Spatial distribution of arboviral mosquito vectors (Diptera, Culicidae) in Vale do Ribeira in the South-eastern Brazilian Atlantic Forest

Mosquitoes are vectors of arboviruses that can cause encephalitis and hemorrhagic fevers in humans. Aedes serratus (Theobald), Aedes scapularis (Rondani) and Psorophora ferox (Von Humboldt) are potential vectors of arboviruses and are abundant in Vale do Ribeira, located in the Atlantic Forest in the southeast of the State of São Paulo, Brazil. The objective of this study was to predict the spatial distribution of these mosquitoes and estimate the risk of human exposure to mosquito bites. Results of the analyses show that humans are highly exposed to bites in the municipalities of Cananéia, Iguape and Ilha Comprida. In these localities the incidence of Rocio encephalitis was 2% in the 1970s. Furthermore, Ae. serratus, a recently implicated vector of yellow fever virus in the State of Rio Grande do Sul, should be a target for the entomological surveillance in the southeastern Atlantic Forest. Considering the continental dimensions of Brazil and the inherent difficulties in sampling its vast area, the habitat suitability method used in the study can be an important tool for predicting the distribution of vectors of pathogens.

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Temporal evolution and spatial distribution of maternal death

Revista de Saúde Pública ◽

10.1590/s0034-8910.2014048005220 ◽

2014 ◽

Vol 48 (4) ◽

pp. 662-670 ◽

Cited By ~ 7

Author(s):

Ioná Carreno ◽

Ana Lúcia de Lourenzi Bonilha ◽

Juvenal Soares Dias da Costa

Keyword(s):

Spatial Distribution ◽

Maternal Mortality ◽

Maternal Death ◽

Temporal Evolution ◽

Maternal Mortality Ratio ◽

Rio Grande ◽

The State ◽

Rio Grande Do Sul ◽

Maternal Risk ◽

Mortality Ratio

OBJECTIVE To analyze the temporal evolution of maternal mortality and its spatial distribution.METHODS Ecological study with a sample made up of 845 maternal deaths in women between 10 and 49 years, registered from 1999 to 2008 in the state of Rio Grande do Sul, Southern Brazil. Data were obtained from Information System on Mortality of Ministry of Health. The maternal mortality ratio and the specific maternal mortality ratio were calculated from records, and analyzed by the Poisson regression model. In the spatial distribution, three maps of the state were built with the rates in the geographical macro-regions, in 1999, 2003, and 2008.RESULTS There was an increase of 2.0% in the period of ten years (95%CI 1.00;1.04; p = 0.01), with no significant change in the magnitude of the maternal mortality ratio. The Serra macro-region presented the highest maternal mortality ratio (1.15, 95%CI 1.08;1.21; p < 0.001). Most deaths in Rio Grande do Sul were of white women over 40 years, with a lower level of education. The time of delivery/abortion and postpartum are times of increased maternal risk, with a greater negative impact of direct causes such as hypertension and bleeding.CONCLUSIONS The lack of improvement in maternal mortality ratio indicates that public policies had no impact on women’s reproductive and maternal health. It is needed to qualify the attention to women’s health, especially in the prenatal period, seeking to identify and prevent risk factors, as a strategy of reducing maternal death.

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CONHECENDO A PESCA ARTESANAL EM TRAMANDAÍ E IMBÉ – RS: DISTRIBUIÇÃO ESPACIAL E DESAFIOS

Ciência e Natura ◽

10.5902/2179460x24320 ◽

2017 ◽

Vol 39 (2) ◽

pp. 341

Author(s):

Abraão Martins Terceiro

Keyword(s):

Spatial Distribution ◽

Rio Grande ◽

Economic Importance ◽

The State ◽

Artisanal Fisheries ◽

Rio Grande Do Sul ◽

Popular Knowledge

The work deals with the theme artisanal fisheries and has as main objective, the characterization of the activity in the municipalities of Tramandaí and Imbé, located in the State of Rio Grande do Sul, the spatial distribution and the challenges to occur fisheries in this region. The research is justified by the large number of fishermen in the study area and the economic importance of the activity, mapping through popular knowledge areas of greatest value for fishing, the main existing species and the main features and instruments used in fish capture.

