Ecological Suitability and Spatial Distribution of Five Anopheles Species in Amazonian Brazil

McKeon, Sascha N.; Schlichting, Carl D.; Póvoa, Marinete Marins; Conn, Jan E.

doi:10.4269/ajtmh.12-0203

Cited by 23 publications

(27 citation statements)

References 70 publications

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“…triannulatus s.l. are present in most Amazonian States and considered as secondary vectors because they are mostly zoophilic and exophilic [36,38,47,49,50,[54][55][56][57][64][65][66][67][68][69][70][71].…”

Section: The Amazon Rainforest Transmission Systemmentioning

confidence: 99%

A comprehensive analysis of malaria transmission in Brazil

Carlos

Rona

Christophides

et al. 2019

Pathogens and Global Health

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Malaria remains a serious public health problem in Brazil despite a significant drop in the number of cases in the past decade. We conduct a comprehensive analysis of malaria transmission in Brazil to highlight the epidemiologically most relevant components that could help tackle the disease. We consider factors impacting on the malaria burden and transmission dynamics including the geographical occurrence of both autochthonous and imported infections, the distribution and abundance of malaria vectors and records of natural mosquito infections with Plasmodium . Our analysis identifies three discrete malaria transmission systems related to the Amazon rainforest, Atlantic rainforest and Brazilian coast, respectively. The Amazonian system accounts for 99% of all malaria cases in the country. It is largely due to autochthonous P. vivax and P. falciparum transmission by mosquitoes of the Nyssorhynchus subgenus, primarily Anopheles darlingi . Whilst P. vivax transmission is widespread, P. falciparum transmission is restricted to hotspot areas mostly in the States of Amazonas and Acre. This system is the major source of P. vivax exportation to the extra-Amazonian regions that are also affected by importation of P. falciparum from Africa. The Atlantic system comprises autochthonous P. vivax transmission typically by the bromeliad-associated mosquitoes An. cruzii and An. bellator of the Kerteszia subgenus. An. cruzii also transmits simian malaria parasites to humans. The third, widespread but geographically fragmented, system is found along the Brazilian coast and comprises P. vivax transmission mainly by An. aquasalis . We conclude that these geographically and biologically distinct malaria transmission systems require specific strategies for effective disease control.

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Section: The Amazon Rainforest Transmission Systemmentioning

confidence: 99%

A comprehensive analysis of malaria transmission in Brazil

Carlos

Rona

Christophides

et al. 2019

Pathogens and Global Health

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“…These authors note that members of this group have also been reported from Bolivia, Costa Rica, French Guiana, Guatemala, Guyana, Panama, Peru, Suriname, and Uruguay, but specimens were not available to them for verification. McKeon et al () analyzed larval habitat characteristics (temperature, water chemistry, turbidity, water movement, shade, vegetation) of five species of Anopheles ( Nyssorhynchus ) in the Amazon, Brazil. They concluded that while An.…”

Section: Introductionmentioning

confidence: 99%

Geographic distribution, evolution, and disease importance of species within the NeotropicalAnopheles albitarsisGroup (Diptera, Culicidae)

Foley

Linton

Ruiz-Lopez

et al. 2014

Journal of Vector Ecology

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The Anopheles albitarsis group of mosquitoes comprises eight recognized species and one mitochondrial lineage. Our knowledge of malaria vectorial importance and the distribution and evolution of these taxa is incomplete. We constructed ecological niche models (ENMs) for these taxa and used hypothesized phylogenetic relationships and ENMs to investigate environmental and ecological divergence associated with speciation events. Two major clades were identified, one north (Clade 1) and one south (Clade 2) of the Amazon River that likely is or was a barrier to mosquito movement. Clade 1 species occur more often in higher average temperature locations than Clade 2 species, and taxon splits within Clade 1 corresponded with a greater divergence of variables related to precipitation than was the case within Clade 2. Comparison of the ecological profiles of sympatric species and sister species support the idea that phylogenetic proximity is related to ecological similarity. Anopheles albitarsis I, An. janconnae, and An. marajoara ENMs had the highest percentage of their predicted suitable habitat overlapping distribution models of Plasmodium falciparum and P. vivax, and warrant additional studies of the transmission potential of these species. Phylogenetic proximity may be related to malaria vectorial importance within the Albitarsis Group.

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“…The physico-chemical parameters viz., temperature, pH, alkalinity, conductivity, TDS are the important factors in mosquitoes occurrence. The larval aquatic stage is an important part of the mosquito life cycle and habitat requirements may strongly influence the distribution and abundance of many species involved in pathogen transmission (Mckeon et al, 2013;Senthamarai Selvan et al, 2015b). Breeding habitats have associated with distribution and abundance of mosquitoes and mosquito-borne diseases in many parts of the world, especially in warm and tropical climatic regions.…”

Section: Introductionmentioning

confidence: 99%

Influence of Meteorological Variables on Mosquitoes Breeding in Theni District, Tamilnadu, India

Selvan

Jebanesan

Subramaniam

et al. 2017

jmr

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The ecology, distribution and abundance of various mosquito vectors is important in the determination of disease prevalence in disease endemic areas. The present study is aimed to determine the distribution and abundance of mosquitoes in different habitats of Theni district, Tamilnadu, India. The influence of weather on mosquito populations was studied. All the possible permanent and temporary water bodies were surveyed in selected sites during dusk and dawn hours. Ten localities were randomly selected and sampled twice per month with 15 days interval for a period of six months, from July to December 2015. A total of 1226 individuals of 21 species belonging to 7 genera were identified. Among the collected specimens the Culex species were predominant in polluted water habitat followed by Aedes in fresh water. The high number of Shannon-Weiner diversity index was recorded for Culex (0.1596) and Aedes (0.1564) species, followed by Simpson's dominance index (0.1270) for Culex. The findings of this study highlight the importance of improperly maintained drainages, containers and unused things in study sites are engaged to mosquito development. This will be essential for designing and implementing mosquito control.

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Ecological Suitability and Spatial Distribution of Five Anopheles Species in Amazonian Brazil

Cited by 23 publications

References 70 publications

A comprehensive analysis of malaria transmission in Brazil

A comprehensive analysis of malaria transmission in Brazil

Geographic distribution, evolution, and disease importance of species within the NeotropicalAnopheles albitarsisGroup (Diptera, Culicidae)

Influence of Meteorological Variables on Mosquitoes Breeding in Theni District, Tamilnadu, India

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