scholarly journals Ascogregarina taiwanensis infection in Aedes aegypti and Aedes albopictus in Santa Catarina, South Brazil

2017 ◽  
Vol 50 (2) ◽  
pp. 235-238
Author(s):  
Josiane Somariva Prophiro ◽  
Thiago Nunes Pereira ◽  
Joice Guilherme de Oliveira ◽  
Guilherme Werner Dandolini ◽  
Mario Antonio Navarro da Silva ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Santa Catarina ◽  
South Brazil ◽  
Ascogregarina Taiwanensis

scholarly journals Aedes aegypti and Aedes albopictus (Diptera: Culicidae): coexistence and susceptibility to temephos, in municipalities with occurrence of dengue and differentiated characteristics of urbanization

2011 ◽  
Vol 44 (3) ◽  
pp. 300-305 ◽  
Author(s):  
Josiane Somariva Prophiro ◽  
Onilda Santos Silva ◽  
Jonny Edward Duque Luna ◽  
Carla Fernanda Piccoli ◽  
Luiz Alberto Kanis ◽  
...  
Keyword(s):  
Data Analysis ◽  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
The State ◽  
Santa Catarina ◽  
Index Of Dispersion ◽  
Susceptibility Status

INTRODUCTION: The aim of the present study was to verify the coexistence between Aedes aegypti and Aedes albopictus populations in municipalities of the States of Paraná and Santa Catarina with different urbanization profiles where dengue occurs and evaluate their susceptibility to the organophosphate temephos. METHODS: The number of eggs per ovitrap were counted and incubated for hatching to identify the species. Data analysis of the populations was conducted to determine randomness and aggregation, using the variance-to-mean ratio (index of dispersion). Susceptibility to temephos was evaluated by estimation of the resistance ratios RR50 and RR95. Aedes aegypti samples were compared with the population Rockefeller and Aedes albopictus samples were compared with a population from the State of Santa Catarina and with the Rockefeller population. RESULTS: Coexistence between Aedes aegypti and Aedes albopictus and the aggregation of their eggs were observed at all the sites analyzed in the State of Paraná. CONCLUSIONS: All the Aedes aegypti populations from the State of Parana showed alteration in susceptibility status to the organophosphate temephos, revealing incipient resistance. Similarly, all the Aedes albopictus populations (States of Paraná and Santa Catarina) presented survival when exposed to the organophosphate temephos.

scholarly journals CULÍCIDOS DE RELEVANCIA MÉDICO-VETERINARIO DE JUTIAPA, GUATEMALA: 2009-2017

Biotempo ◽  
2018 ◽  
Vol 15 (1) ◽  
pp. 49-57
Author(s):  
Jaime Rodríguez-Flores ◽  
Milton Vinicio Monzón-Muñoz ◽  
Lorenzo Diéguez- Fernández ◽  
Pedro Marcelino Yax-Caxaj ◽  
José Iannacone
Keyword(s):  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Culex Quinquefasciatus ◽  
Santa Catarina

El objetivo de la investigación fue reportar las especies de culícidos registradas en el Departamento de Jutiapa, Guatemalaentre el 2009 y el 2017 asociadas con aspectos bioecológicos. Se realizó un estudio descriptivo retrospectivo mediante larevisión documental del registro de muestras del Laboratorio de Entomología de Jutiapa. Esta información es el resultadode las inspecciones realizadas dentro y en los alrededores de los domicilios tres veces al año en el 100% del universourbano y rural, lo que incluyó viviendas, terrenos baldíos y criaderos naturales. Siete géneros con 17 especies fueroncolectados. Aedes aegypti (Linnaeus, 1762), Aedes albopictus (Skuse, 1824) y Culex quinquefasciatus (Say, 1823), tuvieronlas mejores distribuciones. El Adelanto y Moyuta así como Agua Blanca, Atescatempa y Santa Catarina Mita fueron losmunicipios con las más altas variedades de especies. Se registró en el 2017 como nueva especie para el Departamento aUranotaenia sapphirina (Osten Sacken, 1868).

scholarly journals Ascogregarina Taiwanensis Interfere in the Performance of Aedes Albopictus and in the Susceptibility of Aedes Aegypti to Temephos and Azadirachta Indica Oil

2021 ◽  
Author(s):  
Josiane Somariva Prophiro ◽  
Thiago Nunes Pereira ◽  
Joice Guilherme de Oliveira ◽  
Felipe Allan Silva da Costa ◽  
Harry Luiz Pilz Júnior ◽  
...  
Keyword(s):  
Biological Control ◽  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Azadirachta Indica ◽  
Biological Control Agent ◽  
Negative Influence ◽  
Control Agent ◽  
Chemical Insecticide ◽  
Different Types ◽  
Ascogregarina Taiwanensis