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Semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) from Rio Grande do Sul, southern Brazil

Check List ◽

10.15560/17.5.1323 ◽

2021 ◽

Vol 17 (5) ◽

pp. 1323-1343

Author(s):

Juliana Mourão dos Santos Rodrigues ◽

Oséias Martins Magalhães ◽

Evaldo Alves Joaquim Júnior ◽

José Ricardo Inacio Ribeiro ◽

Felipe Ferraz Figueiredo Moreira

Keyword(s):

Atlantic Forest ◽

New Records ◽

Rio Grande ◽

The State ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Pampa Biome ◽

First Time

Rio Grande do Sul (RS) is the southernmost state in Brazil and includes areas within the Pampa and Atlantic Forest biomes. The semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) from RS are poorly known, with only 14 previously recorded species. We carried out two expeditions in this state, in 2002 and 2019, across 19 municipalities. Here, we provide new records for 19 species, of which 13 are recorded for the first time from the state, five have their distributions expanded, and one is recorded again from a same locality previously reported in the literature. Furthermore, 13 species were collected for the first time in the Pampa biome and one in the Atlantic Forest.

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The assessment of annual rainfall field by applying different interpolation methods in the state of Rio Grande do Sul, Brazil

SN Applied Sciences ◽

10.1007/s42452-021-04679-1 ◽

2021 ◽

Vol 3 (7) ◽

Author(s):

Denis Rafael Silveira Ananias ◽

Gilberto Rodrigues Liska ◽

Luiz Alberto Beijo ◽

Geraldo José Rodrigues Liska ◽

Fortunato Silva de Menezes

Keyword(s):

Spatial Distribution ◽

Mean Squared Error ◽

Rio Grande ◽

The State ◽

Annual Rainfall ◽

Rio Grande Do Sul ◽

Rainfall Distribution ◽

Interpolation Methods ◽

Squared Error ◽

Rainfall Spatial Distribution

AbstractAn accurate analysis of spatial rainfall distribution is of great importance for managing watershed water resources, in addition to giving support to meteorological studies and agricultural planning. This work compares the performance of two interpolation methods: Inverse distance weighted (IDW) and Kriging, in the analysis of annual rainfall spatial distribution. We use annual rainfall data for the state of Rio Grande do Sul (Brazil) from 1961 to 2017. To determine which proportion of the sample results in more accurate rainfall distribution maps, we use a certain amount of points close to the estimated point. We use mean squared error (MSE), coefficient of determination (R2), root mean squared error (RMSE) and modified Willmott's concordance index (md). We conduct random fields simulations study, and the performance of the geostatistics and classic methods for the exposed case was evaluated in terms of precision and accuracy obtained by Monte Carlo simulation to support the results. The results indicate that the co-ordinary Kriging interpolator showed better goodness of fit, assuming altitude as a covariate. We concluded that the geostatistical method of Kriging using nine closer points (50% of nearest neighbors) was the one that better represented annual rainfall spatial distribution in the state of Rio Grande do Sul.

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Mammalia, Chiroptera, Molossidae, Molossus rufus É. Geoffroy, 1805: Distribution extension

Check List ◽

10.15560/8.2.291 ◽

2012 ◽

Vol 8 (2) ◽

pp. 291

Author(s):

Felipe B. Peters ◽

Paulo Ricardo de O. Roth ◽

Alexandre U. Christoff

Keyword(s):

Geographical Distribution ◽

Atlantic Forest ◽

New Records ◽

Rio Grande ◽

The State ◽

Rio Grande Do Sul ◽

Southern Limit ◽

Pampa Biome ◽

Forest Biome

This paper presents seven new records of occurrence of Molossus rufus for the state of Rio Grande do Sul, Brazil, three from the Atlantic Forest Biome and four from the Pampa Biome. The southern limit of the known geographical distribution of this species in Brazil is extended by 159 km.

