Field Competitiveness of Double Translocation Heterozygote Males of Aedes Aegypti (L.)

1976 ◽  
Vol 13 (2) ◽  
pp. 208-211 ◽  
Author(s):  
J. A. Seawright ◽  
P. E. Kaiser ◽  
N. L. Willis ◽  
D. A. Dame
Keyword(s):  
Aedes Aegypti ◽  
Translocation Heterozygote

Field trials of double translocation heterozygote males for genetic control of Aedes aegypti (L.) (Diptera: Culicidae)

1977 ◽  
Vol 67 (2) ◽  
pp. 313-324 ◽  
Author(s):  
J. L. Petersen ◽  
L. P. Lounibos ◽  
Nancy Lorimer
Keyword(s):  
Population Dynamics ◽  
Aedes Aegypti ◽  
Rainy Season ◽  
Population Decline ◽  
Field Trials ◽  
Chromosomal Translocations ◽  
Adult Mosquito ◽  
Sufficient Time ◽  
Relative Population ◽  
Translocation Heterozygote

AbstractFor nine weeks from 14 April to 13 June 1975 an average of over 500 double translocation heterozygote male Aedes aegypti (L.) were released daily into a village where the estimated adult mosquito population was 1200. The two purposes of this release were to suppress the A. aegypti population by sterility induced by chromosomal translocations and to assess the effect of rainy season conditions on the population dynamics of the indigenous and released mosquitoes. As a result of the releases, hatchabirity of eggs from females collected during landing-biting catches dropped from over 93% to 30–40%. For eight weeks following the termination of the releases, hatchability remained below 70% while that of the reference village averaged between 80 and 99% hatch. A relative population decline observed in the release village is not attributed solely to the effect of the releases, partly because it occurred before sufficient time had elapsed to allow induced sterility to build up in the field population.

SEX-LINKED TRANSLOCATIONS, SEMISTERILITY AND LINKAGE ALTERATIONS IN THE MOSQUITO AEDES AEGYPTI

1973 ◽  
Vol 15 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Satish C. Bhalla
Keyword(s):  
Aedes Aegypti ◽  
Secondary Constriction ◽  
Genetic Manipulation ◽  
Small Variation ◽  
Terminal Segment ◽  
Chromosome 3 ◽  
Specific Gene ◽  
Linkage Groups ◽  
Translocation Heterozygote ◽  
First Time

Seven sex-linked translocations were artificially induced and isolated in the mosquito Aedes aegypti. All translocations have passed through four generations. Each translocation heterozygote shows characteristic sterility with small variation. Egg hatches of the seven translocation heterozygotes ranged from 18% – 71%. Two translocations are TM type, i.e. linked to the M chromosome, and the remaining five are Tm type, i.e. linked to the m chromosome. Possibilities of using both types of translocation for genetic manipulation of field population are discussed. The three linkage groups (I,II,III) have been correlated to the three pairs of chromosomes (1, 2, and 3). For the first time in mosquitoes, translocations have been utilized to correlate a specific gene to a particular segment of a chromosome. The blt locus has been assigned to the small terminal segment distal to the secondary constriction on chromosome 3.

Disorter-double translocation heterozygote systems in Aedes aegypti

Genetica ◽  
1977 ◽  
Vol 47 (2) ◽  
pp. 117-123 ◽  
Author(s):  
S. G. Suguna ◽  
C. F. Curtis ◽  
S. J. Kazmi ◽  
K. R. P. Singh ◽  
R. K. Razdan ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Translocation Heterozygote

Aedes aegypti: Origin of a "New" Chromosome from a Double Translocation Heterozygote

Science ◽  
1970 ◽  
Vol 168 (3936) ◽  
pp. 1229-1230 ◽  
Author(s):  
P. T. McDonald ◽  
K. S. Rai
Keyword(s):  
Aedes Aegypti ◽  
Translocation Heterozygote

GAMBARAN INDEKS LARVA AEDES AEGYPTI DI BUFFER WILAYAH KERJA BANDARA SEPINGGAN BALIKPAPAN

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Abdurrakhman abdurrakhman Abdurrakhman
Keyword(s):  
Aedes Aegypti ◽  
Buffer Zone ◽  
Chi Square ◽  
Cross Sectional ◽  
Breeding Sites ◽  
Dengue Disease ◽  
Vector Borne Diseases ◽  
Transportation Equipment ◽  
Chi Square Test ◽  
Larvae Density

ABSTRACT : The House index and Container Index in the buffer area of ​​the working area of ​​Balikpapan Sepinggan Airport is still above 1%, so the potential for the spread of dengue disease. Mobilization of people, goods and transportation equipment will increasingly affect the transmission of disease in ports and airports, especially for vector-borne diseases. This study aims to analyze the risk factors associated with larvae density of Aedes aegypti and describe the larvae index in the buffer zone of the Sepinggan Balikpapan Airport This study was a descriptive study with a cross sectional design. The sample in this study was 121 houses with a proportionate stratified random sampling, the research location was in the buffer zone of Sepinggan Balikpapan Airport in November 2018. The variables studied were houses with positive larvae containers, breeding sites and PSN behavior and larvasidation. The data was analyzed using the chi square test. There was a relationship between houses with larvae positive Aedes aegypti, behavior of Mosquito Nest Eradication (PSN) and larvasidation with larvae density of Aedes aegypti but not for breeding sites (p = 0.00 and 95% CI = 0.64), and   (p = 0.00 and 95% CI = 0.34). The description of several Aedes aegypti larvae index, namely House Index (HI) = 57.02%, Container Index (CI) = 24.36%, Bruteau Index (BI) = 148.76, and Flick Free Numbers (ABJ) = 42.98 %. Houses with larvae of Aedes aegypti larvae and PSN and larvasidation behavior were associated with larvae density of Aedes aegypti. The index of HI, CI and BI larvae is of high value so there is a risk of DBD transmission

Detection of dengue virus in Aedes mosquitoes in Delhi, India

ENTOMON ◽  
2019 ◽  
Vol 44 (3) ◽  
pp. 213-218
Author(s):  
Suresh Chand Kaushik ◽  
Sukhvir Singh ◽  
Purnima Srivastava ◽  
R. Rajendran
Keyword(s):  
Early Intervention ◽  
Early Detection ◽  
Aedes Aegypti ◽  
Dengue Virus ◽  
Infection Rate ◽  
Transmission Season ◽  
Aedes Mosquitoes ◽  
Alternative Approach ◽  
Human Sera ◽  
Minimum Infection Rate

Detection of viruses in human sera particularly in endemic areas is cumbersome and laborious. Therefore, an alternative approach, Immuno-fluorescence assay (IFA) was performed to determine dengue virus (DENV) positivity in mosquitoes. A total of 1055 adult Aedes aegypti female mosquitoes were tested for IFA test against DENV. Minimum infection rate (MIR) for DENV was found higher during August to November 2016 ranging from 10.75 to 20.83. The average yearly MIR was about 6.64. Higher MIR for Ae. aegypti was found in Sarfabad, Noida (12.71) and Khoda Colony, Ghaziabad (11.90). Minimum MIR (4.67) was observed in Sanjay colony (Faridabad). The main contribution of this study resides in the development of a more suitable monitoring system for early detection of viral circulation and to prioritize early intervention in the non-transmission season.

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.

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