Abstract Background: Aedes albopictus and Aedes aegypti are mosquitoes commonly adapted to tropical and subtropical regions. These vectors can transmit different types of arboviruses causing a serious concern to public health. New alternatives for the vector/arboviruses control are emerging, and in this sense the protozoan Ascogregarina taiwanensis may present potential as a biological control agent against these mosquitoes. Methods: To evaluate the effects of protozoan A. taiwanensis, mosquitoes were parasitized with a solution containing oocysts and evaluated to lifetime, fertility, fecundity for Ae. albopictus and for Ae. aegypti interaction with Azadirachta indica and Temephos. Results: In this work it was possible to observe the protozoan morphology in mosquitoes Ae. albopictus, as well its negative influence on mortality, 73% and non-parasitized was 44%. The number of eggs oviposited by parasitized females of Ae. albopictus was lower (3,490) than for the non-parasitized females (5,586). In addition, the hatchability and/or viability of these eggs were also lower for the parasitized females (63%) than the non-parasitized ones (74%). For Ae. aegypti mosquitoes, a synergism between the use of A. taiwanensis associated with a chemical insecticide and a botanical insecticide was observed. The results demonstrate that when Ae. aegypti larvae was parasitized by A. taiwanensis and exposed to the oil of Az. indica or to the organophosphate Temephos present a greater mortality. Conclusion: It was notable that A. taiwanensis can be a potential for biological control and adjuvant of insecticides. We also provide important information about the maintenance of A. taiwanensis in laboratory.

Distribution of Aedes aegypti and Aedes albopictus in different eco zones of Thiruvananthapuram city with special reference to dengue viremia in humans

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 223-230
Author(s):  
S. Sunil Kumar ◽  
D.A. Evans ◽  
K. Muthulakshmi ◽  
T. DilipKumar ◽  
R. Heera Pillai ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Dengue Shock Syndrome ◽  
Single Step ◽  
Equal Distribution ◽  
Distribution Study ◽  
Urban Zone ◽  
High Prevalence ◽  
Vector Management ◽  
Efficient Vector

Mosquito index study of three ecologically different ecozones of the Thiruvananthapuram district, Kerala showed sharp difference on the proportionate distribution of Aedes aegypti and Aedes albopictus. Human dengue viremia (HDV) was very high in those ecozones where A.aegypti density was high and HDV was low where A.albopictus was high. In a coastal zone of Thiruvananthapuram city, A. aegypti was the most abundant vector and in a hilly, arid suburban zone, A.albopictus was the abundant vector. In the urban zone both species of mosquitoes showed equal distribution. Study on the circulating serotypes in the serum of HDV by Single step single tube Multiplex PCR showed all the four serotypes viz DENV1, DENV2, DENV3 and DENV4 in patients of Thiruvananthapuram city, which indicated the possibility of Dengue Shock Syndrome, unless there is efficient vector management. Among the four dengue serotypes, Type 1 was the most abundant virus. Abundance of microhabitats in Thiruvananthapuram city, which support A. aegypti may be the reason for high prevalence of dengue fever in the urban zone.

A Simple PCR Assay for Discrimination of Dengue Vectors from Nsukka LGA, Nigeria

2020 ◽  
Vol 10 (1) ◽  
pp. 67-77
Author(s):  
Amos Watentena ◽  
Ikem Chris Okoye ◽  
Ikechukwu Eugene Onah ◽  
Onwude Cosmas Ogbonnaya ◽  
Emmanuel Ogudu
Keyword(s):  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Mosquito Species ◽  
Public Health Problem ◽  
Major Public Health Problem ◽  
Mosquito Vector ◽  
Aedes Mosquitoes ◽  
Allele Specific ◽  
Arboviral Diseases ◽  
Dengue Vectors

Mosquitoes of Aedes species are vectors of several arboviral diseases which continue to be a major public health problem in Nigeria. This study among other things, morphologically identified Aedes mosquitoes collected from Nsukka LGA and used an allele specific PCR amplification for discrimination of dengue vectors. Larval sampling, BG-sentinel traps and modified human landing catches were used for mosquito sampling in two selected autonomous communities of Nsukka LGA (Nsukka and Obimo). A total of 124 Aedes mosquitoes consisting of five (5) different species were collected from April to June, 2019 in a cross-sectional study that covered 126 households, under 76 distinct geographical coordinates. Larvae was mainly collected from plastic containers 73% (n=224), metallic containers 14% (n=43), earthen pots 9% (n=29) and used car tyres 3% (n=9), reared to adult stage 69.35% (n=86), and all mosquitoes were identified using standard morphological keys. Five (5) Aedes mosquito species were captured; Aedes aegypti 83(66.94%), Aedes albopictus 33(26.61%), Aedes simpsoni (4.48%), Aedes luteocephalus (≤1%) and Aedes vittatus (≤1%). Nsukka autonomous community had higher species diversity than Obimo. Allele specific amplification confirmed dengue vectors, Aedes aegypti and Aedes albopictus species on a 2% agarose gel. Since the most recent re-emergence of arboviral diseases is closely associated with Aedes species, findings of this study, therefore, give further evidence about the presence of potential arboviral vectors in Nigeria and describe the role of a simple PCR in discriminating some. Further entomological studies should integrate PCR assays in mosquito vector surveillance.

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