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Lepidoptera, Nymphalidae, Heliconiinae, Heliconius sara apseudes (Hübner, 1813): distribution extension

Check List ◽

10.15560/6.2.316 ◽

2010 ◽

Vol 6 (2) ◽

pp. 316 ◽

Cited By ~ 2

Author(s):

Cristiano Agra Iserhard ◽

Ana Kristina Silva ◽

Marina Todeschini de Quadros ◽

Daniel Souza Castro ◽

Helena Piccoli Romanowski

Keyword(s):

Atlantic Forest ◽

Geographic Distribution ◽

New Records ◽

Rio Grande ◽

The State ◽

Rio Grande Do Sul ◽

Swamp Forest ◽

Northeast Region ◽

Moist Forest

This work presents new records and extends the geographic distribution of Heliconius sara apseudes in the Atlantic Forest of the state of Rio Grande do Sul. Five new records were taken along butterfly inventories carried out between 2005 and 2010 in distinct phytophysiognomies at Rio Grande do Sul northeast region: Swamp Forest, Atlantic Forest stricto sensu and Araucaria Moist Forest. The fact that all registers occurred in well preserved habitats of the Atlantic Forest emphasizes the need of conservation of this biome in Rio Grande do Sul.

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Land cover and conservation state of a region in the Southern limit of the Atlantic Forest (river Maquiné basin, Rio Grande do Sul, Brazil)

Brazilian Journal of Biology ◽

10.1590/s1519-69842004000400004 ◽

2004 ◽

Vol 64 (3b) ◽

pp. 569-582 ◽

Cited By ~ 13

Author(s):

F. G. Becker ◽

G. V. Irgang ◽

H. Hasenack ◽

F. S. Vilella ◽

N. F. Verani

Keyword(s):

Land Cover ◽

River Basin ◽

Atlantic Forest ◽

Rio Grande ◽

The State ◽

Future Research ◽

Rio Grande Do Sul ◽

Natural Forests ◽

Southern Limit ◽

Ombrophilous Forest

The state of conservation of Atlantic Forest in the Maquiné river basin was assessed using land cover data obtained from Landsat TM 5 satellite imagery (October 1995). The initial analysis examined the distribution of the relative areas of each land-cover type according to landscape slope classes, potential vegetation zones, and a 90 m riparian buffer. Land-cover classes were then regrouped into categories representing "low", "intermediate", and "high" degree of anthropogenic alteration. Results indicate that about 70% of the land cover of the Maquiné river basin has been highly altered as a consequence of replacement of natural forests by agriculture. Presently, a recovery process seems to be underway, contrasting with the historical trend towards deforestation. There are large areas of secondary vegetation in intermediate (34.8%) and advanced successional stages (20.2%), particularly across the range of the montane forest and of forest formations that occur at elevations higher than 800 m (high-montane dense ombrophilous forest and mixed ombrophilous forest). The geographical location at the southern limit of the Atlantic Forest stricto sensu and comparison of the results with data on the state of conservation of the Atlantic Forest in Rio Grande do Sul indicate that the Maquiné river basin is an important area for conservation. Some points regarding future research and conservation management are also discussed.

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Taeniophallus affinis (Günther, 1858) (Squamata, Serpentes, Dipsadidae): distribution extension, Rio Grande do Sul, Brazil

Check List ◽

10.15560/7.3.285 ◽

2011 ◽

Vol 7 (3) ◽

pp. 285 ◽

Cited By ~ 1

Author(s):

Almir de Paula ◽

Noeli Zanella ◽

Samara Arsego Guaragni

Keyword(s):

Atlantic Forest ◽

Rio Grande ◽

The State ◽

Brazilian Atlantic Forest ◽

Rio Grande Do Sul ◽

Male Specimen ◽

Northeastern Part

Taeniophallus affinis (Dipsadidae) has a distribution restricted to the Brazilian Atlantic Forest. We collected a male specimen at Parque Municipal de Sertão, state of Rio Grande do Sul, Brazil. This record extends the distribution of the species ca. 118 km S; it was previously known only from the northeastern part of the state.

