Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil
Rural settlements are social arrangements expanding in the Amazon region, which generate disturbances in the natural environment, thus affecting the ecology of the species of Anopheles and thus the malaria transmission. Larval habitats are important sources for maintenance of mosquito vector populat...
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todo:paper_0001706X_v164_n_p243_RufalcoMoutinho2023-10-03T13:51:43Z Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil Rufalco-Moutinho, P. Schweigmann, N. Bergamaschi, D.P. Mureb Sallum, M.A. Amazon region Anopheles sp Anthropogenic environment Larval habitats Malaria frontier disease transmission disease vector epidemiology larva malaria mosquito rural area Anopheles Anopheles darlingi Anopheles triannulatus aquatic environment arthropod larva Article Brazil environmental change habitat malaria nonhuman Nyssorhynchus river basin rural population Stethomyia animal Anopheles classification cross-sectional study ecology ecosystem environmental protection human insect vector larva malaria parasitology physiology population density river species difference transmission Amazonia Brazil Nyssorhynchus Stethomyia fresh water Animals Anopheles Brazil Conservation of Natural Resources Cross-Sectional Studies Ecology Ecosystem Fresh Water Humans Insect Vectors Larva Malaria Population Density Rivers Rural Population Species Specificity Rural settlements are social arrangements expanding in the Amazon region, which generate disturbances in the natural environment, thus affecting the ecology of the species of Anopheles and thus the malaria transmission. Larval habitats are important sources for maintenance of mosquito vector populations, and holding back a natural watercourse is a usual process in the establishment of rural settlements, since the formation of micro-dams represents a water resource for the new settlers. Identifying characteristics of the larval habitats that may be associated with both the presence and abundance of Anopheles vectors species in an environment under ecological transition is background for planning vector control strategies in rural areas in the Amazon. Anopheles larvae collections were performed in two major types of habitats: natural and flow-limited water collections that were constructed by holding back the original watercourse. A total of 3123 Anopheles spp. larvae were captured in three field-sampling collections. The majority of the larvae identified were taken from flow-limited water collections belonged to species of the Nyssorhynchus subgenus (92%), whereas in the natural larval habitats a fewer number of individuals belonged to the Stethomyia (5%) and Anopheles (3%) subgenera. The total of Nyssorhynchus identified (1818), 501 specimens belonged to An. darlingi, 750 to An. triannulatus and 567 for others remaining species. In addition, 1152 could not be identified to subgenus/species level, because they were either in the first-instar or damaged. The primary vector in areas of the Amazon river basin, An. darlingi, was found exclusively in man-made habitats. Statistical analysis display An. triannulatus with specialist behavior for characteristics of man-made habitats. Modifications in the natural environment facilitate the rise of larval habitats for species with epidemiological importance for malaria in the region. This study showed that man-made habitats flow-limited water collections from dry lands could be a factor associated with the increase of An. darlingi and An. triannulatus populations, and other Nyssorhynchus species as well in endemic areas of the Amazon Region. © 2016 Elsevier B.V. Fil:Schweigmann, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0001706X_v164_n_p243_RufalcoMoutinho |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Amazon region Anopheles sp Anthropogenic environment Larval habitats Malaria frontier disease transmission disease vector epidemiology larva malaria mosquito rural area Anopheles Anopheles darlingi Anopheles triannulatus aquatic environment arthropod larva Article Brazil environmental change habitat malaria nonhuman Nyssorhynchus river basin rural population Stethomyia animal Anopheles classification cross-sectional study ecology ecosystem environmental protection human insect vector larva malaria parasitology physiology population density river species difference transmission Amazonia Brazil Nyssorhynchus Stethomyia fresh water Animals Anopheles Brazil Conservation of Natural Resources Cross-Sectional Studies Ecology Ecosystem Fresh Water Humans Insect Vectors Larva Malaria Population Density Rivers Rural Population Species Specificity |
| spellingShingle |
