Habitat and Seasonality Affect Mosquito Community Composition in the West Region of Cameroon

Mayi, Marie Paul Audrey; Bamou, Roland; Djiappi-Tchamen, Borel; Fontaine, Albin; Jeffries, Claire L.; Walker, Thomas; Antonio-Nkondjio, Christophe; Cornel, Anthony J.; Tchuinkam, Timoléon

doi:10.3390/insects11050312

Cited by 48 publications

(57 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…tritaeniorhynchus as the major vector of JE virus is typically rice field with short and sparse vegetation ( Erlanger et al, 2009 ; Keiser et al, 2005 ), although variations in breeding sites located into more urban areas have been reported possibly due to intense urbanization ( Liu et al, 2018 ). Modified land-use creates habitat fragmentation that might have played a role in the expansion of anthropophilic mosquitoes as well as forest-dwelling bats into residential areas, thus increasing the risk of human disease transmission ( Hassell et al, 2017 ; Mayi et al, 2020 ; Nunes et al, 2017 ). Current study results showed that 5 of 15 Cx.…”

Section: Discussionmentioning

confidence: 99%

The detection of Japanese encephalitis virus in Megachiropteran bats in West Kalimantan, Indonesia: A potential enzootic transmission pattern in the absence of pig holdings

Diptyanusa

Herini

Indarjulianto

et al. 2021

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

The West Kalimantan province in Borneo island, Indonesia belongs to endemic area of Japanese encephalitis (JE) that accounts for approximately 30% of total cases yearly. As the presence of pig holdings is uncommon in West Kalimantan, another reservoir host might have played a role in the local transmission of JE virus in this area. Current study aimed to identify the potential role of bats in the local transmission of JE by performing molecular detection of JE virus in bats and mosquitoes using RT-PCR. Sample collection was performed in 3 districts in West Kalimantan, covering 3 different ecosystems: forest, coastal, and residential areas. Bat collection was performed using mist net and harp net, while mosquito collection was carried out using animal-baited trap and human landing collection. A total of 373 blood samples from bats were tested for JE virus, among which 21 samples (5.6%) showed positive results, mainly from Cynopterus brachyotis (lesser short-nosed fruit bat) found in residential areas. Out of 53 mosquito pools, 3 JE-positive pools of Culex tritaeniorhynchus and Cx. vishnui were collected at the same location as JE-positive bats. Current study showed the first evidence of JE virus detection in several species of Megachiropteran bats in Indonesia, demonstrated the potential role of frugivorous bats in local transmission of JE in West Kalimantan. More aggressive measures are required in JE risk mitigation, particularly in initiating JE vaccination campaign and in avoiding disruption of bats’ natural habitats through changes in land-use.

show abstract

Section: Discussionmentioning

confidence: 99%

The detection of Japanese encephalitis virus in Megachiropteran bats in West Kalimantan, Indonesia: A potential enzootic transmission pattern in the absence of pig holdings

Diptyanusa

Herini

Indarjulianto

et al. 2021

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

show abstract

“…The parameters to determine each trap location in these habitats were similar to what is described by Mayi et al (2020) (32). We followed these criteria and the advice of Prof. dr. ir.…”

Section: Methodsmentioning

confidence: 99%

Establishment ofCulex modestusin Belgium and a glance into the virome of Belgian mosquito species

