Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus
Chagas disease is a major public health issue and is mainly spread by Triatominae insects (Hemiptera: Reduviidae). Rhodnius prolixus is the main vector species in Northern South America. Host-seeking behaviour in R. prolixus is mediated by different compounds that are produced by and emanate from th...
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| Format: | Article |
| Language: | English |
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Fundação Oswaldo Cruz (FIOCRUZ)
2011-06-01
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| Series: | Memorias do Instituto Oswaldo Cruz |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762011000400013&lng=en&tlng=en |
| _version_ | 1797721177711443968 |
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| author | Mario Iván Ortiz Alejandro Suárez-Rivillas Jorge Molina |
| author_facet | Mario Iván Ortiz Alejandro Suárez-Rivillas Jorge Molina |
| author_sort | Mario Iván Ortiz |
| collection | DOAJ |
| description | Chagas disease is a major public health issue and is mainly spread by Triatominae insects (Hemiptera: Reduviidae). Rhodnius prolixus is the main vector species in Northern South America. Host-seeking behaviour in R. prolixus is mediated by different compounds that are produced by and emanate from the host or microbiota on the host's skin. We tested the behavioural responses of sylvatic first filial generation (F1) and colony insects to extracts of human skin with a dual choice olfactometer. In addition, we compared the antennal phenotypes in both populations. No statistical differences were found between the two populations at the behavioural level. Both showed a preference for face and feet extracts and this effect was abolished for face extracts after treatment with an antibacterial gel. The observation of the antennal phenotype showed that there were differences between both groups in the total length, total surface area and number and density of bristles. However, the number and density of chemoreceptive sensilla (basiconic and thin and thick-walled trichoids) and the total density of sensilla did not show statistically significant differences. These results demonstrate that colony insects, which have only been fed with living hens for the last 30 years, are attracted by human skin extracts in a similar way as F1 sylvatic insects. |
| first_indexed | 2024-03-12T09:30:08Z |
| format | Article |
| id | doaj.art-1a7e76c447254275b3fefbe340f2f407 |
| institution | Directory Open Access Journal |
| issn | 1678-8060 |
| language | English |
| last_indexed | 2024-03-12T09:30:08Z |
| publishDate | 2011-06-01 |
| publisher | Fundação Oswaldo Cruz (FIOCRUZ) |
| record_format | Article |
| series | Memorias do Instituto Oswaldo Cruz |
| spelling | doaj.art-1a7e76c447254275b3fefbe340f2f4072023-09-02T13:54:26ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz1678-80602011-06-01106446146610.1590/S0074-02762011000400013S0074-02762011000400013Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixusMario Iván Ortiz0Alejandro Suárez-Rivillas1Jorge Molina2Universidad de Los AndesUniversidad de Los AndesUniversidad de Los AndesChagas disease is a major public health issue and is mainly spread by Triatominae insects (Hemiptera: Reduviidae). Rhodnius prolixus is the main vector species in Northern South America. Host-seeking behaviour in R. prolixus is mediated by different compounds that are produced by and emanate from the host or microbiota on the host's skin. We tested the behavioural responses of sylvatic first filial generation (F1) and colony insects to extracts of human skin with a dual choice olfactometer. In addition, we compared the antennal phenotypes in both populations. No statistical differences were found between the two populations at the behavioural level. Both showed a preference for face and feet extracts and this effect was abolished for face extracts after treatment with an antibacterial gel. The observation of the antennal phenotype showed that there were differences between both groups in the total length, total surface area and number and density of bristles. However, the number and density of chemoreceptive sensilla (basiconic and thin and thick-walled trichoids) and the total density of sensilla did not show statistically significant differences. These results demonstrate that colony insects, which have only been fed with living hens for the last 30 years, are attracted by human skin extracts in a similar way as F1 sylvatic insects.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762011000400013&lng=en&tlng=enRhodnius prolixusChagas diseaseskin odourschemoreceptionbacteriaantennal sensilla |
| spellingShingle | Mario Iván Ortiz Alejandro Suárez-Rivillas Jorge Molina Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus Memorias do Instituto Oswaldo Cruz Rhodnius prolixus Chagas disease skin odours chemoreception bacteria antennal sensilla |
| title | Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus |
| title_full | Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus |
| title_fullStr | Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus |
| title_full_unstemmed | Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus |
| title_short | Behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony Rhodnius prolixus |
| title_sort | behavioural responses to human skin extracts and antennal phenotypes of sylvatic first filial generation and long rearing laboratory colony rhodnius prolixus |
| topic | Rhodnius prolixus Chagas disease skin odours chemoreception bacteria antennal sensilla |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762011000400013&lng=en&tlng=en |
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