Mortality And Reproductive Dynamics of Aedes aegypti (Diptera: Culicidae) Fed Human Blood

2007 ◽  
Vol 7 (1) ◽  
pp. 86-98 ◽  
Author(s):  
Linda M. Styer ◽  
Sharon L. Minnick ◽  
Anna K. Sun ◽  
Thomas W. Scott
Keyword(s):  
Aedes Aegypti ◽  
Human Blood

scholarly journals Effects of Alternative Blood Sources on Wolbachia Infected Aedes aegypti Females within and across Generations

Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 140 ◽  
Author(s):  
Véronique Paris ◽  
Ellen Cottingham ◽  
Perran Ross ◽  
Jason Axford ◽  
Ary Hoffmann
Keyword(s):  
Aedes Aegypti ◽  
Human Blood ◽  
Mass Rearing ◽  
Egg Hatch ◽  
Mass Release ◽  
Deliberate Release ◽  
Blood Source ◽  
Wolbachia Density ◽  
Infected Line ◽  
Strong Adaptation

Wolbachia bacteria have been identified as a tool for reducing the transmission of arboviruses transmitted by Aedes aegypti. Research groups around the world are now mass rearing Wolbachia-infected Ae. aegypti for deliberate release. We investigated the fitness impact of a crucial element of mass rearing: the blood meal required by female Ae. aegypti to lay eggs. Although Ae. aegypti almost exclusively feed on human blood, it is often difficult to use human blood in disease-endemic settings. When females were fed on sheep or pig blood rather than human blood, egg hatch rates decreased in all three lines tested (uninfected, or infected by wMel, or wAlbB Wolbachia). This finding was particularly pronounced when fed on sheep blood, although fecundity was not affected. Some of these effects persisted after an additional generation on human blood. Attempts to keep populations on sheep and pig blood sources only partly succeeded, suggesting that strong adaptation is required to develop a stably infected line on an alternative blood source. There was a decrease in Wolbachia density when Ae. aegypti were fed on non-human blood sources. Density increased in lines kept for multiple generations on the alternate sources but was still reduced relative to lines kept on human blood. These findings suggest that sheep and pig blood will entail a cost when used for maintaining Wolbachia-infected Ae. aegypti. These costs should be taken into account when planning mass release programs.

scholarly journals The Rate of Digestion of, Human Blood by Certain Species of Mosquitoes

1956 ◽  
Vol 9 (1) ◽  
pp. 125 ◽  
Author(s):  
AK O’gower
Keyword(s):  
Aedes Aegypti ◽  
Human Blood ◽  
Mosquito Species ◽  
Temperature And Humidity

The rate of ciigesl;iol1 of human blood was invcsLigated at 4-hourly intorval" by tho I'reeipitin and benzidine tests for tho mosquito species .Aedes aegypti, A. concolor, A. noto8oriptu8, A. soutellaris, and Culea., fllliymis. In an enviroWllent ill which temperature and humidity w('["o oonstant and in whioh thoro were equal periods of light and darkness, the mie of digestion ranged from :11 hI' for 8CUtellm'is to ·Hl hI' for A. COil color.

Human Blood Feeding by Aedes aegypti (Diptera: Culicidae) in the Florida Keys and a Review of the Literature

2020 ◽  
Vol 57 (5) ◽  
pp. 1640-1647
Author(s):  
Catherine A Pruszynski ◽  
Tanise Stenn ◽  
Carolina Acevedo ◽  
Andrea L Leal ◽  
Nathan D Burkett-Cadena
Keyword(s):  
United States ◽  
Aedes Aegypti ◽  
Human Blood ◽  
Florida Keys ◽  
Blood Feeding ◽  
The United States ◽  
High Rate ◽  
Surveillance Program ◽  
Key West ◽  
Local Transmission

Abstract Aedes aegypti L. is considered to have a proclivity for feeding on human blood even when other hosts are available. However, few studies have demonstrated host use by this mosquito in the continental United States, where local transmission of dengue, Zika, and chikungunya viruses has been recently documented. This study investigated the bloodmeal sources of female Ae. aegypti in the subtropical city of Key West and the surrounding county in Florida with the goal of identifying preferred hosts. Blood-engorged Ae. aegypti mosquitoes were collected from BG Sentinel traps used as part of a routine surveillance program in the Florida Keys (Monroe County, Florida). Bloodmeal samples were analyzed using PCR assays, sequencing, and comparison with reference sequences in GenBank. Aedes aegypti females from Key West fed predominantly on humans (79.6%) and did not differ statistically from females collected from the rest of the Florida Keys (69.5%). Culex quinquefasciatus Say (Diptera: Culicidae), considered a host generalist, was collected and analyzed from the same sites for comparative purposes. Females of Cx. quinquefasciatus fed predominantly (70.7%) on birds and nonhuman mammals in the Florida Keys, corroborating the validity of molecular assay breadth and demonstrating that given the same group of available hosts Ae. aegypti selects humans. Our results indicated that Ae. aegypti has a high rate of human-biting in a subtropical area within the United States, supporting its role in recent local transmission of dengue and other viruses.

