scholarly journals Larval breeding habitats and ecological factors influence the species composition of mosquito (Diptera : Culicidae) in the parks of Dhaka city, Bangladesh

2018 ◽  
Vol 45 (2) ◽  
pp. 111-122 ◽  
Author(s):  
Afroza Sultana ◽  
Sharmin Hasan ◽  
Mosharraf Hossain ◽  
Abdul Alim ◽  
Mohammad Al Mamun ◽  
...  
Keyword(s):  
Mosquito Control ◽  
Mosquito Species ◽  
Ecological Factors ◽  
Control Program ◽  
Breeding Habitat ◽  
Coconut Shell ◽  
Larval Abundance ◽  
Tree Hole ◽  
Breeding Habitats ◽  
Tree Holes

Mosquito larval ecology is prerequisite for determining the larval abundance and species assemblage in mosquito control program. The study explored the association of five mosquito species with their breeding habitat diversity and species distribution in three selected parks from May to October, 2015. A total of 3217 mosquito larvae were reported from six breeding habitats, namely tree hole, leaf axils, water bottle, tire, drain and coconut shell. The frequency of the three species (Ae. aegypti, Ae. albopictus and Ar. subalbatus) coexistence was higher in tree holes (82.4%) than that of the other coexisting species. Pearson Chi-square result revealed that the association of species was significantly dependent on the breeding habitats. ANOVA further suggested that mosquito density varied across habitats where among the highest density of Cx. quinquefasciatus (3.87 ± 0.22) found in drain, followed by both Ae. albopictus (2.02 ± 0.17) and Ar. subalbatus (0.50 ± 0.09) in tree holes and Ae. aegypti (1.25 ± 0.23) in coconut shell. Cx. tritaeniorhynchus occurred in drain with the least observed density (0.03 ± 0.01). CCA results suggested that Aedes species were likely preferred to oviposit in shaded habitats where pH was associated with Ae. albopictus and dissolved oxygen was with Ae. aegypti and Ar. subalbatus. Culex species were positively associated with the habitats characterizing muddy bottom and emerging vegetation but not with any of the physico-chemical parameters. These findings concluded that ecological factors influence mosquito species to favor their breeding habitats can be helpful in controlling targeted vector species as well as the mosquito borne diseases.Bangladesh J. Zool. 45(2): 111-122, 2017

scholarly journals Naturally Occurring Microbiota Associated with Mosquito Breeding Habitats and Their Effects on Mosquito Larvae

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
H. A. K. Ranasinghe ◽  
L. D. Amarasinghe
Keyword(s):  
Abiotic Factors ◽  
Mosquito Species ◽  
Breeding Habitat ◽  
Larval Abundance ◽  
Mosquito Larvae ◽  
Natural Habitats ◽  
Individual Fitness ◽  
Naturally Occurring ◽  
Breeding Habitats ◽  
Mosquito Breeding

Immature mosquitoes are aquatic, and their distribution, abundance, and individual fitness in a particular breeding habitat are known to be dependent on mainly three factors: biotic factors, abiotic factors, and their interaction between each other and with other associated taxa. Mosquito breeding habitats harbor a diversified naturally occurring microbiota assemblage, and the biota have different types of interactions with mosquito larvae in those habitats. Those interactions may include parasitism, pathogenism, predation, and competition which cause the mortality of larvae, natural reduction of larval abundance, or alterations in their growth. Many microbiota species serve as food items for mosquito larvae, and there are also some indigestible or toxic phytoplanktons to larvae. However, when there is coexistence or mutualism of different mosquito species along with associated microbiota, they form a community sharing the habitat requirements. With the available literature, it is evident that the abundance of mosquito larvae is related to the densities of associated microbiota and their composition in that particular breeding habitat. Potential antagonist microbiota which are naturally occurring in mosquito breeding habitats could be used in integrated vector control approaches, and this method rises as an ecofriendly approach in controlling larvae in natural habitats themselves. To date, this aspect has received less attention; only a limited number of species of microbiota inhabiting mosquito breeding habitats have been recorded, and detailed studies on microbiota assemblage in relation to diverse vector mosquito breeding habitats and their association with mosquito larvae are few. Therefore, future studies on this important ecological aspect are encouraged. Such studies may help to identify field characteristic agents that can serve as mosquito controlling candidates in their natural habitats themselves.

