Impact of livestock on a mosquito community (Diptera: Culicidae) in a Brazilian tropical dry forest

Santos, Cleandson Ferreira; Borges, Magno Augusto Zazá

doi:10.1590/0037-8682-0022-2015

Cited by 8 publications

(8 citation statements)

References 12 publications

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“…These findings are consistent with the reports of previous studies (Chandler et al, 1975(Chandler et al, , 1976Gad et al, 1999;Seyoum et al, 2002;Tchouassi et al, 2016). Availability and defensive behaviors of host, nutritional value of the blood meal and the energy cost of digestion of the blood have been identified as the determinant factors that influence the host preferences (Lyimo and Ferguson, 2009;Santos and Borges, 2015).…”

Section: Discussionsupporting

confidence: 92%

“…Larger body size, relatively less defensive behavior, physiological factors of cattle blood and the host derived signals such as olfactory signals may be the possible causes for the higher attraction of mosquito towards them (Clement, 1999;Zwiebel and Takken, 2004). Also, the cattle release relatively larger amount of carbon dioxide (Santos and Borges, 2015) which could act as a long distance attractant for the mosquitoes.…”

Section: Discussionmentioning

confidence: 99%

“…Increased risk of introducing new pathogens to human populations through mosquito species with generalized feeding patterns has become a crucial factor in controlling zoonotic diseases. Animal domestication and livestock farming have given ample opportunities for these mosquitoes to go for a number of host species to obtain successful blood meals and increasing their foraging efficiency (Santos and Borges, 2015). Different domestic animals live in the same environment provide a dynamic environment for diverse mosquito species that contributes to inter and intra species transmission of pathogens.…”

Section: Introductionmentioning

confidence: 99%

“…Changing the vegetation and the natural environmental conditions by establishing livestock stations introduces new mosquito breeding sites. Such habitat changes subsequently increase the vector population and the risk of disease transmission leading to many epidemics (Lehane, 2005;Santos and Borges, 2015). The livestock have, thus, indirectly shaped up the evolution of generalized feeding behavior of mosquitoes that live in human settlements.…”

Section: Introductionmentioning

confidence: 99%

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Species composition of mosquitoes associated with a livestock field station

2019

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Blood feeding nature of mosquitoes associated with livestock field stations are crucial in understanding the vectorborne disease dynamics. We investigated the species composition, abundance and blood feeding pattern of mosquitoes at a livestock field station in Uda Peradeniya, Sri Lanka. Monthly samplings were done from six animal units (cattle, swine, duck, sheep, rabbit, and goat) from December 2016 to July 2017 using hand held aspirators, UV light traps and CDC miniature light traps. Blood sources of the mosquitoes were confirmed by PCR assays. Majority of the mosquitoes (82.3 %) were belonged to the Genus Culex followed by Armigeres (7.31%), Aedes (6.70%) and Anopheles (3.65%). Culex fuscocephala (26.82%) was the most abundant species while Aedes albopictus (0.30%) and Anopheles aitkenii (0.30%) were the least. The highest mosquito abundance was reported from cattle unit (86.9%) followed by swine (12.2 %) and duck (0.91 %) units. The highest mosquito abundance and diversity were reported in December (35.97%). No association were reported between climatic variables and mosquito abundance (p>0.05). Mixed blood meals were not reported and mosquitoes of cattle and swine units were identified with 100% cattle and swine blood, respectively. The generalized feeding pattern of the identified mosquitoes suggests the potential vector status of infectious diseases.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Species composition of mosquitoes associated with a livestock field station

2019

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“…Three points with a minimum distance of 100 m from each other were selected within each habitat. At each point, mosquitoes were collected once a month using a Shannon trap (see Santos & Borges, 2015), totalizing three traps per habitat per month. Each trap was installed at the ground level at the beginning of sunset and remained in the field for two hours.…”

Section: Methodsmentioning

confidence: 99%

Mosquito (Diptera: Culicidae) diversity along a rainy season and edge effects in a riparian forest in Southeastern Brazil

et al. 2022

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Knowledge on the distribution of mosquito communities over time and across human‐modified landscapes is important in determining the risk for vector‐borne disease. The diversity of mosquitoes along a rainy season and edge effects were evaluated in a riparian forest in the Cerrado biome, Southeastern Brazil. Mosquito communities were sampled with Shannon traps in three distinct habitats (forest interior, forest edge and pasture) throughout an entire rainy season, comprising five sampling months (December 2015 to April 2016). A total of 13 549 mosquitoes belonging to 54 species were sampled. Mosquito species richness and abundance were greater in February, which coincided with the middle of the rainy season and just after the months with greater rainfall. Mosquito species richness did not differ among habitats for any particular month. In February, month when 74% of individuals were recorded, mosquito abundance was lower in the pasture compared with the forest edge and interior, which did not differ statistically from each other. Four of the six most abundant mosquito species (which account for 93.5% of the sampled individuals) had more individuals collected in the forest edge, and 28 species were more abundant at the edge compared with 15 species in the forest interior. Months with high rainfall probably allowed the availability and maintenance of high‐water level in breeding sites leading to a further increase in mosquito populations. While the pasture did not seem to have the ideal abiotic conditions and/or resources (e.g. food and breeding sites) for mosquito species, edge effects appear to favour mosquito populations. Therefore, the risk of mosquito‐borne diseases is expected to be greater in the middle of the rain season at the riparian forest‐pasture edge, when and where a greater number of disease‐vectoring species are present.

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Mosquito and primate ecology predict human risk of yellow fever virus spillover in Brazil

Childs

Nova

Colvin

et al. 2019

Phil. Trans. R. Soc. B

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Many (re)emerging infectious diseases in humans arise from pathogen spillover from wildlife or livestock, and accurately predicting pathogen spillover is an important public health goal. In the Americas, yellow fever in humans primarily occurs following spillover from non-human primates via mosquitoes. Predicting yellow fever spillover can improve public health responses through vector control and mass vaccination. Here, we develop and test a mechanistic model of pathogen spillover to predict human risk for yellow fever in Brazil. This environmental risk model, based on the ecology of mosquito vectors and non-human primate hosts, distinguished municipality-months with yellow fever spillover from 2001 to 2016 with high accuracy (AUC = 0.72). Incorporating hypothesized cyclical dynamics of infected primates improved accuracy (AUC = 0.79). Using boosted regression trees to identify gaps in the mechanistic model, we found that important predictors include current and one-month lagged environmental risk, vaccine coverage, population density, temperature and precipitation. More broadly, we show that for a widespread human viral pathogen, the ecological interactions between environment, vectors, reservoir hosts and humans can predict spillover with surprising accuracy, suggesting the potential to improve preventive action to reduce yellow fever spillover and avert onward epidemics in humans. This article is part of the theme issue ‘Dynamic and integrative approaches to understanding pathogen spillover’.

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Impact of livestock on a mosquito community (Diptera: Culicidae) in a Brazilian tropical dry forest

Cited by 8 publications

References 12 publications

Species composition of mosquitoes associated with a livestock field station

Species composition of mosquitoes associated with a livestock field station

Mosquito (Diptera: Culicidae) diversity along a rainy season and edge effects in a riparian forest in Southeastern Brazil

Mosquito and primate ecology predict human risk of yellow fever virus spillover in Brazil

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