Abstract:
:Assessing the biting behaviour of malaria vectors plays an integral role in understanding the dynamics of malaria transmission in a region. Biting times and preference for biting indoors or outdoors varies among mosquito species and across regions. These behaviours may also change over time in response to vector control measures such as long-lasting insecticidal nets (LLINs). Data on these parameters can provide the sites and times at which different interventions would be effective for vector control. This study assessed the biting patterns of malaria vectors in Chikwawa district, southern Malawi. The study was conducted during the dry and wet seasons in 2016 and 2017, respectively. In each season, mosquitoes were collected indoors and outdoors for 24 nights in six houses per night using the human landing catch. Volunteers were organized into six teams of two individuals, whereby three teams collected mosquitoes indoors and the other three collected mosquitoes outdoors each night, and the teams were rotated among twelve houses. All data were analyzed using Poisson log-linear models. The most abundant species were Anopheles gambiae sensu lato (primarily An. arabiensis) and An. funestus s.l. (exclusively An. funestus s.s.). During the dry season, the biting activity of An. gambiaes.l. was constant outdoors across the categorized hours (18:00 h to 08:45 h), but highest in the late evening hours (21:00 h to 23:45 h) during the wet season. The biting activity of An. funestus s.l. was highest in the late evening hours (21:00 h to 23:45 h) during the dry season and in the late night hours (03:00 h to 05:45 h) during the wet season. Whereas the number of An. funestuss.l. biting was constant (P = 0.662) in both seasons, that of An. gambiaes.l. was higher during the wet season than in the dry season (P = 0.001). Anopheles gambiae s.l. was more likely to bite outdoors than indoors in both seasons. During the wet season, An. funestus s.l. was more likely to bite indoors than outdoors but during the dry season, the bites were similar both indoors and outdoors. The biting activity that occurred in the early and late evening hours, both indoors and outdoors coincides with the times at which individuals may still be awake and physically active, and therefore unprotected by LLINs. Additionally, a substantial number of anopheline bites occurred outdoors. These findings imply that LLINs would only provide partial protection from malaria vectors, which would affect malaria transmission in this area. Therefore, protection against bites by malaria mosquitoes in the early and late evening hours is essential and can be achieved by designing interventions that reduce vector-host contacts during this period.
journal_name
Acta Tropjournal_title
Acta tropicaauthors
Mburu MM,Mzilahowa T,Amoah B,Chifundo D,Phiri KS,van den Berg H,Takken W,McCann RSdoi
10.1016/j.actatropica.2019.105059subject
Has Abstractpub_date
2019-09-01 00:00:00pages
105059eissn
0001-706Xissn
1873-6254pii
S0001-706X(19)30258-Xjournal_volume
197pub_type
杂志文章相关文献
ACTA TROPICA文献大全abstract::Leishmaniasis is a protozoan infectious disease widely distributed all around the world. First line drugs including antimoniales are insufficient due to resistance in endemic areas and high toxicity. Azole antifungals like ketoconazole (KCZ) are also used as antileishmanial agents for several decades. In the present s...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2016.12.027
更新日期:2017-03-01 00:00:00
abstract::Two high-throughput assays for the identification of members of the Anopheles gambiae sensu lato species complex have recently been reported. These methods, are based on TaqMan single nucleotide polymorphism (SNP) genotyping that enables rapid scoring of mosquito DNA samples in real-time PCR reactions. Unfortunately, ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2008.04.009
更新日期:2008-07-01 00:00:00
abstract::A survey of 100 rural households in a village in the Chaco region of Bolivia revealed a serious problem of Taenia solium cysticercosis, with a seroprevalence of 99/447 (22%) in humans and 102/273 (37%) in pigs. Risk factors for humans were being in older age groups, absence of sanitary facilities, poor formal educatio...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/s0001-706x(01)00161-9
更新日期:2001-12-21 00:00:00
abstract::House is the major site for malaria infection where most human-vector contact takes place. Hence, improving housing might reduce the risk of malaria infection by limiting house entry of vectors. This study aimed to explore the impact of screening doors and windows with wire meshes on density and entomological inoculat...
journal_title:Acta tropica
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.actatropica.2018.02.009
更新日期:2018-05-01 00:00:00
abstract::The Japanese Encephalitis (JE) virus circulation in Indonesia was first documented in Lombok in 1960, and the virus was first isolated in 1972 from Culex tritaeniorhynchus in Bekasi, West Java and Kapuk, West Jakarta. Since then, Indonesia has been recognized as an endemic country for JE transmission. Up to now, JE ca...
