Does antennal sensilla pattern of different populations of Triatoma maculata (Hemiptera: Reduviidae) reveal phenotypic variability?
| Autor: | Francisco Maciel dos Santos, Ana Laura Carbajal-de-la-Fuente, Nathalia Coelho Vargas, Josiane Nogueira Müller, Rosangela Santos, Catarina Macedo Lopes, Teresa Cristina Monte Gonçalves, Amanda Coutinho de Souza, Alice Helena Ricardo-Silva |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Male
Entomology 030231 tropical medicine Population Short Report Zoology Bristle medicine.disease_cause lcsh:Infectious and parasitic diseases 03 medical and health sciences 0302 clinical medicine Infestation parasitic diseases medicine Animals lcsh:RC109-216 Triatoma 030212 general & internal medicine Sensilla education Triatominae Antenna (biology) Population Density education.field_of_study biology Roraima biology.organism_classification Hemiptera Insect Vectors Infectious Diseases Biological Variation Population Reduviidae Triatominae populations Female Parasitology Antennal phenotype Animal Distribution Brazil |
| Zdroj: | Parasites & Vectors, Vol 12, Iss 1, Pp 1-6 (2019) Parasites & Vectors |
| ISSN: | 1756-3305 |
| Popis: | Background In Brazil, Triatoma maculata is only found in the State of Roraima and is a vector of Trypanosoma cruzi, the etiological agent of Chagas disease. It occurs in wild, peridomestic and domestic habitats, with an urban infestation in Boa Vista, the capital of this Brazilian state. The aim of this study was to assess the morphological variability of the T. maculata antennal phenotype in three populations of Roraima State, using the antennal sensilla pattern analyzed under optical microscopy. Methods The number and distribution of four antennal sensilla types (bristles, thin and thick walled trichoidea, and basiconic) of three Brazilian populations of T. maculata from Roraima State were compared. Univariate and multivariate analyses were performed. Results The antenna of T. maculata presented the four types of sensilla. According to the density and distribution of the antennal sensilla characteristics, the multivariate analyses showed that the laboratory population is morphologically structured. Urban specimens showed a pronounced phenotypic variability. The main differences were observed in the pedicel segment, and between males and females. Conclusions We determined the antennal phenotype in three Roraima populations of T. maculata. These results support the idea that the patterns of antennal sensilla are sensitive markers for distinct populations in the Triatominae. The infestations of T. maculata in different habitats reinforces the ability of this vector to become adapted to a variety of environments, which, could have eco-epidemiological implications for the T. cruzi transmission that are still not well understood. |
| Databáze: | OpenAIRE |
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