Relationships between traditional larval indices and meteorological factors with the adult density of Aedes albopictus captured by BG-mosquito trap

Wang, Jin-Na; Hou, Juan; Zhong, Jian-Yue; Cao, Guo-Ping; Yu, Zhang-You; Wu, Yuheng; Li, Tianqi; Liu, Qinmei; Gong, Zhenyu

doi:10.1371/journal.pone.0234555

Cited by 16 publications

(13 citation statements)

References 35 publications

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“…in publicly accessible locations. We determined whether the inspected containers had water and contained larvae to calculate a neighborhood level container index (% of water holding containers with larvae) [ 9 ]. For all water-filled containers, we estimated total water volume and temperature.…”

Section: Methodsmentioning

confidence: 99%

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Mosquito Vector Production across Socio-Economic Divides in Baton Rouge, Louisiana

Crespo

Harrison

Rogers

et al. 2021

IJERPH

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We investigated the role of socio-economic factors in the proliferation of mosquito vectors in two adjacent but socio-economically contrasting neighborhoods in Baton Rouge, LA, USA. We surveyed mosquito larvae habitat, mosquito larvae, and adult mosquitoes during the summer of 2020. We also evaluated the number of requests for mosquito abatement services in the years preceding the study for each area. While we did not find differences in terms of the most abundant species, Culex quinquefasicatus (F1,30 = 0.329, p = 0.57), we did find a higher abundance of mosquito habitats, particularly discarded tires, as well as larvae (z = 13.83, p < 0.001) and adults (F1,30 = 4.207, p = 0.049) of the species Aedes albopictus in the low-income neighborhood. In contrast, mosquito abatement requests were significantly higher in the high socio-economic neighborhood (z = −8.561, p < 0.001). This study shows how factors such as adjudicated properties, discarded tires and pest abatement requests can influence the abundance of mosquito vectors, disproportionately affecting low-income groups. This study also highlights how Aedes spp. may be better indicators than Culex spp. of socio-economic differences between nearby neighborhoods, due to their short flight range and habitat preferences, and this should be considered in future studies attempting to detect such disparities in the future.

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Section: Methodsmentioning

confidence: 99%

“…This limitation is important because Aedes species are the main vectors of some of the most prevalent mosquito-borne infections known to date [ 7 , 8 ], including Zika, dengue, chikungunya, and yellow fever. Understanding their dynamics is an important aspect of assessing mosquito risk [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Mosquito Vector Production across Socio-Economic Divides in Baton Rouge, Louisiana

Crespo

Harrison

Rogers

et al. 2021

IJERPH

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“…This effort was meant to capture the number of vases inspected during our search period and the actual availability of larvae habitat (i.e., water-filled vases) on each of the cemeteries. We calculated a container index value or the percentage (%) of water holding containers with larvae [ 20 ] for these sampling months ( Table 1 ). While our larvae sampling was destructive, we only limited our collection to one open and one closed canopy vase.…”

Section: Methodsmentioning

confidence: 99%

Habitat Segregation Patterns of Container Breeding Mosquitos: The Role of Urban Heat Islands, Vegetation Cover, and Income Disparity in Cemeteries of New Orleans

Crespo

Rogers

2021

IJERPH

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Aedes aegypti and Aedes albopictus are important pathogen-carrying vectors that broadly exhibit similar habitat suitability, but that differ at fine spatial scales in terms of competitive advantage and tolerance to urban driven environmental parameters. This study evaluated how spatial and temporal patterns drive the assemblages of these competing species in cemeteries of New Orleans, LA, applying indicators of climatic variability, vegetation, and heat that may drive habitat selection at multiple scales. We found that Ae. aegypti was well predicted by urban heat islands (UHI) at the cemetery scale and by canopy cover directly above the cemetery vase. As predicted, UHI positively correlate to Ae. aegypti, but contrary to predictions, Ae. aegypti, was more often found under the canopy of trees in high heat cemeteries. Ae. albopictus was most often found in low heat cemeteries, but this relationship was not statistically significant, and their overall abundances in the city were lower than Ae. aegypti. Culex quinquefasciatus, another important disease vector, was also an abundant mosquito species during the sampling year, but we found that it was temporally segregated from Aedes species, showing a negative association to the climatic variables of maximum and minimum temperature, and these factors positively correlated to its more direct competitor Ae. albopictus. These findings help us understand the mechanism by which these three important vectors segregate both spatially and temporally across the city. Our study found that UHI at the cemetery scale was highly predictive of Ae. aegypti and strongly correlated to income level, with low-income cemeteries having higher UHI levels. Therefore, the effect of excessive heat, and the proliferation of the highly competent mosquito vector, Ae. aegypti, may represent an unequal disease burden for low-income neighborhoods of New Orleans that should be explored further. Our study highlights the importance of considering socioeconomic aspects as indirectly shaping spatial segregation dynamics of urban mosquito species.

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“…To assess the relative significance of larval habitats, the Pupal index can be broken down into "useful", "nonessential", and "natural" containers or by particular habitat types such as tires, flower vases, drums, and clay pots [84,85]. This method may not be used for routine monitoring or in every Aedes aegypti population survey because of the practical challenges and labor-intensive efforts needed to achieve pupal counts, especially from large containers.…”

Section: Entomological Surveillancementioning

confidence: 99%

“…Instead, it can be saved for special studies or used twice in each locality, once during the wet season and once during the dry season, to identify the most productive containers. For practical purposes, the Pupal index has been the most widely used strategy [84,86]. The basis for making the greatest use of a few resources can be laid by identifying the classes of containers in the neighborhood that have the highest rates of adult emergence.…”

Section: Entomological Surveillancementioning

confidence: 99%

Dengue Virus Surveillance and Blood Safety: A One Health Perspective

Mulakoli¹,

Gachara²,

Ndombi³

et al. 2023

Infectious Diseases

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The provision of blood products to save a life is a noble undertaking for any organization tasked with the duty. In addition to saving millions of lives, blood products pose health risks associated with adverse events. Much has been done to mitigate these challenges, but emerging new infectious diseases pose a public health challenge to both the safety of blood and its availability. The dengue virus an arbovirus is one such virus that is endemic in tropical and subtropical countries. The data emerging from the published papers show that dengue could be a major threat to blood safety and availability in the future. To address these threats, a collaborative approach through one health system is the only avenue to provide a last solution. One health has been implemented as a strategy to mitigate zoonotic diseases and its results are very impressive. This piece of work is a fraction of our larger project that aims to address threats to the dengue virus and blood safety in Kenya and the rest of Africa. In conclusion, adopting one health in the fight against the dengue virus in blood safety will be the best approach to ensure a safer supply of blood products.

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Relationships between traditional larval indices and meteorological factors with the adult density of Aedes albopictus captured by BG-mosquito trap

Cited by 16 publications

References 35 publications

Mosquito Vector Production across Socio-Economic Divides in Baton Rouge, Louisiana

Mosquito Vector Production across Socio-Economic Divides in Baton Rouge, Louisiana

Habitat Segregation Patterns of Container Breeding Mosquitos: The Role of Urban Heat Islands, Vegetation Cover, and Income Disparity in Cemeteries of New Orleans

Dengue Virus Surveillance and Blood Safety: A One Health Perspective

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