Amazon region Anopheles sp Anthropogenic environment Larval habitats Malaria frontier disease transmission disease vector epidemiology larva malaria mosquito rural area Anopheles Anopheles darlingi Anopheles triannulatus aquatic environment arthropod larva Article Brazil environmental change habitat malaria nonhuman Nyssorhynchus river basin rural population Stethomyia animal Anopheles classification cross-sectional study ecology ecosystem environmental protection human insect vector larva malaria parasitology physiology population density river species difference transmission Amazonia Brazil Nyssorhynchus Stethomyia fresh water Animals Anopheles Brazil Conservation of Natural Resources Cross-Sectional Studies Ecology Ecosystem Fresh Water Humans Insect Vectors Larva Malaria Population Density Rivers Rural Population Species Specificity Rufalco-Moutinho, P. Schweigmann, N. Bergamaschi, D.P. Mureb Sallum, M.A. Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil |
| topic_facet |
Amazon region Anopheles sp Anthropogenic environment Larval habitats Malaria frontier disease transmission disease vector epidemiology larva malaria mosquito rural area Anopheles Anopheles darlingi Anopheles triannulatus aquatic environment arthropod larva Article Brazil environmental change habitat malaria nonhuman Nyssorhynchus river basin rural population Stethomyia animal Anopheles classification cross-sectional study ecology ecosystem environmental protection human insect vector larva malaria parasitology physiology population density river species difference transmission Amazonia Brazil Nyssorhynchus Stethomyia fresh water Animals Anopheles Brazil Conservation of Natural Resources Cross-Sectional Studies Ecology Ecosystem Fresh Water Humans Insect Vectors Larva Malaria Population Density Rivers Rural Population Species Specificity |
| description |
Rural settlements are social arrangements expanding in the Amazon region, which generate disturbances in the natural environment, thus affecting the ecology of the species of Anopheles and thus the malaria transmission. Larval habitats are important sources for maintenance of mosquito vector populations, and holding back a natural watercourse is a usual process in the establishment of rural settlements, since the formation of micro-dams represents a water resource for the new settlers. Identifying characteristics of the larval habitats that may be associated with both the presence and abundance of Anopheles vectors species in an environment under ecological transition is background for planning vector control strategies in rural areas in the Amazon. Anopheles larvae collections were performed in two major types of habitats: natural and flow-limited water collections that were constructed by holding back the original watercourse. A total of 3123 Anopheles spp. larvae were captured in three field-sampling collections. The majority of the larvae identified were taken from flow-limited water collections belonged to species of the Nyssorhynchus subgenus (92%), whereas in the natural larval habitats a fewer number of individuals belonged to the Stethomyia (5%) and Anopheles (3%) subgenera. The total of Nyssorhynchus identified (1818), 501 specimens belonged to An. darlingi, 750 to An. triannulatus and 567 for others remaining species. In addition, 1152 could not be identified to subgenus/species level, because they were either in the first-instar or damaged. The primary vector in areas of the Amazon river basin, An. darlingi, was found exclusively in man-made habitats. Statistical analysis display An. triannulatus with specialist behavior for characteristics of man-made habitats. Modifications in the natural environment facilitate the rise of larval habitats for species with epidemiological importance for malaria in the region. This study showed that man-made habitats flow-limited water collections from dry lands could be a factor associated with the increase of An. darlingi and An. triannulatus populations, and other Nyssorhynchus species as well in endemic areas of the Amazon Region. © 2016 Elsevier B.V. |
| format |
JOUR |
| author |
Rufalco-Moutinho, P. Schweigmann, N. Bergamaschi, D.P. Mureb Sallum, M.A. |
| author_facet |
Rufalco-Moutinho, P. Schweigmann, N. Bergamaschi, D.P. Mureb Sallum, M.A. |
| author_sort |
Rufalco-Moutinho, P. |
| title |
Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil |
| title_short |
Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil |
| title_full |
Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil |
| title_fullStr |
Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil |
| title_full_unstemmed |
Larval habitats of Anopheles species in a rural settlement on the malaria frontier of southwest Amazon, Brazil |
| title_sort |
larval habitats of anopheles species in a rural settlement on the malaria frontier of southwest amazon, brazil |
| url |
http://hdl.handle.net/20.500.12110/paper_0001706X_v164_n_p243_RufalcoMoutinho |
| work_keys_str_mv |
AT rufalcomoutinhop larvalhabitatsofanophelesspeciesinaruralsettlementonthemalariafrontierofsouthwestamazonbrazil AT schweigmannn larvalhabitatsofanophelesspeciesinaruralsettlementonthemalariafrontierofsouthwestamazonbrazil AT bergamaschidp larvalhabitatsofanophelesspeciesinaruralsettlementonthemalariafrontierofsouthwestamazonbrazil AT murebsallumma larvalhabitatsofanophelesspeciesinaruralsettlementonthemalariafrontierofsouthwestamazonbrazil |
| _version_ |
1807319354615791616 |