Densidade de oviposição, e quantificação de Larvas e Pupas de Mansonia Blanchard, 1901 (Diptera: Culicidae), em Eichhornia crassipes Solms. e Pistia stratiotes Linn. Na ilha da Marchantaria, Amazônia Central

Ferreira, Ruth Leila Menezes

doi:10.1590/1809-43921999291134

Cited by 8 publications

(7 citation statements)

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“…Entomological inventories conducted in the Amazon basin have already recorded the six species of Mansonia that are in the present study ( Ferreira 1999 , 2003 ; Hutchings et al 2008 , 2020 ). The greater diversity and abundance of the genus Mansonia has been reported in the areas close to white-water lakes or muddy rivers ( Ferreira 1999 , Araújo et al 2020 ), as compared to dark water rivers, such as the Negro River ( Hutchings et al 2005 , 2013 , 2016 ).…”

Section: Discussionsupporting

confidence: 55%

“…Entomological monitoring in the Amazon region generally focuses on the study of disease vectors, such as Anopheles darlingi , which is an important vector of malaria in the Amazon region. ( Tadei 1996 , Quintero et al 1996 , Ferreira 1999 , Tadei and Thatcher 2000 , Cruz et al 2009 ). In case of genus Mansonia , the prerequisite of medical importance cannot be applied, as there are no occurrences in Brazil yet that can relate them to the transmission of human diseases ( Atoni et al 2019 ).…”

Section: Discussionmentioning

confidence: 99%

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Seasonality and Biting Behavior ofMansonia(Diptera, Culicidae) in Rural Settlements Near Porto Velho, State of Rondônia, Brazil

Galardo

Hijjar²,

Falcão³

et al. 2022

Journal of Medical Entomology

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Mansonia (Diptera: Culicidae) are known to cause discomfort to the local populations of Amazon. Considering the fact that the effective control of these mosquitoes can only be obtained by understanding their ecology and behavior, entomological monitoring becomes essential. In view of this, mosquitoes of the genus Mansonia were collected by human landing catches (HLC) from 2015 to 2019, in four locations of Porto Velho, Rondônia, Brazil. The collections were performed inside and outside the homes, once in every four months, uninterrupted for 24 hr. Human bite indices/hour was used to analyze the hourly activity of the species for different seasons and environment (indoor and outdoor). Moreover, nonparametric Mann–Whitney tests were conducted to indicate if there were differences between exophagic and endophagic behavior. The seasonality of Mansonia species was also analyzed. Overall, 96,766 specimens were collected over five years of sampling. Mansonia titillans (Walker) was found to be the most abundant species (76.9%). The highest percentage of mosquitoes was collected in February (48.4%), followed by October (39.6%) and June (12.0%). The biting activity of the two most abundant species showed peak host seeking activity/behavior during twilight and night, more perceptible in the outdoor environment (peridomiciliary). In general, seasonality showed a tendency towards a reduction in the abundance of Mansonia in the years after 2015. Our results will be essential in the formulation of effective control methodology for Mansonia in the studied area.

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Seasonality and Biting Behavior ofMansonia(Diptera, Culicidae) in Rural Settlements Near Porto Velho, State of Rondônia, Brazil

Galardo

Hijjar²,

Falcão³

et al. 2022

Journal of Medical Entomology

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“…did not show a defined seasonal pattern throughout the year. In contrast, Ferreira et al (1999) observed that the largest number of immatures of Mansonia spp. were found in August-October), with a peak in August, which was not significantly correlated with abiotic factors.…”

Section: Discussionmentioning

confidence: 83%

“…In a study carried out by Ferreira (1999) on Marchantaria Island, in the municipality of Iranduba, Amazonas, the number of larvae and pupae found in E. crassipes was higher than in P. stratiotes. Ferreira et al (2003) similarly demonstrated a strong association between Mansonia larvae and the macrophytes E. crassipes and Ceratopteris sp.…”

Section: Discussionmentioning

confidence: 90%

“…There were 7 washing points for macrophytes, with 15 min spent on sampling per point, for a total of 105 min (1.45 h) per site. The same methodology was followed at all 10 sampling sites during a 14.5-h effort for each collection, totaling 420.5 h. Larval collections were carried out according to the methodology used by Ferreira (1999), where the locations were selected at random, following which they were removed manually and quantified, separated according to the species of the plant, and placed in a 25-liter white polypropylene tray (54 cm 3 33.5 cm 3 19 cm) to be washed with water. Subsequently, the water was filtered using a BioQuipt cone-shaped net to collect larvae detached from the roots.…”

Section: Sampling Pointsmentioning

confidence: 99%

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Evaluation of Mansonia spp. Infestation on Aquatic Plants in Lentic and Lotic Environments of the Madeira River Basin in Porto Velho, Rondônia, Brazil

