scholarly journals Microbiome Interaction Networks and Community Structure From Laboratory-Reared and Field-Collected Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus Mosquito Vectors

2018 ◽  
Vol 9 ◽  
Author(s):  
Shivanand Hegde ◽  
Kamil Khanipov ◽  
Levent Albayrak ◽  
George Golovko ◽  
Maria Pimenova ◽  
...  
Keyword(s):  
Community Structure ◽  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Culex Quinquefasciatus ◽  
Interaction Networks ◽  
Mosquito Vectors

scholarly journals Microbiome interaction networks and community structure from lab-reared and field-collected Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus mosquito vectors

2018 ◽  
Author(s):  
Shivanand Hegde ◽  
Kamil Khanipov ◽  
Levent Albayrak ◽  
George Golovko ◽  
Maria Pimenova ◽  
...  
Keyword(s):  
Community Structure ◽  
Aedes Aegypti ◽  
Culex Quinquefasciatus ◽  
Physiological State ◽  
Microbial Interactions ◽  
Interaction Networks ◽  
Microbiome Composition ◽  
Host Seeking ◽  
Bacterial Microbiome ◽  
Multiple Species

AbstractMicrobial interactions are an underappreciated force in shaping insect microbiome communities. Although pairwise patterns of symbiont interactions have been identified, we have a poor understanding regarding the scale and the nature of co-occurrence and co-exclusion interactions within the microbiome. To characterize these patterns in mosquitoes, we sequenced the bacterial microbiome of Aedes aegypti, Ae. albopictus, and Culex quinquefasciatus caught in the field or reared in the laboratory and used these data to generate interaction networks. For collections, we used traps that attracted host-seeking or ovipositing female mosquitoes to determine how physiological state affects the microbiome under field conditions. Interestingly, we saw few differences in species richness or microbiome community structure in mosquitoes caught in either trap. Co-occurrence and co-exclusion analysis identified 116 pairwise interactions substantially increasing the list of bacterial interactions observed in mosquitoes. Networks generated from the microbiome of Ae. aegypti often included highly interconnected hub bacteria. There were several instances where co-occurring bacteria co-excluded a third taxa, suggesting the existence of tripartite relationships. Several associations were observed in multiple species or in field and laboratory-reared mosquitoes indicating these associations are robust and not influenced by environmental or host factors. To demonstrate that microbial interactions can influence colonization of the host, we administered symbionts to Ae. aegypti larvae that either possessed or lacked their resident microbiota. We found that the presence of resident microbiota can inhibit colonization of particular bacterial taxa. Our results highlight that microbial interactions in mosquitoes are complex and influence microbiome composition.

scholarly journals Chemical composition and larvicidal activity of essential oils from Zingiber montanum (J. Koenig) Link ex. A. Dietr. against three mosquito vectors

2020 ◽  
Vol 19 (6) ◽  
pp. 569-579 ◽  
Author(s):  
Le T Huong ◽  
◽  
Trinh T Huong ◽  
Nguyen TT Huong ◽  
Nguyen H Hung ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Larvicidal Activity ◽  
Aedes Albopictus ◽  
Culex Quinquefasciatus ◽  
Mosquito Vectors ◽  
Leaf Oil ◽  
Significant Mortality

The chemical composition and larvicidal activity of essential oils derived from the leaves and rhizomes of Zingiber montanum (J. Koenig) Link ex. A. Dietr. were reported. The main compounds in the leaf oil were -pinene (13.8%), -phellandrene (11.3%) and -pinene (7.3%) while the rhizome oil was dominated by sabinene (41.1%), terpinen-4-ol (22.7%) and (E)-nerolidol (14.3%). The minimum lethal concentration (larvicidal activity) LC50 of the rhizome oil at 24 h against Aedes albopictus was 35.17 μg/mL, while LC50 values of 32.20 μg/mL and 31.12 μg/mL were obtained against Aedes aegypti and Culex quinquefasciatus respectively. At 48 h the oil displayed larvicidal action with LC50 values of 23.18 μg/mL, 25.58 μg/mL and 18.99 μg/mL respectively towards Ae. albopictus, Ae. Aegypti and Cx. quinquefasciatus. The leaf oil did not exhibit significant mortality and larvicidal action. The results indicate the potential of rhizome essential oil of Z. montanum as a source of larvicidal agent.

scholarly journals Ligusticum sinense Nanoemulsion Gel as Potential Repellent against Aedes aegypti, Anopheles minimus, and Culex quinquefasciatus (Diptera: Culicidae)