journal_title:Acta tropica
pub_type: 杂志文章,评审
doi:10.1016/j.actatropica.2018.08.017
更新日期:2018-11-01 00:00:00
abstract::Litomosoides carinii microfilariae were exsheathed by freezing and thawing, and the sheaths were separated by filtration. Samples of pure sheaths thus obtained were hydrolyzed, methanolyzed or oxidized with nitric acid under pressure at 300 degrees C, respectively, and were analyzed for amino acids, sugars, fatty acid...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/0001-706x(92)90080-h
更新日期:1992-02-01 00:00:00
abstract::Malaria is second only to tuberculosis as the leading cause of morbidity and mortality as a consequence of a single infectious agent. Much of the pathology of malaria arises from the inappropriate or excessive immune response mounted by the host in an attempt to eliminate the parasite. We here report the inflammatory ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2011.04.020
更新日期:2011-10-01 00:00:00
abstract::Schistosomiasis of the lower female reproductive tract manifests itself in a broad spectrum of clinical features. However, clinical and histopathological findings have never been studied in a synoptic manner. Based on the assumption that any type of pathology present in the female reproductive tract is the expression ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/s0001-706x(96)00027-7
更新日期:1996-12-30 00:00:00
abstract::Leptospirosis, a disease that occurs worldwide, especially in tropical regions, is caused by bacteria of the genus Leptospira and affects mammals, amphibians, and reptiles. Boa constrictor snakes are commonly found in Atlantic rainforest fragments in peri‑urban areas, which indicates a greater possibility of the conta...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2020.105572
更新日期:2020-09-01 00:00:00
abstract::The preference of Triatoma infestans for shelters at different temperatures or relative humidities (RH) was tested in laboratory assays. The insects preferred refuges at a temperature of 34 degrees C rather than 26 degrees C, and chose to stay in refuges with an RH of 20% rather than 80%. Temperature and RH records ma...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/s0001-706x(98)00094-1
更新日期:1999-04-30 00:00:00
abstract::The semiargenteus-subgroup of the Tabanus bovinus species group is reviewed. The known distribution area of the three previously known species could be significantly increased. T. semiargenteus Olsufjev, 1937 was for the first time recorded from Syria and Iran, T. olsufjevi Hauser, 1960 from Iraq and Iran and T. sarba...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2014.04.027
更新日期:2014-09-01 00:00:00
abstract::Several DNA probes were designed for use in real-time polymerase chain reaction (PCR) assays to target sequence variation within the ribosomal intergenic spacer (IGS) of schistosomes. A sub-section of the IGS (∼300bp) was amplified, with cross-specific primers, after which group-specific fluorescent, locked nucleic ac...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2011.10.019
更新日期:2013-11-01 00:00:00
abstract::An adaptation of a modified procedure using anion-exchange centrifugation was evaluated to isolate and freeze in field conditions a high number of bloodstream forms of Trypanosoma brucei gambiense for direct in vitro culture. Pellets of trypanosomes were obtained from 62 patients in Central Africa. The presence of try...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2003.10.017
更新日期:2004-04-01 00:00:00
abstract::Immune sera obtained from either BALB/c mice (susceptible) at 7 weeks, or C57BL/6 mice (resistant), at 7 weeks after infection with L. m. amazonensis, were effective in increasing internalization of homologous promastigotes into starch-induced peritoneal macrophages (from both mouse strains). Both the internalization ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:
更新日期:1987-09-01 00:00:00
abstract::A schistosomiasis control project was undertaken from 1994 to 1998 in Guruve District, Zimbabwe, based on the active involvement of local communities in the growing and application of the molluscicidal plant Phytolacca dodecandra as a supplement to other control measures such as chemotherapy and health education. The ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/s0001-706x(02)00256-5
更新日期:2003-03-01 00:00:00
abstract::A high performance liquid chromatographic (HPLC) method for the determination of the antitheilerial drugs parvaquone and buparvaquone in plasma was developed. Both compounds were extracted from plasma with ether. After evaporating the extracts to dryness the residue was dissolved in methanol and an aliquot was injecte...
