نتایج جستجو برای: culex quinquefasciatus

تعداد نتایج: 4493  

2009
Farjana Nikkon Zahangir A. Saud Khaled Hossain Mst. Shahnaj Parvin M. Ekramul Haque

In the present study, the larvicidal activity of crude extracts from the stem and fruits, their fractions and fresh fruit juice of Duranta repens were assayed against the larvae of Culex quinquefasciatus. The highest larval mortality was found in chloroform soluble fraction of stem (LC50 = 10.75 ppm in 12 h) and ethanol extract of fruits (LC50 = 8.51 ppm 12 h) of Duranta repens against I instar...

Journal: :Japanese journal of infectious diseases 2004
Thekkevilayil George Thomas Sunder Rao Shiv Lal

Laboratory bioassay of the essential oil extracted from an indigenous plant, Ipomoea cairica, commonly known as 'Railway creeper', was carried out against the larvae of four vector species of mosquitoes in order to evaluate its mosquito larvicidal effect. Bioassay test revealed that the essential oil of the plant possess remarkable larvicidal properties as it could induce 100% mortality in the ...

Journal: :The Southeast Asian journal of tropical medicine and public health 2004
Preeti Sharma Lalit Mohan C N Srivastava

The objective of the present study is to determine the bioefficacy of different crude extracts of Ajuga remota against anopheline and culicine larvae. Larval susceptibility of crude carbon-tetrachloride, methanol and petroleum-ether extracts of Ajuga remota leaves was observed against the malaria vector, Anopheles stephensi and the filariasis vector, Culex quinquefasciatus. Among the extracts t...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1987
C Mouchès M Magnin J B Bergé M de Silvestri V Beyssat N Pasteur G P Georghiou

Antisera raised against the denatured polypeptide of two organophosphate-detoxifying esterases (B1 and A1) of Culex mosquitoes were used in an immunoblot method to quantify esterase production in resistant versus susceptible strains and to detect the presence of immunologically related proteins in other insects. It was demonstrated that esterase B1 of Culex quinquefasciatus and esterase A1 of C...

Journal: :Journal of bacteriology 2009
Steven L Salzberg Daniela Puiu Daniel D Sommer Vish Nene Norman H Lee

Wolbachia species are endosymbionts of a wide range of invertebrates, including mosquitoes, fruit flies, and nematodes. The wPip strains can cause cytoplasmic incompatibility in some strains of the Culex mosquito. Here we describe the genome sequence of a Wolbachia strain that was discovered in the whole-genome sequencing data for the mosquito Culex quinquefasciatus strain JHB.

2013
Larissa A. Martins Andréa C. Fogaça A. Tania Bijovsky Rebeca Carballar-Lejarazú Osvaldo Marinotti André F. Cardoso

Insect storage proteins accumulate at high levels during larval development of holometabolous insects. During metamorphosis they are degraded, supplying energy and amino acids for the completion of adult development. The genome of Culex quinquefasciatus contains eleven storage protein-coding genes. Their transcripts are more abundant in larvae than in pupae and in adults. In fact, only four of ...

Journal: :PloS one 2015
Donald A Yee Michael G Kaufman Nnaemeka F Ezeakacha

Allocation patterns of carbon and nitrogen in animals are influenced by food quality and quantity, as well as by inherent metabolic and physiological constraints within organisms. Whole body stoichiometry also may vary between the sexes who differ in development rates and reproductive allocation patterns. In aquatic containers, such as tree holes and tires, detrital inputs, which vary in amount...

Journal: :Journal of vector ecology : journal of the Society for Vector Ecology 2008
Ephantus J Muturi Joseph Mwangangi Josephat Shililu Benjamin G Jacob Charles Mbogo John Githure Robert J Novak

Studies were conducted between May and June, 2006 to investigate the environmental factors affecting the distribution of An. arabiensis Patton and Culex quinquefasciatus Say in Mwea, Kenya. The sampling unit comprised all non-paddy aquatic habitats and ten randomly selected paddies and canals located within a 200 m radius from the periphery of the study site. Thirteen physico-chemical variables...

2016
Fadila Amraoui Célestine Atyame-Nten Anubis Vega-Rúa Ricardo Lourenço-de-Oliveira Marie Vazeille Anna Bella Failloux

We report that two laboratory colonies of Culex quinquefasciatus and Culex pipiens mosquitoes were experimentally unable to transmit ZIKV either up to 21 days post an infectious blood meal or up to 14 days post intrathoracic inoculation. Infectious viral particles were detected in bodies, heads or saliva by a plaque forming unit assay on Vero cells. We therefore consider it unlikely that Culex ...

2017
Joan L. Kenney Hannah Romo Nisha K. Duggal Wen-Pin Tzeng Kristen L. Burkhalter Aaron C. Brault Harry M. Savage

AbstractIn late 2014, Zika virus (ZIKV; Flaviviridae, Flavivirus) emerged as a significant arboviral disease threat in the Western hemisphere. Aedes aegypti and Aedes albopictus have been considered the principal vectors of ZIKV in the New World due to viral isolation frequency and vector competence assessments. Limited reports of Culex transmission potential have highlighted the need for addit...

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