Fenitrothion Resistance in Culex pipiens pipiens (Diptera: Culicidae) from Tunisia: Status and Challenges

2019 ◽  
Vol 91 (2) ◽  
pp. 154
Keyword(s):  
Culex Pipiens ◽  
Culex Pipiens Pipiens

scholarly journals Gonoactivity of Culex (Culex) (Diptera: Culicidae) Mosquitoes During Winter in Temperate Argentina

2021 ◽  
Author(s):  
María Florencia Branda ◽  
Magdalena Laurito ◽  
Andrés Mario Visintin ◽  
Walter Ricardo Almirón
Keyword(s):  
Developmental Stage ◽  
Culex Quinquefasciatus ◽  
Culex Pipiens ◽  
Life Cycles ◽  
Morphological Identification ◽  
Dry Ice ◽  
Culex Pipiens Pipiens ◽  
Host Seeking ◽  
Baited Traps ◽  
The City

Abstract The subgenus Culex L. includes species involved in summer–autumn arbovirus transmission but studies during winter are scarce in temperate Argentina. Female specimens were collected host-seeking at dry-ice-baited traps during autumn–winter–spring at two sites in Córdoba City during 2016 and 2017. The specimens were morphologically identified and dissected to determine the follicular developmental stage (gonotrophic activity). Females with advanced follicular stages (≥III) were subjected to molecular procedures to confirm or re-identify previous morphological identification. Five species (Culex apicinus Philippi (Diptera: Culicidae), Culex dolosus (Lynch-Arribálzaga) (Diptera: Culicidae), Culex maxi Dyar (Diptera: Culicidae), Culex pipiens pipiens L. (Diptera: Culicidae), and Culex quinquefasciatus Say (Diptera: Culicidae)) were collected and found gonoactive during winter; showing that a high proportion of Culex (Culex) females remain reproductively active during the unfavorable season for mosquito populations. Among them, it is worth noting the collection of Cx. quinquefasciatus, vector of the St. Louis encephalitis virus (endemic in the city), a specimen of Cx. p. pipiens, and a hybrid of Cx. p. pipiens/Cx. quinquefasciatus (during autumn). The study of this community during winter should continue because a high gonoactive female proportion with advanced follicular stages was found: 29.12 and 13.07% in 2016 and 2017, respectively. Local studies such as this one provide evidence about ornithophilic Culex species with active year-round life cycles, species that could favor arbovirus overwintering.

Viability of Culex pipiens pipiens eggs affected by nutrition and aposymbiosis

1985 ◽  
Vol 45 (2) ◽  
pp. 225-230 ◽  
Author(s):  
Dominic S.T. Awahmukalah ◽  
Marion A. Brooks
Keyword(s):  
Culex Pipiens ◽  
Culex Pipiens Pipiens

Microbiome reduction prevents lipid accumulation during early diapause in the northern house mosquito, Culex pipiens pipiens

2021 ◽  
Vol 134 ◽  
pp. 104295 ◽  
Author(s):  
Elise M. Didion ◽  
Zakee L. Sabree ◽  
Laura Kenyon ◽  
Gabriela Nine ◽  
Richard W. Hagan ◽  
...  
Keyword(s):  
Lipid Accumulation ◽  
Culex Pipiens ◽  
Culex Pipiens Pipiens

Resistance to pyrethroid insecticides in Culex pipiens pipiens (Diptera: Culicidae) from Tunisia

Acta Tropica ◽  
2008 ◽  
Vol 107 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Jabeur Daaboub ◽  
Raja Ben Cheikh ◽  
Ali Lamari ◽  
Ibtissem Ben Jha ◽  
Mohamed Feriani ◽  
...  
Keyword(s):  
Culex Pipiens ◽  
Pyrethroid Insecticides ◽  
Culex Pipiens Pipiens

scholarly journals Resistance status to deltamethrin pyrethroid of Culex pipiens pipiens (Diptera: Culicidae) collected from three districts of Tunisia

2018 ◽  
Vol 18 (4) ◽  
pp. 1182
Author(s):  
Ahmed Tabbabi ◽  
Jabeur Daaboub ◽  
Raja Ben Cheikh ◽  
Ali Laamari ◽  
Mohamed Feriani ◽  
...  
Keyword(s):  
Culex Pipiens ◽  
Culex Pipiens Pipiens

The diagnostic utility of sequence-based assays for the molecular delimitation of the epidemiologically relevant Culex pipiens pipiens taxa (Diptera: Culicidae)

2019 ◽  
Vol 109 (6) ◽  
pp. 752-761
Author(s):  
L. Francuski ◽  
N. Gojković ◽  
B. Krtinić ◽  
V. Milankov
Keyword(s):  
Culex Pipiens ◽  
Population Based ◽  
Diagnostic Assay ◽  
Global Level ◽  
Vector Surveillance ◽  
Habitat Types ◽  
Genetic Structuring ◽  
Culex Pipiens Pipiens ◽  
Diagnostic Values ◽  
Urban Rural

AbstractThe northern house mosquito (Culex pipiens pipiens L.) is a vector of several important pathogens and comprises two epidemiologically distinct ecotypes (molestus Forskål and pipiens). The delimitation of its ecotypes is a crucial, yet controversial step in vector surveillance due to varying diagnostic values of different characters. Therefore, we reviewed the success of a diagnostic assay based on the mitochondrial cytochrome c oxidase subunit I locus (COI) by analyzing previously published sequences of molestus and pipiens sampled in different geographical areas. Next, by genotyping individuals from Northern Serbia at this locus, we additionally assessed whether genetic structure of urban and rural Cx. p. pipiens ecotypes corresponded to the admixture pattern. Finally, to account for the different susceptibility of genetic markers to introgression, we also analyzed genetic structuring based on the ribosomal internal transcribed spacer 2 (ITS2). No latitude-dependent differentiation of Cx. p. pipiens ecotypes was found at a global level, with the COI assay further failing to accurately identify molestus and pipiens ecotypes. Likewise, both individual- (BAPS) and population-based (analysis of molecular variance and FST estimates) methods showed no significant urban/rural genetic differentiation in Serbia, indicating unhindered gene flow between different Cx. p. pipiens habitat types. The findings challenge the previous instances of Cx. p. pipiens ecotype identification, while also spotlighting the vectorial capacity of their hybrid offspring.

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