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Dynamics between sylvatic, peridomestic and domestic populations of Triatoma brasiliensis (Hemiptera: Reduviidae) in Ceará State, Northeastern Brazil
Triatoma brasiliensis is the most important Chagas disease vector in the drier regions of the “Brazilian Caatinga”, colonizing both sylvatic and domestic environments, usually forming abundant colonies. Control trials using insecticides against domestic and peridomestic populations suggest that the...
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| Published in: | Acta tropica 2005, Vol.93 (1), p.119-126 |
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| creator | Borges, Érika Carime Dujardin, Jean-Pierre Schofield, Chris John Romanha, Alvaro José Diotaiuti, Liléia |
| description | Triatoma brasiliensis is the most important Chagas disease vector in the drier regions of the “Brazilian Caatinga”, colonizing both sylvatic and domestic environments, usually forming abundant colonies. Control trials using insecticides against domestic and peridomestic populations suggest that the
T. brasiliensis has a high capacity to repopulate treated habitats from the neighboring sylvatic populations, making its elimination more complex. The aim of this work was to determine genetic variability among sylvatic, peridomestic and domestic populations of
T. brasiliensis using head morphometry and random amplified polymorphic DNA (RAPD). Both morphometric analysis and RAPD patterns showed a separation between sylvatic and domestic populations, being the peridomestic ones between them. Based on this data, we suggest that there exists a flow between natural and artificial environments, being the peridomestic population mainly responsible for this interchange. It is possible that the peridomestic environment is maintaining the variability on the insects found on artificial habitats, which guarantee
T. brasiliensis success on adaptation in both environments and also increase the risk of introduction of new
Trypanosoma cruzi strains in the domestic cycle of Chagas disease in this region. |
| doi_str_mv | 10.1016/j.actatropica.2004.10.002 |
| format | article |
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T. brasiliensis has a high capacity to repopulate treated habitats from the neighboring sylvatic populations, making its elimination more complex. The aim of this work was to determine genetic variability among sylvatic, peridomestic and domestic populations of
T. brasiliensis using head morphometry and random amplified polymorphic DNA (RAPD). Both morphometric analysis and RAPD patterns showed a separation between sylvatic and domestic populations, being the peridomestic ones between them. Based on this data, we suggest that there exists a flow between natural and artificial environments, being the peridomestic population mainly responsible for this interchange. It is possible that the peridomestic environment is maintaining the variability on the insects found on artificial habitats, which guarantee
T. brasiliensis success on adaptation in both environments and also increase the risk of introduction of new
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T. brasiliensis has a high capacity to repopulate treated habitats from the neighboring sylvatic populations, making its elimination more complex. The aim of this work was to determine genetic variability among sylvatic, peridomestic and domestic populations of
T. brasiliensis using head morphometry and random amplified polymorphic DNA (RAPD). Both morphometric analysis and RAPD patterns showed a separation between sylvatic and domestic populations, being the peridomestic ones between them. Based on this data, we suggest that there exists a flow between natural and artificial environments, being the peridomestic population mainly responsible for this interchange. It is possible that the peridomestic environment is maintaining the variability on the insects found on artificial habitats, which guarantee
T. brasiliensis success on adaptation in both environments and also increase the risk of introduction of new
