Evidence map›Paper›PMID 30909928›Full record

ArticleMalaria journal2019

Species abundance, composition, and nocturnal activity of female Anopheles (Diptera: Culicidae) in malaria-endemic villages of Papua New Guinea: assessment with barrier screen sampling.

John B Keven, Michelle Katusele, Rebecca Vinit, Gussy Koimbu, Naomi Vincent, Edward K Thomsen, Stephan Karl, Lisa J Reimer, Edward D Walker

Abstract read
In one paragraph

Article in Malaria journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

John B KevenVector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea. jbkeven@gmail.com.
Michelle KatuseleVector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
Rebecca VinitVector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
Gussy KoimbuVector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
Naomi VincentVector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
Edward K ThomsenLiverpool School of Tropical Medicine, Liverpool, UK.
Stephan KarlVector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
Lisa J ReimerLiverpool School of Tropical Medicine, Liverpool, UK.
Edward D WalkerDepartment of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA.

Funding

Southeast Asia Malaria Research CenterU19AI089672 · NIAID · UNIVERSITY OF SOUTH FLORIDA · PI CUI, LIWANG · 2010 to 2023
$28.9M
TransmissionU19AI089686 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI ZIMMERMAN, PETER A. · 2010 to 2016
$9.9M
CASE-PNG Infectious Disease Research Training ProgramD43TW007377 · FIC · CASE WESTERN RESERVE UNIVERSITY · PI KAZURA, JAMES WALTER, ZIMMERMAN, PETER A. · 2005 to 2015
$2.0M
FIC NIH HHS D43 TW007377Fogarty International Center 2D43TW007377National Institute of Allergy and Infectious Diseases U19AI089686NIAID NIH HHS U19 AI089672NIAID NIH HHS U19 AI089686
6 · The paper itself

Abstract

backgroundCommunity composition of Anopheles mosquitoes, and their host-seeking and peridomestic behaviour, are important factors affecting malaria transmission. In this study, barrier screen sampling was used to investigate species composition, abundance, and nocturnal activity of Anopheles populations in villages of Papua New Guinea.

methodsMosquitoes were sampled from 6 pm to 6 am in five villages from 2012 to 2016. The barrier screens were positioned between the village houses and the perimeter of villages where cultivated and wild vegetation ("the bush") grew thickly. Female Anopheles that rested on either village or bush side of the barrier screens, as they commuted into and out of the villages, were captured. Similarity in species composition among villages was assessed. Mosquitoes captured on village and bush sides of the barrier screens were sorted by feeding status and by hour of collection, and their numbers were compared using negative binomial generalized linear models.

resultsFemales of seven Anopheles species were present in the sample. Species richness ranged from four to six species per village, but relative abundance was highly uneven within and between villages, and community composition was similar for two pairs of villages and highly dissimilar in a fifth. For most Anopheles populations, more unfed than blood-fed mosquitoes were collected from the barrier screens. More blood-fed mosquitoes were found on the side of the barrier screens facing the village and relatively more unfed ones on the bush side, suggesting commuting behaviour of unfed host-seeking females into the villages from nearby bush and commuting of blood-fed females away from villages towards the bush. For most populations, the majority of host-seeking mosquitoes arrived in the village before midnight when people were active and unprotected from the mosquitoes by bed nets.

conclusionThe uneven distribution of Anopheles species among villages, with each site dominated by different species, even among nearby villages, emphasizes the importance of vector heterogeneity in local malaria transmission and control. Yet, for most species, nocturnal activity patterns of village entry and host seeking predominantly occurred before midnight indicating common behaviours across species and populations relative to human risk of exposure to Anopheles bites.

Indexed as

BiodiversityAnimalsAnophelesCircadian RhythmFeeding BehaviorFemaleMosquito ControlMosquito VectorsPapua New GuineaPopulation DensityAnophelesBarrierBlood-fedBushMosquitoesScreenUnfedVillage

Identifiers

PMID30909928
PMCPMC6434780

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.