scholarly journals The type of blood used to feed Aedes aegypti females affects their cuticular and internal free fatty acid (FFA) profiles

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0251100
Author(s):  
Agata Kaczmarek ◽  
Anna Katarzyna Wrońska ◽  
Mieczysława Irena Boguś ◽  
Michalina Kazek ◽  
Aleksandra Gliniewicz ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Human Blood ◽  
Laboratory Culture ◽  
Laboratory Model ◽  
Sheep Blood ◽  
Laboratory Conditions ◽  
Kolmogorov Smirnov ◽  
Primary Vector ◽  
Student’S T ◽  
The Individual

Aedes aegypti, the primary vector of various arthropod-borne viral (arboviral) diseases such as dengue and Zika, is a popular laboratory model in vector biology. However, its maintenance in laboratory conditions is difficult, mostly because the females require blood meals to complete oogenesis, which is often provided as sheep blood. The outermost layer of the mosquito cuticle is consists of lipids which protects against numerous entomopathogens, prevents desiccation and plays an essential role in signalling processes. The aim of this work was to determine how the replacement of human blood with sheep blood affects the cuticular and internal FFA profiles of mosquitoes reared in laboratory culture. The individual FFAs present in cuticular and internal extracts from mosquito were identified and quantified by GC–MS method. The normality of their distribution was checked using the Kolmogorov-Smirnov test and the Student’s t-test was used to compare them. GC-MS analysis revealed similar numbers of internal and cuticular FFAs in the female mosquitoes fed sheep blood by membrane (MFSB) and naturally fed human blood (NFHB), however MFSB group demonstrated 3.1 times greater FFA concentrations in the cuticular fraction and 1.4 times the internal fraction than the NFHB group. In the MFSB group, FFA concentration was 1.6 times higher in the cuticular than the internal fraction, while for NFHB, FFA concentration was 1.3 times lower in the cuticular than the internal fraction. The concentration of C18:3 acid was 223 times higher in the internal fraction than the cuticle in the MHSB group but was absent in the NFHB group. MFSB mosquito demonstrate different FFA profiles to wild mosquitoes, which might influence their fertility and the results of vital processes studied under laboratory conditions. The membrane method of feeding mosquitoes is popular, but our research indicates significant differences in the FFA profiles of MFSB and NFHB. Such changes in FFA profile might influence female fertility, as well as other vital processes studied in laboratory conditions, such as the response to pesticides. Our work indicates that sheep blood has potential shortcomings as a substitute feed for human blood, as its use in laboratory studies may yield different results to those demonstrated by free-living mosquitoes.

A Fitness Advantage for Aedes aegypti and the Viruses It Transmits When Females Feed Only on Human Blood

1997 ◽  
Vol 57 (2) ◽  
pp. 235-239 ◽  
Author(s):  
Thomas W. Scott ◽  
John D. Edman ◽  
Pattamaporn Kittayapong ◽  
Jonathan F. Day ◽  
Amara Naksathit
Keyword(s):  
Aedes Aegypti ◽  
Human Blood ◽  
Fitness Advantage

Equipment and Method employed in breeding Aëdes aegypti, L., for the biological Assay of Insecticides

1945 ◽  
Vol 35 (3) ◽  
pp. 227-230 ◽  
Author(s):  
W. A. L. David ◽  
P. Bracey ◽  
A. Harvey
Keyword(s):  
Aedes Aegypti ◽  
Medical Research ◽  
Human Blood ◽  
Research Council ◽  
Medical Research Council ◽  
Biological Assay ◽  
Larval Food ◽  
Large Numbers

A method of rearing large numbers of Aëdes aegypti for the biological assay of insecticides is described. The larval food found to be most satisfactory was a breadcrumb infusion. Blood is necessary for oviposition (human blood is best), but the main batches of insects destined for spraying are fed on water, sugar and raisins.This work is being carried out under a grant from the Medical Research Council. The authors are grateful to Prof. P. A. Buxton and Dr. V. B. Wigglesworth for advice and encouragement.

Digestion of the human blood-meal by the mosquito, Aedes aegypti

1971 ◽  
Vol 17 (12) ◽  
pp. 2469-2473 ◽  
Author(s):  
Donald W. Thayer ◽  
Levon A. Terzian ◽  
Paul A. Price
Keyword(s):  
Aedes Aegypti ◽  
Human Blood ◽  
Blood Meal
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