Insects ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 596
Author(s):  
Anuluck Junkum ◽  
Wanchai Maleewong ◽  
Atiporn Saeung ◽  
Danita Champakaew ◽  
Arpaporn Chansang ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Culex Quinquefasciatus ◽  
Disease Transmission ◽  
Skin Irritation ◽  
Mosquito Vectors ◽  
Plant Family ◽  
Anopheles Minimus ◽  
Human Volunteers ◽  
Nanoemulsion Gel ◽  
Fresh Preparation

Ligusticum sinense Oliv. cv. is a species of Umbelliferae (Apiaceae), a large plant family in the order Apiales. In this study, L. sinense hexane extract nanoemulsion gel (LHE-NEG) was investigated for mosquito repellency and compared to the standard chemical, N,N-diethyl-3-methylbenzamide (DEET), with the goal of developing a natural alternative to synthetic repellents in protecting against mosquito vectors. The results demonstrated that LHE-NEG afforded remarkable repellency against Aedes aegypti, Anopheles minimus, and Culex quinquefasciatus, with median protection times (MPTs) of 5.5 (4.5–6.0), 11.5 (8.5–12.5), and 11.25 (8.5–12.5) h, respectively, which was comparable to those of DEET-nanoemulsion gel (DEET-NEG: 8.5 (7.0–9.0), 12.0 (10.0–12.5), and 12.5 (10.0–13.5) h, respectively). Evaluation of skin irritation in 30 human volunteers revealed no potential irritant from LHE-NEG. The physical and biological stability of LHE-NEG were determined after being kept under heating/cooling cycle conditions. The stored samples of LHE-NEG exhibited some changes in appearance and differing degrees of repellency between those kept for 3 and 6 heating/cooling cycles, thus providing slightly shorter MPTs of 4.25 (4.0–4.5) and 3.25 (2.5–3.5) h, respectively, when compared to those of 5.0 (4.5–6.0) h in fresh preparation. These findings encourage commercially developed LHE-based products as an alternative to conventional synthetic repellents in preventing mosquito bites and helping to interrupt mosquito-borne disease transmission.

scholarly journals Zika mosquito vectors: the jury is still out

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 2546 ◽  
Author(s):  
Walter S. Leal
Keyword(s):  
Aedes Aegypti ◽  
Yellow Fever ◽  
Culex Quinquefasciatus ◽  
Zika Virus ◽  
Field Data ◽  
Vector Competence ◽  
Sexual Transmission ◽  
Mosquito Vectors ◽  
Yellow Fever Mosquito ◽  
The Common

After a 40-year hiatus, the International Congress of Entomology (ICE 2016) convened in Orlando, Florida (September 25-30, 2016). One of the symposia at ICE 2016, the Zika Symposium, covered multiple aspects of the Zika epidemic, including epidemiology, sexual transmission, genetic tools for reducing transmission, and particularly vector competence. While there was a consensus among participants that the yellow fever mosquito, Aedes aegypti, is a vector of the Zika virus, there is growing evidence indicating that the range of mosquito vectors might be wider than anticipated. In particular, three independent groups from Canada, China, and Brazil presented and discussed laboratory and field data strongly suggesting that the southern house mosquito, Culex quinquefasciatus, also known as the common mosquito, is highly likely to be a vector in certain environments.

scholarly journals Vector competence of Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus mosquitoes for Mayaro virus

2020 ◽  
Vol 14 (4) ◽  
pp. e0007518 ◽  
Author(s):  
Thiago Nunes Pereira ◽  
Fabiano Duarte Carvalho ◽  
Silvana Faria De Mendonça ◽  
Marcele Neves Rocha ◽  
Luciano Andrade Moreira
Keyword(s):  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Culex Quinquefasciatus ◽  
Vector Competence ◽  
Mayaro Virus

scholarly journals Beauveria bassiana (Clavicipitaceae): a potent fungal agent for controlling mosquito vectors of Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti (Diptera: Culicidae)

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 3838-3851 ◽  
Author(s):  
Chinnasamy Ragavendran ◽  
Nawal Kishore Dubey ◽  
Devarajan Natarajan
Keyword(s):  
Aedes Aegypti ◽  
Beauveria Bassiana ◽  
Bioactive Compounds ◽  
Culex Quinquefasciatus ◽  
Anopheles Stephensi ◽  
Mosquito Vectors ◽  
Laboratory Conditions

The efficacy of bioactive compounds identified from Beauveria bassiana extracts as effective larvicidal and pupicidal agents against Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti mosquito vectors under laboratory conditions are studied.

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