scholarly journals Comparative study of the effect of <i>Bacillus thuringiensis</i> on larval populations of <i>Culex pipiens</i> L. (Diptera-Culicidae) of the City of Tlemcen (Algeria)

2013 ◽  
Vol 03 (03) ◽  
pp. 265-271 ◽  
Author(s):  
Nassima Tabti ◽  
Karima Abdellaoui-Hassaïne
Keyword(s):  
Bacillus Thuringiensis ◽  
Comparative Study ◽  
Culex Pipiens ◽  
The City

Introduction

2018 ◽  
Author(s):  
Avner de Shalit
Keyword(s):  
Comparative Study ◽  
The State ◽  
Urban Life ◽  
Political Rights ◽  
The City

Immigration should be discussed within the context of the city rather than the state because cities are now quite autonomous political entities and because nearly all immigrants settle in cities. Hence the meeting between locals and immigrants take place in the context of urban life rather than as citizens of the state. The book’s three questions are presented: should cities be in charge of deciding whether to allow immigrants to settle in the city? If yes, what local political rights should be granted to immigrants? And is there a model of integration which is superior to other models? The latter involved a comparative study of three such models, in Amsterdam, Berlin, and Jerusalem.

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.

scholarly journals Screening of Mosquitoes for West Nile Virus and Usutu Virus in Croatia, 2015–2020

2021 ◽  
Vol 6 (2) ◽  
pp. 45
Author(s):  
Ana Klobucar ◽  
Vladimir Savic ◽  
Marcela Curman Posavec ◽  
Suncica Petrinic ◽  
Urska Kuhar ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Culex Pipiens ◽  
Rt Pcr ◽  
West Nile ◽  
Usutu Virus ◽  
Culex Pipiens Complex ◽  
Mammalian Origin ◽  
Mosquito Pool ◽  
The City ◽  
Generation Sequencing

In the period from 2015 to 2020, an entomological survey for the presence of West Nile virus (WNV) and Usutu virus (USUV) in mosquitoes was performed in northwestern Croatia. A total of 20,363 mosquitoes were sampled in the City of Zagreb and Međimurje county, grouped in 899 pools and tested by real-time RT-PCR for WNV and USUV RNA. All pools were negative for WNV while one pool each from 2016 (Aedes albopictus), 2017 (Culex pipiens complex), 2018 (Cx. pipiens complex), and 2019 (Cx. pipiens complex), respectively, was positive for USUV. The 2018 and 2019 positive pools shared 99.31% nucleotide homology within the USUV NS5 gene and both clustered within USUV Europe 2 lineage. The next-generation sequencing of one mosquito pool (Cx. pipiens complex) collected in 2018 in Zagreb confirmed the presence of USUV and revealed several dsDNA and ssRNA viruses of insect, bacterial and mammalian origin.

scholarly journals Cloning and Expression of Two Crystal Protein Genes, cry30Ba1 and cry44Aa1, Obtained from a Highly Mosquitocidal Strain, Bacillus thuringiensis subsp. entomocidus INA288

2006 ◽  
Vol 72 (8) ◽  
pp. 5673-5676 ◽  
Author(s):  
Takeshi Ito ◽  
Tomonori Ikeya ◽  
Ken Sahara ◽  
Hisanori Bando ◽  
Shin-ichiro Asano
Keyword(s):  
Bacillus Thuringiensis ◽  
Aedes Aegypti ◽  
Culex Pipiens ◽  
Crystal Protein ◽  
Cloning And Expression ◽  
Culex Pipiens Pallens ◽  
Bacillus Thuringiensis Subsp ◽  
Pipiens Pallens ◽  
Crystal Protein Genes

ABSTRACT Two novel crystal protein genes, cry30Ba and cry44Aa, were cloned from Bacillus thuringiensis subsp. entomocidus INA288 and expressed in an acrystalliferous strain. Cry44Aa crystals were highly toxic to second-instar Culex pipiens pallens (50% mortality concentration [LC50] = 6 ng/ml) and Aedes aegypti (LC50 = 12 ng/ml); however, Cry30Ba crystals were not toxic.

Elsewheres

2020 ◽  
pp. 1-10
Author(s):  
Julie Ren
Keyword(s):  
Empirical Study ◽  
Comparative Study ◽  
Place Making ◽  
Urban Theory ◽  
The City ◽  
Comparative Urbanism

By examining 798 in Beijing and Künstlerhaus Bethanien in Berlin, Chapter 1 establishes the context for a comparative study of art spaces. Rather than empirical anomalies of their respective settings, these examples evince the capacity of art spaces to transform cities and the contested perceptions of their role in cities. The dual aims of the book are to understand how the place-making activities of art spaces add to an understanding about aspiration in the city as well as to develop a means to operationalize comparative urbanism. Beyond a critique of parochialism in urban theory, this empirical study of art spaces offers some guidance about how to engage with comparative urbanism as a framework for research. An overview of the chapters is provided.

scholarly journals Protein supplements consumption: a comparative study between the city centre and the suburbs of Palermo, Italy

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Antonino Bianco ◽  
Caterina Mammina ◽  
Ewan Thomas ◽  
Francesco Ciulla ◽  
Umberto Pupella ◽  
...  
Keyword(s):  
Comparative Study ◽  
City Centre ◽  
Protein Supplements ◽  
The City
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