Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay
Despite sustained efforts for eliminating Triatoma infestans, reinfestation still persists in large part of the endemic area of Chagas disease from the Gran Chaco region. Sylvatic T. infestans populations seem to threat success of control programs of domestic T. infestans. In this study, we analyzew...
Guardado en:
| Publicado: |
2017
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v97_n2_p481_DeArias http://hdl.handle.net/20.500.12110/paper_00029637_v97_n2_p481_DeArias |
| Aporte de: |
| id |
paper:paper_00029637_v97_n2_p481_DeArias |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_00029637_v97_n2_p481_DeArias2023-06-08T14:23:22Z Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay Article domestic species female introduced species morphometry nonhuman Paraguay pesticide spraying survivor Triatoma infestans wing anatomy and histology animal comparative study domestic animal insect vector Triatoma wild animal wing Animals Animals, Domestic Animals, Wild Female Insect Vectors Paraguay Triatoma Wings, Animal Despite sustained efforts for eliminating Triatoma infestans, reinfestation still persists in large part of the endemic area of Chagas disease from the Gran Chaco region. Sylvatic T. infestans populations seem to threat success of control programs of domestic T. infestans. In this study, we analyzewhether T. infestans collected after a community-wide spraying were survivors or were immigrants from elsewhere using geometric morphometric tools. We used 101 right wings of female T. infestans captured before and after intervention program carried out in 12 de Junio and Casuarina, villages from Paraguayan Chaco, and in Puerto Casado during presprayed collection. There were no significant differences in wing size of domestic T. infestans between pre- and postspraying populations, and between domestic and sylvatic ones.When shape variables originating from postintervention individuals from 12 de Juniowere introduced one by one into a discriminant analysis, the greatest weight (53%)was allocated to the sylvatic group. Furthermore, from the prespraying population, 25% were reallocated as postintervention individuals. Only 11% of the insects were reassigned to other groups Puerto Casado and Casuarina. These results suggest that postspraying individuals appear to have different origins. Half of the postspraying individuals from 12 de Junio were similar to the sylvatic ones and 25% of these were similar to those captured in the prespraying period. This remarkable morphometric wings similarity between sylvatic and domestic populations is new evidence suggesting that they could be highly related to each other in the Paraguayan Chaco; human-fed bugs from sylvatic area also support this. © 2017 by The American Society of Tropical Medicine and Hygiene. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v97_n2_p481_DeArias http://hdl.handle.net/20.500.12110/paper_00029637_v97_n2_p481_DeArias |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Article domestic species female introduced species morphometry nonhuman Paraguay pesticide spraying survivor Triatoma infestans wing anatomy and histology animal comparative study domestic animal insect vector Triatoma wild animal wing Animals Animals, Domestic Animals, Wild Female Insect Vectors Paraguay Triatoma Wings, Animal |
| spellingShingle |
Article domestic species female introduced species morphometry nonhuman Paraguay pesticide spraying survivor Triatoma infestans wing anatomy and histology animal comparative study domestic animal insect vector Triatoma wild animal wing Animals Animals, Domestic Animals, Wild Female Insect Vectors Paraguay Triatoma Wings, Animal Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay |
| topic_facet |
Article domestic species female introduced species morphometry nonhuman Paraguay pesticide spraying survivor Triatoma infestans wing anatomy and histology animal comparative study domestic animal insect vector Triatoma wild animal wing Animals Animals, Domestic Animals, Wild Female Insect Vectors Paraguay Triatoma Wings, Animal |
| description |
Despite sustained efforts for eliminating Triatoma infestans, reinfestation still persists in large part of the endemic area of Chagas disease from the Gran Chaco region. Sylvatic T. infestans populations seem to threat success of control programs of domestic T. infestans. In this study, we analyzewhether T. infestans collected after a community-wide spraying were survivors or were immigrants from elsewhere using geometric morphometric tools. We used 101 right wings of female T. infestans captured before and after intervention program carried out in 12 de Junio and Casuarina, villages from Paraguayan Chaco, and in Puerto Casado during presprayed collection. There were no significant differences in wing size of domestic T. infestans between pre- and postspraying populations, and between domestic and sylvatic ones.When shape variables originating from postintervention individuals from 12 de Juniowere introduced one by one into a discriminant analysis, the greatest weight (53%)was allocated to the sylvatic group. Furthermore, from the prespraying population, 25% were reallocated as postintervention individuals. Only 11% of the insects were reassigned to other groups Puerto Casado and Casuarina. These results suggest that postspraying individuals appear to have different origins. Half of the postspraying individuals from 12 de Junio were similar to the sylvatic ones and 25% of these were similar to those captured in the prespraying period. This remarkable morphometric wings similarity between sylvatic and domestic populations is new evidence suggesting that they could be highly related to each other in the Paraguayan Chaco; human-fed bugs from sylvatic area also support this. © 2017 by The American Society of Tropical Medicine and Hygiene. |
| title |
Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay |
| title_short |
Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay |
| title_full |
Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay |
| title_fullStr |
Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay |
| title_full_unstemmed |
Morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (Hemiptera: Reduviidae) from the Gran Chaco Region of Paraguay |
| title_sort |
morphometric wings similarity among sylvatic and domestic populations of triatoma infestans (hemiptera: reduviidae) from the gran chaco region of paraguay |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v97_n2_p481_DeArias http://hdl.handle.net/20.500.12110/paper_00029637_v97_n2_p481_DeArias |
| _version_ |
1768543778219491328 |