Evaluation of the Atr<i>aedes</i>™ Lure for Collection of<i>Culex quinquefasciatus</i>in Gravid Traps

Irish, S. R.; Batengana, Bernard; Eiras, Álvaro Eduardo; Cameron, M. M.

doi:10.2987/14-6420r.1

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…The nearly three-fold superiority of aspiration in collecting female Cx . quinquefasciatus may be surprising, given that many other sites preferentially use CDC light or gravid traps for this species [ 24 , 26 , 27 , 38 , 40 , 57 , 58 ]. However, much of the existing literature is based upon studies conducted in rural settings with different residential and sanitation infrastructure and low population density.…”

Section: Discussionmentioning

confidence: 99%

Development of an urban molecular xenomonitoring system for lymphatic filariasis in the Recife Metropolitan Region, Brazil

et al. 2018

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IntroductionMolecular xenomonitoring (MX)—pathogen detection in the mosquito rather than human—is a promising tool for lymphatic filariasis (LF) surveillance. In the Recife Metropolitan Region (RMR), the last LF focus in Brazil, Culex quinquefasciatus mosquitoes have been implicated in transmitting Wuchereria bancrofti parasites. This paper presents findings on the ideal mosquito collection method, mosquito dispersion, W. bancrofti infection in mosquitoes and W. bancrofti antigen in humans to aid MX development.MethodsExperiments occurred within two densely populated urban areas of Olinda, RMR, in July and August 2015. U.S. Centers for Disease Control and Prevention (CDC) light traps were compared to battery-powered aspirators as collection methods, and mosquito dispersion was measured by mosquito mark release recapture (MMRR). Female Cx. quinquefasciatus were tested by PCR for W. bancrofti infection, and study area residents were screened by rapid tests for W. bancrofti antigen.ResultsAspirators caught 2.6 times more total Cx. quinquefasciatus, including 38 times more blood-fed and 5 times more gravid stages, than CDC light traps. They also collected 123 times more Aedes aegypti. Of the 9,644 marked mosquitoes released, only ten (0.01%) were recaptured, nine of which were < 50m (34.8m median, 85.4m maximum) from the release point. Of 9,169 unmarked mosquitoes captured in the MMR, 38.3% were unfed, 48.8% blood-fed, 5.5% semi-gravid, and 7.3% gravid. PCR on 182 pools (1,556 mosquitoes) found no evidence of W. bancrofti infection in Cx. quinquefasciatus. Rapid tests on 110 of 111 eligible residents were all negative for W. bancrofti antigen.ConclusionsAspirators were more effective than CDC light traps at capturing Ae. aegypti and all but unfed stages of Cx. quinquefasciatus. Female Cx. quinquefasciatus traveled short (< 86m) distances in this urban area. Lack of evidence for W. bancrofti infection in mosquitoes and antigen in humans in these fine-scale studies does not indicate that LF transmission has ceased in the RMR. A MX surveillance system should consider vector-specific collection methods, mosquito dispersion, and spatial scale but also local context, environmental factors such as sanitation, and host factors such as infection prevalence and treatment history.

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Section: Discussionmentioning

confidence: 99%

Development of an urban molecular xenomonitoring system for lymphatic filariasis in the Recife Metropolitan Region, Brazil

et al. 2018

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“…Traps combined with attractants have been found to increase the collection of adult mosquitoes (Xue & Smith 2013;Irish et al 2015, Acevedo et al 2020. Our study showed that the CDC gravid trap baited with Southern oak leaf infusion and a BG lure collected more Ae.…”

Section: Discussionmentioning

confidence: 56%

Comparison of Modified CDC Gravid, BG-Bowl, and CDC Autocidal Gravid Ovitraps to Collect Gravid and Host-Seeking Aedes aegypti (Diptera: Culicidae) in Northeastern Florida

Xue¹,

Dilla²,

Bangonan³

2021

Florida Entomologist

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“…Although the Atr Aedes lure is easy to use and much more convenient than grass infusions, it did not attract gravid Culex quinquefasciatus in search of oviposition sites when tested in Tanzania [ 24 ], even though this species has been found in Atr Aedes -baited MosquiTRAPs in Brazil [ 25 ]. In that case, Cx.…”

Section: Discussionmentioning

confidence: 99%

Improving the delivery and efficiency of fungus-impregnated cloths for control of adult Aedes aegypti using a synthetic attractive lure

et al. 2018

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BackgroundEntomopathogenic fungi are highly promising agents for controlling Aedes aegypti mosquitoes. Deploying fungus-impregnated black cloths in PET traps efficiently reduced Ae. aegypti female survival rates under intra-domicile conditions. With the aim of further increasing the effectiveness of the traps, the addition of attractive lures to fungus-impregnated traps was evaluated.MethodsBlack cloths were suspended inside 2 l plastic bottles called “PET traps”. These traps were placed in rooms simulating human residences. The first experiments evaluated the attraction of mosquitoes to PET traps with black cloths covered in adhesive film with and without synthetic lures (AtrAedes™). Traps were left in the test rooms for either 24 or 48 h. The attractiveness of the lures over time was also evaluated. The efficiency of PET traps with fungus-impregnated black cloths associated with lures was compared to that of traps without lures.ResultsThe highest percentage of captured mosquitoes (31 and 66%) were observed in PET traps with black cloths covered in adhesive film + attractive lure maintained in test rooms for 24 h and 48 h, respectively. Black cloths covered in adhesive film captured 17 or 36% of the mosquitoes at 24 h and 48 h, respectively. The attractiveness of the lures fell gradually over time, capturing 37% after 5 days on the bench and 22% of the mosquitoes after 30 days exposure to ambient conditions. Associating attractive synthetic lures with black cloths impregnated with M. anisopliae placed in test rooms for 120 h reduced mean survival to 32%, whilst black cloths impregnated with M. anisopliae without lures resulted in a 48% survival rate. Using Beauveria bassiana in the traps resulted in a 52% reduction in mosquito survival, whilst combining Beauveria and AtrAedes resulted in a 36% survival rate. PET traps impregnated with fungus + AtrAedes resulted in similar reductions in survival when left in the rooms for 24, 48, 72 or 120 h.ConclusionsAtrAedes increased attractiveness of PET traps with black cloths under intra-domicile conditions and when associated with M. anisopliae or B. bassiana, significantly reduced Aedes survival. This strategy will reduce the number of PET traps necessary per household.Electronic supplementary materialThe online version of this article (10.1186/s13071-018-2871-z) contains supplementary material, which is available to authorized users.

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Evaluation of the Atraedes™ Lure for Collection ofCulex quinquefasciatusin Gravid Traps

Cited by 4 publications

References 6 publications

Development of an urban molecular xenomonitoring system for lymphatic filariasis in the Recife Metropolitan Region, Brazil

Development of an urban molecular xenomonitoring system for lymphatic filariasis in the Recife Metropolitan Region, Brazil

Comparison of Modified CDC Gravid, BG-Bowl, and CDC Autocidal Gravid Ovitraps to Collect Gravid and Host-Seeking Aedes aegypti (Diptera: Culicidae) in Northeastern Florida

Improving the delivery and efficiency of fungus-impregnated cloths for control of adult Aedes aegypti using a synthetic attractive lure

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