The Influence of the pH and Salinity of Water in Breeding Sites on the Occurrence and Community Composition of Immature Mosquitoes in the Green Belt of the City of São Paulo, Brazil

Multini, Laura Cristina; Oliveira-Christe, Rafael; Medeiros‐Sousa, Antônio Ralph; Evangelista, Eduardo; Barrio-Nuevo, Karolina Morales; Mucci, Luís Filipe; Ceretti-Júnior, Walter; Camargo, Amanda Alves; Wilke, André Barretto Bruno; Marrelli, Mauro Toledo

doi:10.3390/insects12090797

Cited by 19 publications

(27 citation statements)

References 59 publications

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“…Aedes aegypti immature abundance was affected by the physical parameters of the containers, chemical parameters of the water within the containers and environmental parameters external to containers. Previous studies have also detected an impact of the physicochemical parameters of the water in containers, such as salinity, EC, dissolved oxygen and pH on Aedes immature stages or productivity [ 57 , 58 ]. The results of our study suggest a negative correlation between Ae.…”

Section: Discussionmentioning

confidence: 99%

Impact of physicochemical parameters of Aedes aegypti breeding habitats on mosquito productivity and the size of emerged adult mosquitoes in Ouagadougou City, Burkina Faso

et al. 2022

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Background Outbreaks of dengue fever caused by viruses transmitted by Aedes aegypti mosquitoes are repeated occurrences in West Africa. In recent years, Burkina Faso has experienced major dengue outbreaks, most notably in 2016 and 2017 when 80% of cases were recorded in Ouagadougou City (Central Health Region). In order to better understand the ecology of this vector and to provide information for use in developing control measures, a study on the characteristics of Aedes container breeding sites and the productivity of such sites, as measured by the abundance of immature stages and resultant adult body size, was undertaken in three health districts (Baskuy, Bogodogo and Nongremassom) of Ouagadougou. Methods Adult mosquitoes were collected indoors and outdoors in 643 households during the rainy season from August to October 2018. The presence of water containers was systematically recorded and the containers examined for the presence or absence of larvae. Characteristics of the container breeding sites, including size of the container and temperature, pH and conductivity of the water contained within, were recorded as well as the volume of water. Traditional Stegomyia indices were calculated as quantitative indicators of the risk of dengue outbreaks; generalised mixed models were fitted to larval and pupal densities, and the contribution of each covariate to the model was evaluated by the Z-value and associated P-value. Results A total of 1061 container breeding sites were inspected, of which 760 contained immature stages of Ae. aegypti (‘positive’ containers). The most frequent container breeding sites found in each health district were tyres and both medium (buckets/cans/pots) and large (bins/barrels/drums) containers; these containers were also the most productive larval habitats and the types that most frequently tested positive. Of the Stegomyia indices, the Breteau, House and Container indices exceeded WHO dengue risk thresholds. Generalised linear mixed models showed that larval and pupal abundances were associated with container type, physicochemical characteristics of the water and collection month, but there were significant differences among container types and among health districts. Aedes aegypti body size was positively associated with type and diameter of the container, as well as with electrical conductivity of the water, and negatively associated with pH and temperature of the water and with the level of exposure of the container to sunlight. Conclusion This study provides data on putative determinants of the productivity of habitats regarding Ae. aegypti immature stages. These data are useful to better understand Ae. aegypti proliferation. The results suggest that identifying and targeting the most productive container breeding sites could contribute to dengue vector control strategies in Burkina Faso. Graphical Abstract

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Section: Discussionmentioning

confidence: 99%

Impact of physicochemical parameters of Aedes aegypti breeding habitats on mosquito productivity and the size of emerged adult mosquitoes in Ouagadougou City, Burkina Faso

et al. 2022

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“…Investigating physical and chemical parameters of the water of the breeding sites in the EPA and CSP also revealed a significant association between mosquito species occurrence and habitat pH (Multini et al 2021). The type of aquatic habitat also had a significant influence on mosquito species distribution.…”

Section: Mosquito Diversity In the City Of São Paulomentioning

confidence: 92%

“…The type of aquatic habitat also had a significant influence on mosquito species distribution. pH values had a statistically significant influence on mosquito species occurrence and community composition, regardless of the type of aquatic habitat, suggesting that this parameter drives mosquito population dynamics and species distribution (Multini et al 2021). Investigating the interactions between immature mosquitoes and the environment in which they develop is important to elucidate the factors driving their incidence and abundance and could be an important tool in planning and implementing immature mosquito control practices.…”