Wang

Rosas

Coninck

et al. 2020

Preprint

View full text Add to dashboard Cite

Culex modestus is a mosquito species with a relevant role in the transmission of West Nile virus and Usutu virus. Its presence has been reported across Europe, yet it is absent in Belgium. Field mosquitoes in the city of Leuven and surroundings were collected in the summer of 2019 and 2020. Species identification was performed by morphological features and partial sequences of the mitochondrial cytochrome oxidase subunit 1 (COI) gene. In order to examine the genetic structure of the Cx. modestus population found in Leuven, mitochondrial sequences of Cx. modestus mosquitoes collected in other 8 countries across Europe were retrieved from GenBank and confronted to the COI sequences from Belgian mosquitoes to construct a haplotype network.Hereby, we confirmed the new establishment of Cx. modestus in the surroundings of Leuven, Belgium. Haplotype network analysis showed that the Belgian population is rather diverse, suggesting that it must have been establish in Belgium for some time. The Belgian population was most closely related to Cx. modestus populations from the UK and Germany. The NetoVIR protocol was used to study the virome of 8 pools of mosquitoes. At least 33 eukaryotic viral species were identified. Nine (near-)complete genomes belonging to 6 viral species were identified, named Culex totivirus Leu1, Leu2 and Leu3, Alphamesonivirus Leu4, Iflavirus Leu5 and Leu6, Negevirus Leu7 and Leu8, and Rhabdovirus Leu9, all of which were closely related to known viruses. In conclusion, with the introduction of Cx. modestus in Belgium, the evaluation of its potential role in the transmission of arboviruses that could cause disease in animals and humans is necessary.Importance for non-specialistCulex modestus is a mosquito species that plays a role in nature as a ‘bridge’ vector, being able to transmit pathogens between birds, as well as from birds to mammals, including humans. In Belgium, this species was considered absent. Field mosquitoes were collected in urban, peri-urban and wetland areas in the summer of 2019 and 2020 in Leuven, and morphological and molecular methods were performed to confirm the presence of Cx. modestus in this region. The ability of mosquitoes to transmit pathogens can depend on a lot of factors, one of them being the natural virus composition in their bodies. For this purpose, we aimed to identify the whole virus group harbored by Belgian mosquitoes. This could provide more insight for mosquito and, therefore, disease control. Besides, the introduction of Cx. modestus may increase the risk of disease transmission. It is advisable to implement mosquito surveillance programs monitoring this species.

show abstract

“…However, due to the spread of West Nile Virus [CDC (Centers for Disease Control and Prevention) (2019)], studies mainly focused on arboviruses (Savage et al, 2007;Farajollahi et al, 2011) while to our knowledge very few studies have investigated avian malaria in vectors (Kimura et al, 2010;Carlson et al, 2018). Something similar can be observed in Central Africa for example, where the main entomological studies have been based on anthropophilic mosquitoes and human malaria or other zoonotic diseases of medical importance (Kamgang et al, 2012;Mayi et al, 2020), while the role of mosquito species in the transmission of avian Plasmodium is practically unknown (Njabo et al, 2009(Njabo et al, , 2011. If researchers with different research interests but working in the same region or localities were willing to combine their sampling effort, material and data, it would be beneficial for everyone and likely add value to everybody's data.…”

Section: How Can We Determine the Vector Specificity Of Avian Plasmodmentioning

confidence: 94%

Is Host Selection by Mosquitoes Driving Vector Specificity of Parasites? A Review on the Avian Malaria Model

Gutiérrez‐López¹,

Bourret²,

Loiseau³

2020

Front. Ecol. Evol.

View full text Add to dashboard Cite

Parasites and hosts are in a complex evolutionary arm race where host compatibility represents a key obstacle for successful infections. The degree of parasite specialization on a host varies along a continuum: on one end, extreme specialist parasites may be restricted to a single host species, and on the other, generalist parasites are able to infect a diverse set of hosts. Multiple intrinsic factors associated to the host, such as their immune system and physiological condition, can contribute to the evolution of host specificity of parasites and have been well-studied and documented in vertebrates. In contrast, vector specificity of parasites has been largely overlooked, especially in natural conditions. While a few studies suggested that insect vectors do not play an important role in shaping the parasite community structure since they may feed widely from the bird community, current studies have demonstrated the importance of vector feeding behavior on transmission dynamics for several vector-borne pathogens. Here, we provide a review on the specialization of avian Plasmodium in vectors, emphasizing the necessity to study simultaneously the three players to further understand how host choice by the vectors might influence the distribution of parasites in the wild. In addition, we suggest specific research directions making use of both empirical data gathered in the field and controlled experiments on vector host-feeding preferences.

show abstract

Habitat and Seasonality Affect Mosquito Community Composition in the West Region of Cameroon

Cited by 48 publications

References 63 publications

The detection of Japanese encephalitis virus in Megachiropteran bats in West Kalimantan, Indonesia: A potential enzootic transmission pattern in the absence of pig holdings

The detection of Japanese encephalitis virus in Megachiropteran bats in West Kalimantan, Indonesia: A potential enzootic transmission pattern in the absence of pig holdings

Establishment ofCulex modestusin Belgium and a glance into the virome of Belgian mosquito species

Is Host Selection by Mosquitoes Driving Vector Specificity of Parasites? A Review on the Avian Malaria Model

Contact Info

Product

Resources

About