journal_title:Acta tropica
pub_type: 杂志文章
doi:
更新日期:1988-03-01 00:00:00
abstract::Essential oils (EOs) are potential tools for controlling Musca domestica L. In a fumigant assay, M. domestica adults treated with Citrus sinensis EO (LC50=3.9mg/dm(3)), with (4R)(+)-limonene (95.1%) being its main component, died within 15min or less. The terpenes absorbed by the flies and their metabolites, analyzed ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2013.03.009
更新日期:2013-07-01 00:00:00
abstract::This study aimed to investigate the prevalence of cercarial infections in freshwater snails collected from the Chai Nat province of Central Thailand. Moreover, we aimed to develop a duplex PCR technique, using the ITS2 and candidate MT-ND1 gene, to determine the dissemination of H. taichui and H. pumilio, respectively...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2020.105795
更新日期:2020-12-10 00:00:00
abstract::Antibodies to the Pfs2400 gametocyte antigen have been shown to inhibit the development of Plasmodium falciparum in anophelines and therefore this antigen is a candidate for a transmission-blocking vaccine. To test seasonal variation of these antibodies under field conditions, sera from 72 individuals were collected t...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/s0001-706x(96)00620-1
更新日期:1997-02-01 00:00:00
abstract::Palms are ubiquitous across Neotropical landscapes, from pristine forests or savannahs to large cities. Although palms provide useful ecosystem services, they also offer suitable habitat for triatomines and for Trypanosoma cruzi mammalian hosts. Wild triatomines often invade houses by flying from nearby palms, potenti...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2015.07.005
更新日期:2015-11-01 00:00:00
abstract::Using immunoassay and immunoblotting approaches, antibodies to Sj26, a glutathione S-transferase molecule (Mr = 26,000) of Schistosoma japonicum worms that is a vaccine candidate, have been sought in three large human serum banks. For these studies, a near-native recombinant Sj26 molecule produced in Escherichia coli ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/0001-706x(89)90023-5
更新日期:1989-07-01 00:00:00
abstract::Microorganisms harbored by Chilean autochthonous ticks have been scarcely studied and current knowledge is restricted to three species of hard ticks only. The current study aimed to assess the presence of Anaplasmataceae, Borrelia and Hepatozoon agents in ticks collected directly from the environment, on reptiles, bir...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2019.02.002
更新日期:2019-04-01 00:00:00
abstract::Glanders is an infectious and contagious bacterial disease of equines. A little is known about its seroprevalence and risk factors in working equines in countries where the disease is endemic. Also, there are no reports on prevalence of the disease in areas where there is a prior evidence of Burkholderia (B.) mallei d...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2017.07.031
更新日期:2017-12-01 00:00:00
abstract::It has been observed that Triatoma infestans and Rhodnius prolixus females stridulate to reject copulatory attempts performed by males. In addition, triatomines stridulate when disturbed or handled. In the present study, the temporal structure and frequency spectra of vibrational signals produced by mechanically distu...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/s0001-706x(01)00095-x
更新日期:2001-05-25 00:00:00
abstract::First stage nymphs of Triatoma infestans and Dipetalogaster maximus which had never fed after egg hatching, were allowed to ingest by artificial feeding a blood-free suspension of Trypanosoma cruzi trypomastigotes collected from experimentally infected mice. A high percentage of the vectors acquired a normal infection...
journal_title:Acta tropica
pub_type: 杂志文章
doi:
更新日期:1978-12-01 00:00:00
abstract::Piperazine (diethylenediamine) is an anthelmintic widely used against animal and bird ascariasis. In this study, we show that treatment with piperazine blocks Ascaris suum larval moulting and development processes and affects larval proteome expression profiles. A. suum lung-stage L3 (LL3) obtained from an infected ra...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2006.08.007
更新日期:2006-10-01 00:00:00
abstract::The biological control of schistosomiasis has already proven its efficiency in several habitats in the Caribbean area. Two main types of biological control agents, either trematode parasites or competitor snails have been studied and tested against the snail hosts of schistosomiasis in this region. The first one, Ribe...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/s0001-706x(00)00123-6
更新日期:2000-10-23 00:00:00
abstract::In Triatominae, female fecundity and fertility may be affected by age, adult nutritional status (i.e., blood meal source and amount of blood ingested) and number of matings. Triatoma infestans (Klug) is the main vector of Chagas disease in southern South America and considering that reproductive success is intimately ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2011.05.015
更新日期:2011-08-01 00:00:00
abstract::The effect of concomitant infection with schistosomes, Plasmodium falciparum and soil transmitted helminths (STHs) on anaemia was determined in 609 Zimbabwean primary school children. P. falciparum, haemoglobin levels and serum ferritin were determined from venous blood. Kato Katz, formal ether concentration and urine...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2010.02.010
更新日期:2010-07-01 00:00:00
abstract::The objective of this study was to investigate paraoxonase-1 (PON1) activity, cortisol levels, and the lipid profile in the sera of alcoholic and non-alcoholic Strongyloides stercoralis-infected and uninfected individuals in a sample of 276 individuals attended at the National Health System in Salvador, Bahia, Brazil....
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2016.10.013
更新日期:2017-02-01 00:00:00