scholarly journals Culex pipiens quinquefasciatus: a potential vector to transmit Zika virus

2016 ◽  
Vol 5 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Xiao-xia Guo ◽  
Chun-xiao Li ◽  
Yong-qiang Deng ◽  
Dan Xing ◽  
Qin-mei Liu ◽  
...  
Keyword(s):  
Zika Virus ◽  
Culex Pipiens ◽  
Potential Vector ◽  
Culex Pipiens Quinquefasciatus

scholarly journals Global spatial assessment of Aedes aegypti and Culex quinquefasciatus: a scenario of Zika virus exposure

2018 ◽  
Vol 147 ◽  
Author(s):  
Alberto J. Alaniz ◽  
Mario A. Carvajal ◽  
Antonella Bacigalupo ◽  
Pedro E. Cattan
Keyword(s):  
Aedes Aegypti ◽  
Culex Quinquefasciatus ◽  
Zika Virus ◽  
Mosquito Control ◽  
Health Planning ◽  
Risk Level ◽  
Spatially Explicit ◽  
World Population ◽  
Potential Vector ◽  
Risk Zones

AbstractZika virus (ZIKV) is an arbovirus transmitted mainly by Aedes aegypti mosquitoes. Recent scientific evidence on Culex quinquefasciatus has suggested its potential as a vector for ZIKV, which may change the current risk zones. We aimed to quantify the world population potentially exposed to ZIKV in a spatially explicit way, considering the primary vector (A. aegypti) and the potential vector (C. quinquefasciatus). Our model combined species distribution modelling of mosquito species with spatially explicit human population data to estimate ZIKV exposure risk. We estimated the potential global distribution of C. quinquefasciatus and estimated its potential interaction zones with A. aegypti. Then we evaluated the risk zones for ZIKV considering both vectors. Finally, we quantified and compared the people under risk associated with each vector by risk level, country and continent. We found that C. quinquefasciatus had a more temperate distribution until 42° in both hemispheres, while the risk involving A. aegypti is concentrated mainly in tropical latitudes until 35° in both hemispheres. Globally, 4.2 billion people are under risk associated with ZIKV. Around 2.6 billon people are under very high risk associated with C. quinquefasciatus and 1 billion people associated with A. aegypti. Several countries could be exposed to ZIKV, which emphasises the need to clarify the competence of C. quinquefasciatus as a potential vector as soon as possible. The models presented here represent a tool for risk management, public health planning, mosquito control and preventive actions, especially to focus efforts on the most affected areas.

scholarly journals Screening of Chemosterilants against the Southern House Mosquito Culex pipiens quinquefasciatus

1970 ◽  
Vol 53 (4) ◽  
pp. 215 ◽  
Author(s):  
M. D. Boston ◽  
R. S. Patterson ◽  
C. S. Lofgren
Keyword(s):  
Culex Pipiens ◽  
Culex Pipiens Quinquefasciatus

scholarly journals Effects of Propoxur Exposure on Insecticidal Susceptibility and Developmental Traits in Culex pipiens quinquefasciatus

Insects ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 288
Author(s):  
Xiaolei Zhang ◽  
Samuel Karungu ◽  
Quanxin Cai ◽  
Zhiming Yuan ◽  
Xiaomin Hu
Keyword(s):  
Culex Pipiens ◽  
Constitutive Expression ◽  
Adult Survivors ◽  
Lethal Concentration ◽  
P450 Monooxygenase ◽  
Resistance Development ◽  
Culex Pipiens Quinquefasciatus ◽  
Rate Of Increase ◽  
Developmental Traits ◽  
Net Reproduction

Propoxur-sel strains of Culex pipiens quinquefasciatus were derived from a lab-bred strain following 16 generations of propoxur exposure under sublethal concentrations of LC25 (lethal concentration of 25%) and LC50 (lethal concentration of 50%), respectively. This resulted in resistance development in F16 with ratios of 8.8× and 6.3×, respectively, compared with F0. The fecundity, longevity, sex ratio (F/M), and hatchability of the propoxur-exposed Cx. quinquefasciatus adult survivors and their offspring were decreased, with no effect on the emergence ratio and pupa survival rate. In addition, the intrinsic rates of increase (r), the net reproduction (R0), and the finite rate of increase (λ) of the Cx. quinquefasciatus offspring generations were also decreased significantly compared to F0. Correspondingly, the mean generation time (T) and the population double time (DT) in propoxur-sels were increased. Enhanced activities of cytochrome P450 monooxygenase and esterase were also observed in propoxur-sels, indicating that a detoxification mechanism might be responsible for resistance development in Cx. quinquefasciatus. Except for the three genes cyp4d42v1, cyp4c52v1, and cyp6aa9 which displayed a coincidence in some degree in different treatments, induction by different doses of propoxur and constitutive expression in different generations of propoxur-sel strains resulted in an inconsistent identification of the P450 genes probably related with resistance.

Chemotaxis of Culex Pipiens Quinquefasciatus Larvae (Diptera: Culicidae) in Response to Amino Acids

1983 ◽  
Vol 20 (6) ◽  
pp. 641-643 ◽  
Author(s):  
John T. Barber ◽  
Erik G. Ellgaard ◽  
Burton C. Plaster
Keyword(s):  
Amino Acids ◽  
Culex Pipiens ◽  
Culex Pipiens Quinquefasciatus
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