Vectorial Capacity of DDT Resistant�Anopheles stephensi�and Role of GSTs

AbstractThe foraging behaviour of frequency-dependent prey selection by larval instars of Toxorhynchites splendens (Wiedemann) was studied in the laboratory. Prey size selection (second vs fourth instars of Aedes aegypti Linnaeus or Anopheles stephensi Liston) by third and fourth instar predators was frequency-dependent. However, in the case of second instar predators, prey size selection was not frequency-dependent and the predator preferred second instar to fourth instar prey. When offered second instars of Aedes aegypti and Anopheles stephensi the preference for one species over the other was frequency-dependent in all the three predator instars. The role of frequency-dependent prey selection in the stability of prey—predator interaction at low equilibrium levels is discussed.

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Estimates of Malaria Vectorial Capacity for Anopheles Culicifacies and Anopheles Stephensi in Rural Punjab Province, Pakistan1

Journal of Medical Entomology ◽

10.1093/jmedent/19.1.98 ◽

1982 ◽

Vol 19 (1) ◽

pp. 98-103 ◽

Cited By ~ 24

Author(s):

William K. Reisen ◽

Peter F. L. Boreham

Keyword(s):

Anopheles Stephensi ◽

Vectorial Capacity ◽

Anopheles Culicifacies ◽

Punjab Province

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The Microbiota of Three Anopheles Species in China

Journal of the American Mosquito Control Association ◽

10.2987/20-6940 ◽

2021 ◽

Vol 37 (1) ◽

pp. 38-40

Author(s):

Yuebiao Feng ◽

Jianxia Tang ◽

Dan Zhu ◽

Yi Zhang ◽

Guoding Zhu ◽

...

Keyword(s):

Population Structure ◽

Anopheles Stephensi ◽

Vector Competence ◽

The Other ◽

Anopheles Dirus ◽

Anopheles Species ◽

Linear Discriminant ◽

Rrna Sequencing ◽

Anopheles Lesteri

ABSTRACT Microbiota are vital for the development, physiology, and vectorial capacity of mosquitoes. The composition and role of microbiota in Anopheles species, especially Anopheles gambiae and Anopheles stephensi, have been extensively studied, but little is known about the microbiota of Anopheles species in China. We characterized the microbial communities of Anopheles dirus, Anopheles sinensis, and Anopheles lesteri by 16S rRNA sequencing. There were distinct differences in the composition of microbiota in An. lesteri and the other 2 species. The discriminatory genera in the 3 species were analyzed by the linear discriminant analysis effect size method. Our results provide an overview of the population structure of microbiota in 3 native Anopheles species and will pave the way for further understanding of their role in mosquito physiology and vector competence.

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Role of gut inhabitants on vectorial capacity of mosquitoes

Journal of Vector Borne Diseases ◽

10.4103/0972-9062.242567 ◽

2018 ◽

Vol 55 (2) ◽

pp. 69 ◽

Cited By ~ 8

Author(s):

EmbalilMathachan Aneesh ◽

Lekshmi Jayakrishnan ◽

AmbalaparambilVasu Sudhikumar

Keyword(s):

Vectorial Capacity

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The role of saliva of Anopheles stephensi in inflammatory response: identification of a high molecular weight neutrophil chemotactic factor

Parasitology Research ◽

10.1007/s004360000355 ◽

2001 ◽

Vol 87 (5) ◽

pp. 376-382 ◽

Cited By ~ 32

Author(s):

Makoto Owhashi ◽

Masakazu Harada ◽

Setsuo Suguri ◽

Hiroshi Ohmae ◽

Akira Ishii

Keyword(s):

Molecular Weight ◽

Inflammatory Response ◽

High Molecular Weight ◽

Anopheles Stephensi ◽

Chemotactic Factor ◽

Neutrophil Chemotactic Factor

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Genome Sequences of Staphylococcus hominis Strains ShAs1, ShAs2, and ShAs3, Isolated from the Asian Malaria Mosquito Anopheles stephensi

Genome Announcements ◽

10.1128/genomea.00085-16 ◽

2016 ◽

Vol 4 (2) ◽

Cited By ~ 5

Author(s):

Grant L. Hughes ◽

Juan Antonio Raygoza Garay ◽

Vikas Koundal ◽

Jason L. Rasgon ◽

Michael M. Mwangi

Keyword(s):

Anopheles Stephensi ◽

Draft Genome ◽

Malaria Mosquito ◽

Genome Sequences ◽

Genomic Resources ◽

Bacterial Microbiome ◽

Staphylococcus Hominis

Staphylococcus hominis is a culturable component of the bacterial microbiome of Anopheles stephensi . Here, we present the annotated draft genome sequences of three S. hominis isolates from A. stephensi . These genomic resources will facilitate experiments to further our understanding of the role of bacteria in mosquito biology.

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Biochemical Basis of Cyfluthrin and DDT Resistance in Anopheles stephensi (Diptera: Culicidae) in Malarious Area of Iran

Journal of Arthropod-Borne Diseases ◽

10.18502/jad.v12i3.82 ◽

2018 ◽

Author(s):

Mohammad Amin Gorouhi ◽

Mohammad Ali Oshaghi ◽

Hassan Vatandoost ◽

Ahmad Ali Enayati ◽

Ahmad Raeisi ◽

...

Keyword(s):

Anopheles Stephensi ◽

Indian Subcontinent ◽

Management Strategies ◽

Resistance Management ◽

Cytochrome P450s ◽

Enzyme Assays ◽

Biochemical Basis ◽

Development Of Resistance ◽

Ddt Resistance

Background: Anopheles stephensi is a key urban malaria vector in the Indian subcontinent and Middle East including south and southeast of Iran. Wide application of insecticides resulted in resistance of this species to various insecticides in these regions. This study was conducted to reveal the role of metabolic mechanisms in the development of resistance in An. stephensi to DDT and cyfluthrin. Methods: Field mosquito specimens were collected from Chabahar Seaport, southeast corner of Iran, in 2015. Insecticide susceptibility and enzyme assays were conducted as recommended by WHO. Results: Mean enzyme ratios were 3.95 and 3.04 for α- esterases and 2.40 and 1.97 for β- esterases in the DDT and cyfluthrin- resistant populations correspondingly compared with the susceptible strain. The GSTs enzyme mean activity ratios were 5.07 and 2.55 in the DDT and cyfluthrin- resistant populations compared with the susceptible beech strain. The cytochrome p450s enzyme ratios were 1.11 and 1.28 in the DDT and cyfluthrin- resistant populations respectively compared with the susceptible beech strain. Conclusion: Metabolic mechanisms play a crucial role in the development of DDT and cyfluthrin resistance in An. stephensi, therefore, further evaluation of the mechanisms involved as well as implementation of proper insecticide resistance management strategies are recommended.

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