Trypanosoma cruzi strains in the domestic cycle of Chagas disease in this region.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Brazil</subject><subject>Chagas disease</subject><subject>Chagas Disease - prevention & control</subject><subject>Chagas Disease - transmission</subject><subject>DNA - chemistry</subject><subject>DNA - genetics</subject><subject>Environment</subject><subject>Female</subject><subject>Gene flow</subject><subject>General aspects</subject><subject>Head morphometry</subject><subject>Hemiptera</subject><subject>Insect Vectors - anatomy & histology</subject><subject>Insect Vectors - genetics</subject><subject>Insect Vectors - growth & development</subject><subject>Insect Vectors - parasitology</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Phylogeny</subject><subject>Populational dynamics</subject><subject>Random Amplified Polymorphic DNA Technique</subject><subject>RAPD</subject><subject>Reduviidae</subject><subject>Statistics, Nonparametric</subject><subject>Triatoma - anatomy & histology</subject><subject>Triatoma - genetics</subject><subject>Triatoma - growth & development</subject><subject>Triatoma - parasitology</subject><subject>Triatoma brasiliensis</subject><subject>Trypanosoma cruzi</subject><subject>Trypanosoma cruzi - growth & development</subject><issn>0001-706X</issn><issn>1873-6254</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqNkc-O0zAQhyMEYsvCKyBzAIG0KWM7cRxuUP4s0gokWCRu0dQZC1dJnLWTovIg3HkWXgxXrVhuy8ka-xuPf_6y7BGHJQeunm-WaCacgh-dwaUAKNL-EkDcyhZcVzJXoixuZwsA4HkF6utJdi_GTapEVYq72QkvS11rKBbZz9e7AXtnIlvT9J1oYHHXbXFy5oyNFFzre4qpYji07G8x-nHuEuSHyLxll8Hh5Htk64DRdY6G6CJ7ek69GycK-IJ9onbeOtciPWNuYCvC8PsX-5xC0Bn74MP0jTAmdGCvAv5w3f3sjsUu0oPjepp9efvmcnWeX3x893718iI3haqmXFlSBWhTCgRQEkBbUHWpleamXVfAQYNdSyoLDigLU7VWYSu41ZY41SRPsyeHe8fgr-YUruldNNR1OJCfY6MqKYQs4EZQCilKEPpGkNcVaFmKBNYH0AQfYyDbjMH1GHYNh2avudk0_2hu9pr3R0lz6n14HDKve2qvO49eE_D4CGA02NmAg3HxmlOyAin2sVYHjtInbx2FJpqkz1DrApmpab37j-f8ARBvzsQ</recordid><startdate>2005</startdate><enddate>2005</enddate><creator>Borges, Érika Carime</creator><creator>Dujardin, Jean-Pierre</creator><creator>Schofield, Chris John</creator><creator>Romanha, Alvaro José</creator><creator>Diotaiuti, Liléia</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SS</scope><scope>M7N</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>2005</creationdate><title>Dynamics between sylvatic, peridomestic and domestic populations of Triatoma brasiliensis (Hemiptera: Reduviidae) in Ceará State, Northeastern Brazil</title><author>Borges, Érika Carime ; 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Control trials using insecticides against domestic and peridomestic populations suggest that the
T. brasiliensis has a high capacity to repopulate treated habitats from the neighboring sylvatic populations, making its elimination more complex. The aim of this work was to determine genetic variability among sylvatic, peridomestic and domestic populations of
T. brasiliensis using head morphometry and random amplified polymorphic DNA (RAPD). Both morphometric analysis and RAPD patterns showed a separation between sylvatic and domestic populations, being the peridomestic ones between them. Based on this data, we suggest that there exists a flow between natural and artificial environments, being the peridomestic population mainly responsible for this interchange. It is possible that the peridomestic environment is maintaining the variability on the insects found on artificial habitats, which guarantee
T. brasiliensis success on adaptation in both environments and also increase the risk of introduction of new
Trypanosoma cruzi strains in the domestic cycle of Chagas disease in this region.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><pmid>15589804</pmid><doi>10.1016/j.actatropica.2004.10.002</doi><tpages>8</tpages></addata></record> |
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| ispartof | Acta tropica, 2005, Vol.93 (1), p.119-126 |
| issn | 0001-706X 1873-6254 |
| language | eng |
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| source | ScienceDirect Freedom Collection |
| subjects | Animals Biological and medical sciences Brazil Chagas disease Chagas Disease - prevention & control Chagas Disease - transmission DNA - chemistry DNA - genetics Environment Female Gene flow General aspects Head morphometry Hemiptera Insect Vectors - anatomy & histology Insect Vectors - genetics Insect Vectors - growth & development Insect Vectors - parasitology Male Medical sciences Phylogeny Populational dynamics Random Amplified Polymorphic DNA Technique RAPD Reduviidae Statistics, Nonparametric Triatoma - anatomy & histology Triatoma - genetics Triatoma - growth & development Triatoma - parasitology Triatoma brasiliensis Trypanosoma cruzi Trypanosoma cruzi - growth & development |
| title | Dynamics between sylvatic, peridomestic and domestic populations of Triatoma brasiliensis (Hemiptera: Reduviidae) in Ceará State, Northeastern Brazil |
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