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Metagenomic Sequencing Characterizes a Wide Diversity of Viruses in Field Mosquito Samples in Nigeria

10.21203/rs.3.rs-1014537/v1 ◽

2021 ◽

Author(s):

Judith Uche Oguzie ◽

Udoka Nwangwu ◽

Paul Oluniyi ◽

Testimony Olumade ◽

Uwem George ◽

...

Keyword(s):

Yellow Fever ◽

Yellow Fever Virus ◽

Human Populations ◽

Metagenomic Sequencing ◽

Mosquito Vectors ◽

Entomological Surveillance ◽

Pathogenic Potential ◽

Vector Borne ◽

Sample Set ◽

Significant Effort

Abstract Mosquito vectors are a tremendous public health threat as one in six diseases worldwide is vector-borne transmitted mainly by mosquitoes. In the last couple of years, there have been active Yellow fever virus (YFV) outbreaks in many settings in Nigeria, and nationwide, entomological surveillance has been a significant effort geared towards understanding these outbreaks. In this study, we used a metagenomic sequencing approach to characterize viruses present in vector samples collected during various outbreaks of Yellow fever (YF) in Nigeria between 2017 and 2020. Mosquito samples were grouped into pools of one to fifty mosquitoes, each based on species, sex and location. Twenty-five pools of Aedes spp and one pool of Anopheles spp collected from nine states were sequenced and metagenomic analysis was carried out. We identified a wide diversity of viruses belonging to various families in this sample set. Seven different viruses detected included: Fako virus, Phasi Charoen-like virus, Verdadero virus, Chaq like-virus, Aedes aegypti totivirus, cell fusing agent virus and Tesano Aedes virus. Although there are no reports of these viruses being pathogenic, they are an understudied group in the same families and closely related to known pathogenic arboviruses. Our work shows the revolutionary power of genomics to help detect the presence of viruses in mosquito vectors and unravel their pathogenic potential. This can help develop diagnostics and vaccines to help prevent the diseases caused by these viruses before they cause outbreaks in human populations.

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Real-Time Genomic Surveillance during the 2021 Re-Emergence of the Yellow Fever Virus in Rio Grande do Sul State and Brazil

Viruses ◽

10.3390/v13101976 ◽

2021 ◽

Vol 13 (10) ◽

pp. 1976

Author(s):

Miguel de S. Andrade ◽

Fabrício S. Campos ◽

Aline A. S. Campos ◽

Filipe V. S. Abreu ◽

Fernando L. Melo ◽

...

Keyword(s):

Yellow Fever ◽

Temporal Dynamics ◽

Yellow Fever Virus ◽

Rio Grande ◽

The State ◽

Fever Virus ◽

Rio Grande Do Sul ◽

Sequence Of Events ◽

Risk Areas ◽

Spatio Temporal

The 2021 re-emergence of yellow fever in non-human primates in the state of Rio Grande do Sul (RS), southernmost Brazil, resulted in the death of many howler monkeys (genus Alouatta) and led the state to declare a Public Health Emergency of State Importance, despite no human cases reported. In this study, near-complete genomes of yellow fever virus (YFV) recovered from the outbreak were sequenced and examined aiming at a better understanding of the phylogenetic relationships and the spatio-temporal dynamics of the virus distribution. Our results suggest that the most likely sequence of events involved the reintroduction of YFV from the state of São Paulo to RS through the states of Paraná and Santa Catarina, by the end of 2020. These findings reinforce the role of genomic surveillance in determining the pathways of distribution of the virus and in providing references for the implementation of preventive measures for populations in high risk areas.

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