Diel activity patterns of adult female mosquitoes (Diptera: Culicidae) determined by a novel rotated trap in northeastern Florida, U.S.A.

Chao, Shi; Zhu, Ding; Dixon, Daniel; Khater, Emad I.M.; Xue, Rui‐De

doi:10.1111/jvec.12339

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The active attack of horseflies on the feeder in the region lasts on average from 9 to 21 hours with a maximum of 12-16 hours. The leading factor determining the rhythm of the daily activity of horseflies is illumination, as only during daylight hours horseflies can navigate in flight and find prey [20][21][22][23][24]. Horseflies inhabit open biotopes -meadows, pastures, clearings, and forest edges.…”

Section: Resultsmentioning

confidence: 99%

Blood-Sucking Diptera Insects (Insecta: Diptera) in Tyumen Region: Species Composition and Features of Seasonal Population Dynamics

Khlyzova¹

2022

Entomol Appl Sci Lett

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The article presents the results of the study of the species composition of the fauna of the blood-sucking Diptera insects of the Tyumen region (Russian Federation). The studies were carried out from 2004 to 2022 in three subzones: forest with subzones of southern taiga and aspen-birch forests and forest-steppe. It was discovered that the fauna is represented by 109 species and 4 subspecies: horseflies -35 species and 4 subspecies, mosquitoes -41 species, blackflies -16 species, biting midges -17 species. The total summer period of insects in this group is 140-170 days. Depending on the meteorological conditions of the springsummer season, the start and end dates of summer may shift by 1-2 decades. The activity of horseflies and blackflies is observed during the daytime, and mosquitoes and biting midges are twilight insects and attack mainly in the morning and evening hours. The main abiotic factors determining the nature of the diurnal rhythm of activity of Diptera insects are air temperature and illumination.

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Section: Resultsmentioning

confidence: 99%

Blood-Sucking Diptera Insects (Insecta: Diptera) in Tyumen Region: Species Composition and Features of Seasonal Population Dynamics

Khlyzova¹

2022

Entomol Appl Sci Lett

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“…2 Comparison of hourly trap catches from indoor and outdoor locations up in the evening and left to run uninterrupted the whole night and therefore are unable to account for the specific hours at which mosquitoes were trapped as an indicator of host-seeking behaviour [12,56,65,66]. Rotator light traps have been used to assess diel mosquito activity in studies of Aedes mosquitoes [67][68][69] and less frequently to monitor Anopheles activity [41,61,70]. In this study, CDC-LT and UV-LT bags were collected every hour through the night.…”

Section: Discussionmentioning

confidence: 99%

Comparison of different trapping methods to collect malaria vectors indoors and outdoors in western Kenya

Kosgei,

Gimnig,

Moshi

et al. 2024

Malar J

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Background Vector surveillance is among the World Health Organization global vector control response (2017–2030) pillars. Human landing catches are a gold standard but difficult to implement and potentially expose collectors to malaria infection. Other methods like light traps, pyrethrum spray catches and aspiration are less expensive and less risky to collectors. Methods Three mosquito sampling methods (UV light traps, CDC light traps and Prokopack aspiration) were evaluated against human landing catches (HLC) in two villages of Rarieda sub-county, Siaya County, Kenya. UV-LTs, CDC-LTs and HLCs were conducted hourly between 17:00 and 07:00. Aspiration was done indoors and outdoors between 07:00 and 11:00 a.m. Analyses of mosquito densities, species abundance and sporozoite infectivity were performed across all sampling methods. Species identification PCR and ELISAs were done for Anopheles gambiae and Anopheles funestus complexes and data analysis was done in R. Results Anopheles mosquitoes sampled from 608 trapping efforts were 5,370 constituting 70.3% Anopheles funestus sensu lato (s.l.), 19.7% Anopheles coustani and 7.2% An. gambiae s.l. 93.8% of An. funestus s.l. were An. funestus sensu stricto (s.s.) and 97.8% of An. gambiae s.l. were Anopheles arabiensis. Only An. funestus were sporozoite positive with 3.1% infection prevalence. Indoors, aspiration captured higher An. funestus (mean = 6.74; RR = 8.83, P < 0.001) then UV-LT (mean = 3.70; RR = 3.97, P < 0.001) and CDC-LT (mean = 1.74; RR = 1.89, P = 0.03) compared to HLC. UV-LT and CDC-LT indoors captured averagely 0.18 An. arabiensis RR = 5.75, P = 0.028 and RR = 5.87, P = 0.028 respectively. Outdoors, UV-LT collected significantly higher Anopheles mosquitoes compared to HLC (An. funestus: RR = 5.18, P < 0.001; An. arabiensis: RR = 15.64, P = 0.009; An. coustani: RR = 11.65, P < 0.001). Anopheles funestus hourly biting indoors in UV-LT and CDC-LT indicated different peaks compared to HLC. Conclusions Anopheles funestus remains the predominant mosquito species. More mosquitoes were collected using aspiration, CDC-LTs and UV-LTs indoors and UV-LTs and CD-LTs outdoors compared to HLCs. UV-LTs collected more mosquitoes than CDC-LTs. The varied trends observed at different times of the night suggest that these methods collect mosquitoes with diverse activities and care must be taken when interpreting the results.

