Seasonal Occurrence of Immature Mosquitoes in Swimming Pools in Buenos Aires, Argentina

Fischer, Sylvia; Schweigmann, Nicolás

doi:10.2987/09-5932.1

Cited by 8 publications

(9 citation statements)

References 13 publications

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“…A growing body of literature on mosquito larval habitats has indicated that larvae of Cx. apicinus seem to be restricted to human-made containers [11, 67–70]. However, we found this species mainly in natural temporary pools associated with higher values of conductivity, water temperature and pH.…”

Section: Discussionmentioning

confidence: 66%

Mosquito (Diptera: Culicidae) larval ecology in natural habitats in the cold temperate Patagonia region of Argentina

et al. 2019

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Background Knowledge of immature habitats is an important focus for investigations of mosquito community ecology, and may improve our understanding of how environmental variables increase risk of mosquito-borne diseases by influencing the distributions and abundances of species. In Patagonia region, where climatic and ecological factors could be only borderline suitable for mosquito development, relatively little is known about larval ecology. The present study focuses on associations of environmental conditions in natural aquatic habitats with abundances of mosquito species that have colonized such habitats in Patagonia. Methods We described the mosquito community composition within 26 natural temporary pools, and assessed the general relationships between environmental variables (pH, water temperature, conductivity, salinity, dissolved oxygen, aquatic plant cover and main nutrients) and larval abundances using redundancy analysis (RDA). Additionally, we compiled monthly climate data and vegetation indices for each larval habitat, and estimated the probability of presence for two of the most abundant species, describing through generalized linear models (GLM) the environmental, climatic and landscape variables-probability of occurrence relationships. Results Seven species belonging to the genera Culex and Aedes were identified, with Culex apicinus , Cx. acharistus and Aedes albifasciatus being the most abundant. Mean larval densities were low (6.8 ± 2.8 larvae/dip), and the highest species richness and larval densities were recorded in northern and central areas. Aedes albifasciatus , a species of sanitary importance, was widely distributed, being the only one collected south of the 45th parallel of S latitude. RDA indicated that aquatic conductivity, pH, water depth, dissolved oxygen, ammonia and soluble reactive phosphorous accounted for the main part of the variation in the species composition. According to GLMs, wind speed was the variable that best described the presence of Ae. albifasciatus , and the probability of finding this species was positively associated with high wind speed values. On the other hand, the EVI vegetation index was the only variable included in the Cx. apicinus model, whereby there was a great probability of presence in arid areas with lower EVI values. Conclusions Our results enhance our knowledge of larval habitat ecology under the extreme environmental conditions of Patagonia and will guide future efforts to understand how multiple effects can affect mosquito ecology and public health at higher latitudes. Electronic supplementary material The online version of this article (10.1186/s13071-019-3459-y) contains supplementary material, which ...

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Section: Discussionmentioning

confidence: 66%

Mosquito (Diptera: Culicidae) larval ecology in natural habitats in the cold temperate Patagonia region of Argentina

et al. 2019

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“…In Buenos Aires Province (temperate climate), the presence of Cx. quinquefasciatus has also been reported throughout the year (Fischer et al 2000, Fischer & Schweigmann 2010) and immature stages of this species are generally most abundant in the summer (Fischer & Schweigmann 2004). In subtropical Chaco Province, Cx.…”

Section: Discussionmentioning

confidence: 94%

“…The number of studies addressing natural and artificial mosquito larval habitats has increased in recent years in the central (Almirón & Brewer 1996, Fischer et al 2000, Fischer & Schweigmann 2004, 2010, Pires & Gleiser 2010) and northeastern regions of Argentina (Stein et al 2002a, b, 2005, 2011). Cx.…”

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confidence: 99%

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Characterisation of Culex quinquefasciatus (Diptera: Culicidae) larval habitats at ground level and temporal fluctuations of larval abundance in Córdoba, Argentina

Grech

Sartor

Estallo

et al. 2013

Mem. Inst. Oswaldo Cruz

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The aims of this study were to characterise the ground-level larval habitats of the mosquito Culex quinquefasciatus, to determine the relationships between habitat characteristics and larval abundance and to examine seasonal larval-stage variations in Córdoba city. Every two weeks for two years, 15 larval habitats (natural and artificial water bodies, including shallow wells, drains, retention ponds, canals and ditches) were visited and sampled for larval mosquitoes. Data regarding the water depth, temperature and pH, permanence, the presence of aquatic vegetation and the density of collected mosquito larvae were recorded. Data on the average air temperatures and accumulated precipitation during the 15 days prior to each sampling date were also obtained. Cx. quinquefasciatus larvae were collected throughout the study period and were generally most abundant in the summer season. Generalised linear mixed models indicated the average air temperature and presence of dicotyledonous aquatic vegetation as variables that served as important predictors of larval densities. Additionally, permanent breeding sites supported high larval densities. In Córdoba city and possibly in other highly populated cities at the same latitude with the same environmental conditions, control programs should focus on permanent larval habitats with aquatic vegetation during the early spring, when the Cx. quinquefasciatus population begins to increase.

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“…Carbajo et al (2006) reported the ready adaptation of this vector species to urban areas. Gürtler et al (2009) andFisher &Schweigmann (2010) noted the effects of vegetation, shade conditions, improperly maintained swimming pools, and housing and waste management in areas with high human densities as factors that maintain high infestation levels of mosquito vectors, including Ae. aegypti.…”

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confidence: 99%

Seasonal Oviposition Activity ofAedes aegypti(Diptera: Culicidae) in San Miguel de Tucumán, Northwestern Argentina

Rodríguez

Aybar

Claps³

et al. 2015

Florida Entomologist

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Seasonal Occurrence of Immature Mosquitoes in Swimming Pools in Buenos Aires, Argentina

Cited by 8 publications

References 13 publications

Mosquito (Diptera: Culicidae) larval ecology in natural habitats in the cold temperate Patagonia region of Argentina

Mosquito (Diptera: Culicidae) larval ecology in natural habitats in the cold temperate Patagonia region of Argentina

Characterisation of Culex quinquefasciatus (Diptera: Culicidae) larval habitats at ground level and temporal fluctuations of larval abundance in Córdoba, Argentina

Seasonal Oviposition Activity ofAedes aegypti(Diptera: Culicidae) in San Miguel de Tucumán, Northwestern Argentina

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