Gil¹,

Mello²,

Silva³

et al. 2021

Journal of the American Mosquito Control Association

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The females of Mansonia are voraciously hematophagous. The spiracular apparatus of the immature, larval, and pupal forms is adapted to perforate submerged aquatic vegetation, from whose aeriferous aerenchyma they obtain the oxygen necessary for breathing. The proliferation of aquatic plants, in some cases linked to anthropic modifications that reduce water flow and/or increase organic matter content, may therefore contribute to the spread of these mosquitoes. This study aims to assess the presence of immature individuals of Mansonia in different aquatic plants of the Madeira River basin in 10 lentic and lotic environments and correlate their population density with abiotic factors such as water pH, dissolved O2, conductivity, and temperature. The sampling lasted from February 2016 to June 2018, a 29-month period during which 31,287 specimens belonging to the genus Mansonia were captured. Of the 12 species of macrophytes inspected, Eichhornia crassipes made up 70.1% of the samples. Lentic environments accounted for 58.9% of the samples and lotic environments for 41.1%. Immature individuals were most commonly found on Eichhornia crassipes, with this plant accounting for an average of 96.2% of all individuals, with a percentage ranging between 58.2% and 77.1% in different breeding areas. Only at the Foz do Igarapé Jirau site was a different distribution observed, with the number of aquatic plants more nearly equal: 83.3% of the larvae were found in Eichhornia crassipes, 9.2% in Ceratopteris pteridoides, 3.6% in E. azurea, 2.0% in Salvinia sp., and 1.9% in Pistia sp. The greatest richness was found in Iguapé do Raul. Concerning the larval/plant relationship, although less frequent, E. azurea had a higher larval density of Mansonia spp. It is important to emphasize that this finding may indicate a possible selection for this plant. Egg deposition by Mansonia spp. was more abundant in sample areas with Eichhornia crassipes and Pistia sp. The number of specimens collected was positively correlated with temperature, pH, and conductivity. These correlations showed a marked increase in the rainy season. Therefore, we were able to establish preliminary parameters of how environmental changes influence the ecology of this important genus of mosquitoes, the species of which are critical disease vectors.

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Aquatic Macrophytes Hosting Immature Mansonia (Mansonia) Blanchard, 1901 (Diptera, Culicidae) in Porto Velho, Rondonia State, Brazil

Amorim

Sá

Rojas

et al. 2022

Journal of Medical Entomology

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High abundance of hematophagous mosquitoes of the genus Mansonia Blanchard, 1901 (Diptera: Culicidae) threatens human and domestic animal health and well-being. Knowledge of the biology of nuisance mosquito species is necessary to understand specific ecological and biological factors to enable rapid and effective monitoring measures for sustainable control programs. The establishment and dispersion of Mansonia species are associated with the occurrence of aquatic macrophytes species, which are indispensable for the development of larvae and pupae. To increase knowledge of the host plants for Mansonia immature stages in Porto Velho, Rondonia State, Brazil, specimens of four plant species, which occur across the tributaries of the Madeira River were sampled and inspected for the presence of egg batches, larvae, and pupae. A total of 1,386 larvae and pupae of Mansonia spp. were collected attached to the roots of Eichhornia crassipes (Mart.) Solms (Commelinales: Pontederiaceae), Pistia stratiotes L. (Alismatales: Araceae), and Limnobium laevigatum (Humb. and Bonpl. Ex Willd.) Heine (Alismatales: Hydrocharitaceae). The novel association of Mansonia species with L. laevigatum is presented. Egg batches of Mansonia spp. were found only on Salvinia molesta D.S. Mitch. (Salviniales: Salviniaceae). Possible differences in the roles played by E. crassipes and S. molesta in the reproductive cycle of Mansonia spp. in the surveyed area are discussed. All species of host plants including E. crassipes, P. stratiotes, S. molesta, and L. laevigatum should be considered when planning macrophyte management for the control of Mansonia species.

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Densidade de oviposição, e quantificação de Larvas e Pupas de Mansonia Blanchard, 1901 (Diptera: Culicidae), em Eichhornia crassipes Solms. e Pistia stratiotes Linn. Na ilha da Marchantaria, Amazônia Central

Cited by 8 publications

References 1 publication

Seasonality and Biting Behavior ofMansonia(Diptera, Culicidae) in Rural Settlements Near Porto Velho, State of Rondônia, Brazil

Seasonality and Biting Behavior ofMansonia(Diptera, Culicidae) in Rural Settlements Near Porto Velho, State of Rondônia, Brazil

Evaluation of Mansonia spp. Infestation on Aquatic Plants in Lentic and Lotic Environments of the Madeira River Basin in Porto Velho, Rondônia, Brazil

Aquatic Macrophytes Hosting Immature Mansonia (Mansonia) Blanchard, 1901 (Diptera, Culicidae) in Porto Velho, Rondonia State, Brazil

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