Section: Mosquito Diversity In the City Of São Paulomentioning

confidence: 99%

“…Mosquitoes were collected in immature and adult phases using various methods and then identified and separated for flavivirus analyses and investigation of blood meal sources of mosquitoes. The possible presence of arbovirus, mainly Flavivirus, in the collected mosquitoes was investigated and at the same time investigated the possible virological infections of birds that frequent or nest in the parks of São Paulo (Natal-Fernandes et al 2016, Orico et al 2016). The study failed to find any flaviviruses of medical importance in the municipal parks of São Paulo, however, nucleotide sequences of Culex flavivirus (CxFV) and Aedes flavivirus (AeFV) were detected in the mosquitoes (Natal-Fernandes et al 2016).…”

Section: Mosquito Diversity In the City Of São Paulomentioning

confidence: 99%

“…The possible presence of arbovirus, mainly Flavivirus, in the collected mosquitoes was investigated and at the same time investigated the possible virological infections of birds that frequent or nest in the parks of São Paulo (Natal-Fernandes et al 2016, Orico et al 2016). The study failed to find any flaviviruses of medical importance in the municipal parks of São Paulo, however, nucleotide sequences of Culex flavivirus (CxFV) and Aedes flavivirus (AeFV) were detected in the mosquitoes (Natal-Fernandes et al 2016). This was the first report of CxFV and AEFV in the city of São Paulo and Latin America, respectively.…”

Section: Mosquito Diversity In the City Of São Paulomentioning

confidence: 99%

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Biodiversity and public health interface

2022

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Alongside modernity, the human activity has been a key factor in global environmental risks, with worldwide anthropic modification being the cause of the emergence of diseases for wild and livestock animals, and even humans. In special, the increase in the spatial distribution and in the incidence of some emerging infectious diseases (EID) are directly associated to deforestation and global climate changes. Moreover, the arise of new EID agents, such as the SARS-COV-2 have been reported for the last 30 years. On the other hand, biodiversity has been shown to be a key indicator for ecosystem health, and to pose a role to increase the promotion of human public health. In neotropical regions, and in special, in Brazil, several infectious diseases have been demonstrated to be directly affected for the biodiversity loss, such as malaria, hantavirus pulmonary syndrome, yellow fever, urban arboviruses, spotted fever, amongst other. To better understand the ecosystem capacity of regulation of infectious diseases, FAPESP BIOTA program have supported researchers and research projects to increase knowledge about Brazilian biodiversity and the ecosystems, such as diversity of bird bioagents, venomous animals biodiversity, diversity of mosquitos species in forest patches inside urban areas, propagation of the yellow fever virus over fragmented forest territories, loss of ecological corridors and occurrence of spotted fever and malaria, amongst others. It is noteworthy that FAPESP BIOTA is a successful program and must be expanded as an important tool for present and future public health promotion.

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Modeling the effects of species associations and abiotic parameters on the abundance of mosquito species in a Mediterranean wetland

Shittu,

Thomas,

Roiz

et al. 2024

Wetlands Ecol Manage

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Recent outbreaks of the West Nile virus have been reported in southern Spain, a region with important wetland habitats for migratory birds. Here, we analyzed the role of species association and abiotic parameters on the abundance of seven mosquito species in the Doñana National Park, Spain. We applied the Joint Species Distribution Models (JSDM), using the Hierarchical Modeling of Species Communities approach to simultaneously model the effect of habitat type, normalized difference vegetation index, hydroperiod, distance to rivers, land surface temperature, and the abundance of seven mosquito species. We created three models with varied parameters and evaluated the effects of abiotic parameters and species-to-species associations, which served as proxies for species interactions. Our models estimated the species-specific responses of the mosquito community to abiotic parameters. A positive association was identified within the Culex community with potential biotic interactions. However, Ochlerotatus caspius, Ochlerotatus detritus, and Anopheles atroparvus had no statistically significant association with each other and with the Culex species after accounting for the effect of abiotic parameters. We also found that the potential species associations estimated at particular sites and abiotic parameters influenced the model projection for the average abundance of mosquito species. The JSDM will allow spatial projection of the abundance of each mosquito species, which is an important parameter for epidemiological models. The JSDM inference of species association is important because predation, competition, and facilitation affect the distribution and abundance of different species.

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The Influence of the pH and Salinity of Water in Breeding Sites on the Occurrence and Community Composition of Immature Mosquitoes in the Green Belt of the City of São Paulo, Brazil

Cited by 19 publications

References 59 publications

Impact of physicochemical parameters of Aedes aegypti breeding habitats on mosquito productivity and the size of emerged adult mosquitoes in Ouagadougou City, Burkina Faso

Impact of physicochemical parameters of Aedes aegypti breeding habitats on mosquito productivity and the size of emerged adult mosquitoes in Ouagadougou City, Burkina Faso

Biodiversity and public health interface

Modeling the effects of species associations and abiotic parameters on the abundance of mosquito species in a Mediterranean wetland

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