466 PMCID: PMC6681587 DOI: 10.1155/2019/3517098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 07/01/2019] [Indexed: 11/18/2022] Open
Abstract
In Brazil, Triatoma rubrovaria (Blanchard, 1843) is the most important species in epidemiological terms in the State of Rio Grande do Sul, due to its wide geographical distribution in this state, followed by T. carcavalloi (Jurberg, Rocha & Lent, 1998) and T. circummaculata (Stål, 1859). Structural analysis of the ventral region of the head (rostrum and buccula), thorax (stridulatorium sulcus and scutellum), and external female genitalia of adults of T. rubrovaria, T. carcavalloi, and T. circummaculata is described here. Scutellum, head, rostrum, and part of the thorax (prosternum) containing the stridulatory sulcus, in both male and female, and the sixth abdominal segment of the female, containing the external genitalia, were processed for scanning electron microscopy studies as routine. Morphological differences in the analyzed structures for all the three Triatoma species studied were detected under scanning electron microscopy. This study confirms the grouping of the T. rubrovaria, T. carcavalloi, and T. circummaculata in 'T. rubrovaria subcomplex' by their morphological similarities.
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Affiliation(s)
- Margareth Alves Ribeiro Cardozo de Almeida
- Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Pavilhão Carlos Chagas, 5° Andar, Rio de Janeiro, RJ 21040-360, Brazil
- Bolsista Treinamento e Capacitação Técnica, FAPERJ, Av Erasmo Braga 118, Rio de Janeiro, RJ 20020-000, Brazil
- Laboratório de Biodiversidade Entomológica, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365. Pavilhão Mourisco, Sala 214, Rio de Janeiro, RJ 21040-360, Brazil
| | - Simone Patrícia Carneiro Freitas
- Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Pavilhão Carlos Chagas, 5° Andar, Rio de Janeiro, RJ 21040-360, Brazil
| | - Maria Luiza Ribeiro de Oliveira
- Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Pavilhão Carlos Chagas, 5° Andar, Rio de Janeiro, RJ 21040-360, Brazil
| | - Nathanielly Rocha Casado de Lima
- Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Pavilhão Carlos Chagas, 5° Andar, Rio de Janeiro, RJ 21040-360, Brazil
| | - Elizabeth Ferreira Rangel
- Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Pavilhão Carlos Chagas, 5° Andar, Rio de Janeiro, RJ 21040-360, Brazil
| | - Jacenir Reis Santos-Mallet
- Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Pavilhão Carlos Chagas, 5° Andar, Rio de Janeiro, RJ 21040-360, Brazil
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Cardozo-de-Almeida M, Neves SCT, Almeida CED, Lima NRCD, Oliveira MLRD, Santos-Mallet JRD, Gonçalves TCM. Biology of Triatoma carcavalloi Jurberg, Rocha & Lent, 1998 under laboratory conditions. Rev Soc Bras Med Trop 2014; 47:307-12. [DOI: 10.1590/0037-8682-0050-2014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Indexed: 11/22/2022] Open
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