Tree hole mosquito species composition and relative abundances differ between urban and adjacent forest habitats in northwestern Argentina

2017 ◽  
Vol 108 (2) ◽  
pp. 203-212 ◽  
Author(s):  
C. Mangudo ◽  
J.P. Aparicio ◽  
G.C. Rossi ◽  
R.M. Gleiser
Keyword(s):  
Urban Areas ◽  
Mosquito Species ◽  
Urban Environments ◽  
Negative Effects ◽  
Larval Habitats ◽  
Species Association ◽  
Tree Hole ◽  
Dengue Outbreaks ◽  
Forested Areas ◽  
Tree Holes

AbstractWater-holding tree holes are main larval habitats for many pathogen vectors, especially mosquitoes (Diptera: Culicidae). Along 3 years, the diversity and composition of mosquito species in tree holes of two neighbouring but completely different environments, a city and its adjacent forest, were compared using generalized linear mixed models, PERMANOVA, SIMPER and species association indexes. The city area (Northwest Argentina) is highly relevant epidemiologically due to the presence of Aedes aegypti L. (main dengue vector) and occurrence of dengue outbreaks; the Yungas rainforests are highly biologically diverse. In total seven mosquito species were recorded, in descending order of abundance: Ae. aegypti, Haemagogus spegazzinii Brèthes, Sabethes purpureus (Theobald), Toxorhynchites guadeloupensis Dyar and Knab, Aedes terrens Walker, Haemagogus leucocelaenus Dyar & Shannon and Sabethes petrocchiae (Shannon and Del Ponte). The seven mosquito species were recorded in both city sites and forested areas; however, their mosquito communities significantly diverged because of marked differences in the frequency and relative abundance of some species: Tx. guadeloupensis and Ae. aegypti were significantly more abundant in forest and urban areas, respectively. Positive significant associations were detected between Ae. aegypti, Hg. spegazzinii and Hg. leucocelaenus. The combined presence of Ae. aegypti, Haemagogus and Sabethes in the area also highlight a potential risk of yellow fever epidemics. Overall results show an impoverished tree hole mosquito fauna in urban environments, reflecting negative effects of urbanization on mosquito diversity.

scholarly journals Fauna associated with Malayan filariasis transmission in Banyuasin, South Sumatra, Indonesia

2021 ◽  
pp. 1954-1959
Author(s):  
Budi Mulyaningsih ◽  
Sitti Rahmah Umniyati ◽  
Suwarno Hadisusanto ◽  
Erwin Edyansyah
Keyword(s):  
Mosquito Species ◽  
Polymerase Chain Reaction Method ◽  
Breeding Habitat ◽  
Chain Reaction ◽  
Cross Sectional ◽  
Blood Samples ◽  
Breeding Habitats ◽  
Polymerase Chain ◽  
Reservoir Hosts ◽  
Mansonia Uniformis

Background and Aim: Brugia malayi is known to be zoonotically important because it can be transmitted from animals (mammals and primates) to humans or from humans to humans through mosquito vectors. This study was conducted to explore the fauna associated with Malayan filariasis transmission in Sedang village, Suak Tapeh District, Banyuasin Regency, South Sumatra Province, Indonesia. Materials and Methods: A cross-sectional research design with an observational and analytical approach was applied in this study, and it was conducted in May 2018. Mosquitoes were collected twice using human bait both inside and outside the house from 6:00 p.m. to 6:00 a.m. The presence of competitors, predators, and reservoir hosts in the areas of five breeding habitats of Mansonia spp. was observed. The presence of microfilaria was confirmed under a microscope in night blood samples of inhabitants and cats. The presence of infective larvae (L3) of B. malayi was identified microscopically and based on the polymerase chain reaction method in female Mansonia mosquitoes. Results: A total of 12 mosquito species were found, among which Mansonia uniformis was the dominant mosquito, and the predominant competitor was Mansonia annulifera. Dragonflies, as predators were found in two breeding habitats and fish were found in one breeding habitat. The L3 of B. malayi were not identified in the mosquitoes, and the microfilariae of B. malayi were not found in the blood samples of inhabitants and cats. Conclusion: Although Mansonia mosquito population was abundant in Banyuasin Regency, the mosquito was not confirmed as an intermediate host of B. malayi, and the cat was not confirmed as a reservoir of B. malayi in the location.

scholarly journals Spot Survei Entomologi Malaria di Daerah Epidemi di Kabupaten Kotabaru Kalimantan Selatan

