Encontro de Haemagogus (Conopostegus) leucocelaenus (Diptera: Culicidae), no Município de Porto Alegre, Estado do Rio Grande do Sul

Gomes, Almério de Castro; Torres, Maria Amélia Nascimento; Ferri, Lisiane; Costa, Felipe Rocha da; Silva, Allan Martins da

doi:10.1590/s0037-86822007000400025

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…chloropterus females towards their hosts between the late morning hours and the early afternoon, a period of the day that corresponds to resting time for monkeys, the preferred hosts for these species. However, as found in other studies, these mosquitoes are also capable of using the forest floor, which was observed at the REBIO-Una and Lagoa Encantada sites (Guimarães et al 1985, Gomes et al 2007, Pinto et al 2009 janthinomys are an important vector of yellow-fever and Mayaro virus in sylvatic environments (Davis 1930, Thoisy et al 2003, Almeida et al 2014, while species of Sabethes are considered potential secondary vectors of yellow fever virus in Central and South America along with other arbovirus such as SLEV and ILHV (Forattini 1995). As described by Gomes et al (2010), species from the genus Sabethes were present in almost all of the same sites as Haemagogus sp.…”

Section: Evidence Of Forest Stratification In the Composition Of The supporting

confidence: 79%

Section: Evidence Of Forest Stratification In the Composition Of The ...supporting

confidence: 79%

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Diversity patterns of hematophagous insects in Atlantic forest fragments and human-modified areas of southern Bahia, Brazil

Catenacci

Neto

Deem

et al. 2018

Journal of Vector Ecology

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There have been several important outbreaks of mosquito‐borne diseases in the Neotropics in recent years, particularly in Brazil. Some taxa are also considered to be indicators of environmental health. Despite the importance of understanding insect abundance and distribution to the understanding of disease dynamics and design strategies to manage them, very little is known about their ecology in many tropical regions. We studied the abundance and diversity of mosquitoes and sand flies in the Bahia State of Brazil, a point of origin for arbovirus outbreaks, including Zika and Chikungunya fever. During 2009‐2014, 51 mosquito taxa were identified, belonging to three dipteran families, Ceratopogonidae, Culicidae, and Psychodidae. The family Culicidae, including the Sabethini tribe, were the most abundant (81.5%) and most taxa‐rich (n=45). While season (winter and summer) was a strong factor determinant of the occurrence of the most abundant taxa, the stratification level in the forest (ground or tree level) had a strong effect and the dominant taxa at ground level were completely different from the dominant species collected at tree level. We suggest that sites with a mix of forest and agroforestry systems support the highest biodiversity of hematophagous insects as compared to highly disturbed landscapes.

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Section: Evidence Of Forest Stratification In the Composition Of The supporting

confidence: 79%

Section: Evidence Of Forest Stratification In the Composition Of The ...supporting

confidence: 79%

Diversity patterns of hematophagous insects in Atlantic forest fragments and human-modified areas of southern Bahia, Brazil

Catenacci

Neto

Deem

et al. 2018

Journal of Vector Ecology

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“…Sylvatic YFV vectors are abundant in the treetops, with daytime activity peaking in the hottest hours of the day, corresponding to the resting period of the NHP in the canopy [87], favoring the hematophagy in NHP. H. leucocelaenus and H. janthinomys are primatophilic species, but occasionally they can be found at ground level in areas surrounding [88] or distant from the forests, including indoors [89], since they can can travel for long distances, as 5.7 km and 11.5 km, respectively [90]. H. leucocelaenus can adapt to human-modified environments, as periurban [83,86] and urban areas [91].…”

Section: Yellow Fever Virus Vectors In Brazilmentioning

confidence: 99%

Recent sylvatic yellow fever virus transmission in Brazil: the news from an old disease

Silva

Sacchetto

Rezende

et al. 2020

Virol J

118

166

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Yellow fever (YF) is an acute viral disease, affecting humans and non-human primates (NHP), caused by the yellow fever virus (YFV). Despite the existence of a safe vaccine, YF continues to cause morbidity and mortality in thousands of people in Africa and South America. Since 2016, massive YF outbreaks have taken place in Brazil, reaching YF-free zones, causing thousands of deaths of humans and NHP. Here we reviewed the main epidemiological aspects, new clinical findings in humans, and issues regarding YFV infection in vectors and NHP in Brazil. The 2016-2019 YF epidemics have been considered the most significant outbreaks of the last 70 years in the country, and the number of human cases was 2.8 times higher than total cases in the previous 36 years. A new YFV lineage was associated with the recent outbreaks, with persistent circulation in Southeast Brazil until 2019. Due to the high number of infected patients, it was possible to evaluate severity and death predictors and new clinical features of YF. Haemagogus janthinomys and Haemagogus leucocelaenus were considered the primary vectors during the outbreaks, and no human case suggested the occurrence of the urban transmission cycle. YFV was detected in a variety of NHP specimens presenting viscerotropic disease, similar to that described experimentally. Further studies regarding NHP sensitivity to YFV, YF pathogenesis, and the duration of the immune response in NHP could contribute to YF surveillance, control, and future strategies for NHP conservation.

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“…leucocelanus and Hg. janthinomys are considered primatophilic and typically found on the tree canopies, they can travel great distances and be found at ground level around forests or even feeding indoors in rural settings [45,[47][48][49]. The proximity of sylvatic vectors to peri-urban and urban areas should be of particular concern to public health authorities, considering the total reinfestation of major urban centers by Ae.…”

Section: Factors Shaping Yfv Transmission Cyclesmentioning

confidence: 99%

Re-emergence of yellow fever in the neotropics — quo vadis?

Sacchetto

Drumond

Han

et al. 2020

Emerging Topics in Life Sciences

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Yellow fever virus (YFV) is the etiological agent of yellow fever (YF), an acute hemorrhagic vector-borne disease with a significant impact on public health, is endemic across tropical regions in Africa and South America. The virus is maintained in two ecologically and evolutionary distinct transmission cycles: an enzootic, sylvatic cycle, where the virus circulates between arboreal Aedes species mosquitoes and non-human primates, and a human or urban cycle, between humans and anthropophilic Aedes aegypti mosquitoes. While the urban transmission cycle has been eradicated by a highly efficacious licensed vaccine, the enzootic transmission cycle is not amenable to control interventions, leading to recurrent epizootics and spillover outbreaks into human populations. The nature of YF transmission dynamics is multifactorial and encompasses a complex system of biotic, abiotic, and anthropogenic factors rendering predictions of emergence highly speculative. The recent outbreaks in Africa and Brazil clearly remind us of the significant impact YF emergence events pose on human and animal health. The magnitude of the Brazilian outbreak and spillover in densely populated areas outside the recommended vaccination coverage areas raised the specter of human — to — human transmission and re-establishment of enzootic cycles outside the Amazon basin. Herein, we review the factors that influence the re-emergence potential of YFV in the neotropics and offer insights for a constellation of coordinated approaches to better predict and control future YF emergence events.

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Encontro de Haemagogus (Conopostegus) leucocelaenus (Diptera: Culicidae), no Município de Porto Alegre, Estado do Rio Grande do Sul

Cited by 6 publications

References 4 publications

Diversity patterns of hematophagous insects in Atlantic forest fragments and human-modified areas of southern Bahia, Brazil

Diversity patterns of hematophagous insects in Atlantic forest fragments and human-modified areas of southern Bahia, Brazil

Recent sylvatic yellow fever virus transmission in Brazil: the news from an old disease

Re-emergence of yellow fever in the neotropics — quo vadis?

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