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“…These traps are usually set up in the evening and left to run uninterrupted the whole night and therefore are unable to account for the speci c hours at which mosquitoes were trapped as an indicator of host seeking behaviour [9,44,51,52]. Rotator light traps have been used to assess diel mosquito activity in studies of Aedes mosquitoes [53][54][55] and less frequently to monitor Anopheles activity [47,56,57]. In this study, CDC-LT and UV-LT bags were collected every hour through the night.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Different Trapping Methods to Collect Malaria Vectors Indoors and Outdoors in Western Kenya

Kosgei,

Gimnig,

Moshi

et al. 2023

Preprint

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Background Enhanced vector surveillance, is one of the 4 pillars of the WHO’s global vector control response (2017–2030). Human landing catches are the gold standard for entomological surveys but are difficult to implement and expose collectors to mosquito bites and potentially to malaria infection. Other surveillance tools such as light traps, pyrethrum spray catches and aspiration are less expensive and do not expose collectors to potentially infectious mosquitoes, but they are difficult to implement outdoors and/or to assess duration of collection/standardize collection effort. This study evaluated four mosquito trapping methods that may be cheaper, easier, and less risky to implement compared to human landing catch. Methods Three mosquito sampling methods (UV light traps, CDC light traps and Prokopack aspiration) were evaluated against human landing catches in two villages of Rarieda sub-county, in Siaya County, western Kenya. UV light traps, CDC light traps and human landing catches were conducted in three locations: inside houses, 10 meters from the house and 10 meters from the compound boundary. These were done every hour from 17:00 until 07:00. Prokopack aspiration was done indoors and outdoors of houses adjacent to the light trap and HLC houses from 07:00 until 11:00. Analyses of mosquito densities, species abundance and sporozoite infection prevalence were performed across all sampling methods. Species within the An. gambiae and An. funestus species complexes were identified using PCR. ELISAs were used to determine mosquito sporozoite infection prevalence. Data analysis was done in R statistical software. Results A total of 5,370 male and female Anopheles mosquitoes were sampled from 608 trapping efforts. An. funestus constituted 70.3% (n = 3,877) of the sampled Anopheles mosquitoes while An. coustani was 19.7% and An. gambiae s.l. was much lower at 7.2%. 93.8% of An. funestus s.l. samples processed through PCR were An. funestus s.s. and 97.8% of An. gambiae s.l. were confirmed to be An. arabiensis. Only An. funestus samples were positive for sporozoites, with a species specific sporozoite infection prevalence of 3.1%. Indoor aspiration captured the highest number of An. funestus (mean = 6.74; RR = 7.49 compared to indoor HLC, 95% CI 3.95–14.22, P < 0.001) followed by indoor UV-LT, (mean = 3.7; RR = 3.6, 95% CI 2.02–6.42, P < 0.001) and indoor CDC-LT (mean = 1.74; RR = 1.85, 95% CI 1.02–3.33, P = 0.042). In pairwise comparisons, significantly different numbers of An. funestus were collected by all indoor methods with the most collected by aspiration and the fewest by HLC. For An. arabiensis, indoor UV-LT and indoor CDC-LT each captured an average of 0.18 per trap-night which were significantly higher than HLC indoors. Outdoors, UV-LT collected significantly higher numbers of Anopheles mosquitoes across all species analyzed (An. funestus: mean = 1.69, RR = 4.27 compared to outdoor HLC, 95% CI 2.20–8.31, P < 0.001; An. arabiensis: mean = 0.22, RR = 15.64, 95% CI 1.97-124.36, P = 0.009; An. coustani: mean = 3.74, RR = 10.48, 95% CI 4.37–25.14, P < 0.001) when compared to outdoor HLC. Hourly biting in UV-LT and CDC-LT indicated different peaks compared to HLC for An. funestus collected indoors. Conclusions Anopheles funestus remains the predominant malaria vector in the region and was primarily caught indoors. Anopheles arabiensis were trapped in similar both indoors and outdoors while and An. coustani were mostly collected outdoors with UV-LTs. UV-LT and CDC-LT collected higher numbers of the primary Anopheles mosquitoes indoors and outdoors except for An. funestus indoors where aspiration was the most efficient method. The UV-LT generally collected more mosquitoes than the CDC-LT indicating UV-LTs may be an efficient tool for monitoring populations of Anopheles mosquitoes. Differences in hourly biting by different collection methods indicate the need to further investigate the behaviour of An. funestus.

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Diel activity patterns of adult female mosquitoes (Diptera: Culicidae) determined by a novel rotated trap in northeastern Florida, U.S.A.

Cited by 5 publications

References 14 publications

Blood-Sucking Diptera Insects (Insecta: Diptera) in Tyumen Region: Species Composition and Features of Seasonal Population Dynamics

Blood-Sucking Diptera Insects (Insecta: Diptera) in Tyumen Region: Species Composition and Features of Seasonal Population Dynamics

Comparison of different trapping methods to collect malaria vectors indoors and outdoors in western Kenya

Comparison of Different Trapping Methods to Collect Malaria Vectors Indoors and Outdoors in Western Kenya

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