2021 ◽  
Vol 20 (2) ◽  
pp. 82-89
Author(s):  
Muhammad Rasyid Ridha ◽  
Budi Hairani ◽  
Abdullah Fadilly
Keyword(s):  
Aedes Albopictus ◽  
Culex Quinquefasciatus ◽  
Mosquito Species ◽  
Breeding Habitat ◽  
Malaria Vectors ◽  
Aedes Vexans ◽  
Culex Tritaeniorhynchus ◽  
Breeding Habitats ◽  
Mosquito Breeding ◽  
Suitable Area

Latar belakang: Indonesia menargetkan eliminasi malaria pada tahun 2030. Kabupaten Kotabaru merupakan daerah endemis malaria. Salah satu Desa Endemis yaitu Desa Batang Kulur yang terjadi peningkatan kasus signifikan sebanyak 12 kasus pada Bulan Maret 2019. Tujuan penelitian ini adalah untuk mengukur indeks entomologi, karakteristik, dan lingkungan habitat perkembangbiakan vektor malaria di Desa Batang Kulur.Metode: Kegiatan yang dilakukan yaitu penangkapan nyamuk dengan umpan orang, identifikasi dan pembedahan ovarium nyamuk untuk diketahui parusitas (pernah/tidak pernah bertelur) yang digunakan untuk memprediksi umur  dan survei habitat perkembangbiakan vektor malaria.Hasil: Spesies dan komposisi nyamuk yang ditemukan yaitu Aedes vexans, Aedes albopictus, Culex quinquefasciatus, Culex tritaeniorhynchus, Culex vishnui, Mansonia dives dan Anopheles leucosphyrus. Kepadatan nyamuk Anopheles leucosphyrus 0,30 dan kepadatan permalam yaitu 2,67 dengan peluang hidup perhari 95% serta perkiraan umur populasi 21,54 hari. Fluktuasi Anopheles leucosphyrus mulai muncul pada jam 22.00 dan kembali meningkat pada jam 04.00. Tempat perindukan nyamuk yang ditemukan yaitu Habitat perkembang biakan nyamuk yang ditemukan ada 2 yaitu kolam dan mata air.Simpulan: Terdapat habitat perkembang biakan yang mendukung, peluang hidup 95% dan potensi umur nyamuk lebih dari masa inkubasi Plasmodium sehingga di Desa Batang Kulur merupakan daerah yang cocok untuk perkembangan vektor malaria. ABSTRACT Title: Investigation of Spot Survey of Malaria Entomological in Epedemic Areas in Kotabaru District, South KalimantanBackground: Indonesia is targeting malaria elimination by 2030. Kotabaru Regency is a malaria endemic area. One of the endemic villages, Batang Kulur Village, saw a significant increase of 12 cases in March 2019. The purpose of this study was to measure the entomological index, characteristics, and environment of the malaria vector breeding habitat in Batang Kulur Village.Method: Activities carried out include catching mosquitoes by baiting people, telephone and surgery for the mosquito ovaries to determine of parity (parous /nullyparous) which are used to predict age and survey the breeding habitats for malaria vectors.Result: The mosquito species and composition found were Aedes vexans, Aedes albopictus, Culex quinquefasciatus, Culex tritaeniorhynchus, Culex vishnui, Mansonia dives and Anopheles leucosphyrus. The density of the Anopheles leucosphyrus was 0.30 and the per night density was 2.67 with a 95% chance of survival per day and an estimated population age of 21.54 days. Anopheles leucosphyrus fluctuations began to appear at 22.00 and again increased at 04.00. The mosquito breeding places found were 2 mosquito breeding habitats, namely ponds and springs.Conclusion: There is a suitable breeding habitat, a 95% chance of survival and a potential age of mosquitoes that is more than the plasmodium incubation period so that in Batang Kulur Village is a suitable area for the development of malaria vectors. 

scholarly journals Mosquito survey reveals the first record of Aedes (Diptera: Culicidae) species in urban area, Annaba district, Northeastern Algeria

2021 ◽  
Vol 90 (1) ◽  
pp. 14-26
Author(s):  
Djamel Eddine Rachid Arroussi ◽  
Ali Bouaziz ◽  
Hamid Boudjelida
Keyword(s):  
Urban Area ◽  
Mosquito Control ◽  
Species Abundance ◽  
First Record ◽  
Breeding Habitat ◽  
Larval Habitats ◽  
Breeding Habitats ◽  
Culiseta Longiareolata ◽  
Distribution And Ecology ◽  
First Time

The diversity, distribution and ecology of mosquitoes, especially arbovirus vectors are important indices for arthropod-borne diseases control. The mosquito larvae were collected in different habitats in four sites of Annaba district, Algeria, during the period of March 2018 to February 2019 and the properties of larval habitats were recorded for each site. The systematic study revealed the presence of 8 species belonging to 4 genera; including Culex pipiens (Linnaeus, 1758), Culex modestus (Ficalbi, 1889), Culex theileri (Theobald, 1903), Culiseta longiareolata (Macquart, 1838), Anopheles labranchiae (Falleroni, 1926), Anopheles claviger (Meigen, 1804), Aedes aegypti (Linnaeus, 1762) and Aedes albopictus (Skuse, 1894). Among the species, C. pipiens presented the highest species abundance (RA %) (55.23%) followed by C. longiareolata (20.21%). The Aedes species are recorded for the first time in the study urban area. Variation of diversity in different sites depends on the type of breeding habitat. These results provided important information on species diversity, distribution and factors associated with breeding habitats. They could be used for the mosquito control and to prevent the spread of mosquito-borne diseases to the population of the region.

scholarly journals First records of Aedes pulcritarsis (Rondani, 1872) (Diptera: Culicidae) in Austria

2022 ◽  
Author(s):  
Karin Bakran-Lebl ◽  
Hans Jerrentrup ◽  
Eleni Daroglou ◽  
Wolf Peter Pfitzner ◽  
Hans-Peter Fuehrer ◽  
...  
Keyword(s):  
Central Europe ◽  
Mosquito Species ◽  
Mediterranean Area ◽  
Breeding Habitat ◽  
Distribution Limit ◽  
The Past ◽  
Tree Hole ◽  
Northern Distribution ◽  
The Mediterranean ◽  
First Time

AbstractAedes pulcritarsis is a tree-hole breeding species with its main distribution in the Mediterranean area. Within the scope of two independent monitoring programmes, this mosquito species was detected for the first time in Austria, in the province of Lower Austria (2018, districts Mistelbach and Gaenserndorf; 2020, district Bruck an der Leitha). As the climatic and habitat situation in Central Europe seems to be generally suitable for this species, the most likely explanation for the species not being recorded previously is that it might have been overlooked in the past due to its specialized breeding habitat. However, further research on the distribution of Ae. pulcritarsis in Austria would be needed to support this hypothesis. The results from this study will contribute to the investigation of the northern distribution limit of Ae. pulcritarsis in Europe and possible changes thereof.

scholarly journals At the tip of an iceberg: citizen science and active surveillance collaborating to broaden the known distribution of Aedes japonicus in Spain

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Roger Eritja ◽  
Sarah Delacour-Estrella ◽  
Ignacio Ruiz-Arrondo ◽  
Mikel A. González ◽  
Carlos Barceló ◽  
...  
Keyword(s):  
Citizen Science ◽  
Active Surveillance ◽  
Mosquito Control ◽  
Mosquito Species ◽  
Surveillance Systems ◽  
Northern Spain ◽  
Surveillance Strategy ◽  
Aedes Japonicus ◽  
Invasive Mosquito Species ◽  
Invasive Mosquito

Abstract Background Active surveillance aimed at the early detection of invasive mosquito species is usually focused on seaports and airports as points of entry, and along road networks as dispersion paths. In a number of cases, however, the first detections of colonizing populations are made by citizens, either because the species has already moved beyond the implemented active surveillance sites or because there is no surveillance in place. This was the case of the first detection in 2018 of the Asian bush mosquito, Aedes japonicus, in Asturias (northern Spain) by the citizen science platform Mosquito Alert. Methods The collaboration between Mosquito Alert, the Ministry of Health, local authorities and academic researchers resulted in a multi-source surveillance combining active field sampling with broader temporal and spatial citizen-sourced data, resulting in a more flexible and efficient surveillance strategy. Results Between 2018 and 2020, the joint efforts of administrative bodies, academic teams and citizen-sourced data led to the discovery of this species in northern regions of Spain such as Cantabria and the Basque Country. This raised the estimated area of occurrence of Ae. japonicus from < 900 km2 in 2018 to > 7000 km2 in 2020. Conclusions This population cluster is geographically isolated from any other population in Europe, which raises questions about its origin, path of introduction and dispersal means, while also highlighting the need to enhance surveillance systems by closely combining crowd-sourced surveillance with public health and mosquito control agencies’ efforts, from local to continental scales. This multi-actor approach for surveillance (either passive and active) shows high potential efficiency in the surveillance of other invasive mosquito species, and specifically the major vector Aedes aegypti which is already present in some parts of Europe. Graphical abstract

scholarly journals Mosquito Control Priorities in Florida—Survey Results from Florida Mosquito Control Districts

Pathogens ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 947
Author(s):  
Rishi Kondapaneni ◽  
Ashley N. Malcolm ◽  
Brian M. Vazquez ◽  
Eric Zeng ◽  
Tse-Yu Chen ◽  
...  
Keyword(s):  
State Government ◽  
Mosquito Control ◽  
Control Strategies ◽  
Mosquito Species ◽  
Research Priorities ◽  
Current Control ◽  
Control Programs ◽  
Common Control ◽  
Surveillance Programs ◽  
Research Questions

Florida lies within a subtropical region where the climate allows diverse mosquito species including invasive species to thrive year-round. As of 2021, there are currently 66 state-approved Florida Mosquito Control Districts, which are major stakeholders for Florida public universities engaged in mosquito research. Florida is one of the few states with extensive organized mosquito control programs. The Florida State Government and Florida Mosquito Control Districts have long histories of collaboration with research institutions. During fall 2020, we carried out a survey to collect baseline data on the current control priorities from Florida Mosquito Control Districts relating to (1) priority control species, (2) common adult and larval control methods, and (3) major research questions to address that will improve their control and surveillance programs. The survey data showed that a total of 17 distinct mosquito species were considered to be priority control targets, with many of these species being understudied. The most common control approaches included truck-mounted ultra-low-volume adulticiding and biopesticide-based larviciding. The districts held interest in diverse research questions, with many prioritizing studies on basic science questions to help develop evidence-based control strategies. Our data highlight the fact that mosquito control approaches and priorities differ greatly between districts and provide an important point of comparison for other regions investing in mosquito control, particularly those with similar ecological settings, and great diversity of potential mosquito vectors, such as in Florida. Our findings highlight a need for greater alignment of research priorities between mosquito control and mosquito research. In particular, we note a need to prioritize filling knowledge gaps relating to understudied mosquito species that have been implicated in arbovirus transmission.

scholarly journals Larvicidal Effectiveness of Azolla pinnata against Aedes aegypti (Diptera: Culicidae) with Its Effects on Larval Morphology and Visualization of Behavioural Response

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Nor Shaida Husna Zulkrnin ◽  
Nurul Nadiah Rozhan ◽  
Nur Amanina Zulkfili ◽  
Nik Raihan Nik Yusoff ◽  
Mohd Sukhairi Mat Rasat ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Mosquito Control ◽  
Larval Mortality ◽  
Control Program ◽  
Test Method ◽  
World Health ◽  
Azolla Pinnata ◽  
Agricultural Field ◽  
Aquatic Fern ◽  
Significant Difference

Dengue is vector-borne diseases with 390 million infections per year extending over 120 countries of the world. Aedes aegypti (L.) (Diptera: Culicidae) is a primary vector for dengue viral infections for humans. Current focus on application of natural product against mosquito vectors has been the main priority for research due to its eco-safety. The extensive use of chemical insecticides has led to severe health problems, environmental pollution, toxic hazards to human and nontarget species, and development of insecticide resistance on mosquitoes. Azolla pinnata is an aquatic fern and predominantly used as feed in poultry industry and as fertilizer in agricultural field for enhancing the fertility of rice paddy soil. The present study was conducted to explore the larvicidal efficacy of A. pinnata using fresh and powdered form against late third-stage larvae (6 days, 5 mm in larvae body length) of Ae. aegypti (L.) (Diptera: Culicidae). The larvicidal bioassays were performed using World Health Organization standard larval susceptibility test method for different concentration for powdered and fresh A. pinnata. Powdered A. pinnata concentration used during larvicidal bioassay ranges from 500ppm to 2000ppm; meanwhile, fresh A. pinnata ranges from 500ppm to 9,000,000 ppm. The highest mortality was at 1853 ppm for powdered A. pinnata compared with fresh A. pinnata at 2,521,535 ppm, while the LC50 for both powdered and fresh A. pinnata recorded at 1262 ppm and 1853 ppm, respectively. Finally, the analysis of variance (ANOVA) showed significant difference on Ae. aegypti larval mortality (F=30.439, df=1, p≤0.001) and concentration (F=20.002, df=1, p≤0.001) compared to powdered and fresh A. pinnata at 24-hour bioassay test. In conclusion, the powdered A. pinnata serves as a good larvicidal agent against Ae. aegypti (L.) (Diptera: Culicidae) and this study provided information on the lethal concentration that may have potential for a more eco-friendly Aedes mosquito control program.

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