scholarly journals Effects of Different Pyrethroids on Landing Behavior of FemaleAedes aegypti,Anopheles quadrimaculatus, andCulex quinquefasciatusMosquitoes (Diptera: Culicidae)

2009 ◽  
Vol 46 (2) ◽  
pp. 292-306 ◽  
Author(s):  
Miriam F. Cooperband ◽  
Sandra A. Allan
Keyword(s):  
Anopheles Quadrimaculatus ◽  
Landing Behavior

Chromosome polymorphism in natural populations of Anopheles quadrimaculatus Say species A and B

Genome ◽  
1988 ◽  
Vol 30 (2) ◽  
pp. 138-146 ◽  
Author(s):  
P. E. Kaiser ◽  
J. A. Seawright ◽  
B. K. Birky
Keyword(s):  
X Chromosome ◽  
Southeastern United States ◽  
Polytene Chromosomes ◽  
Natural Populations ◽  
Chromosome 3 ◽  
Chromosome Polymorphism ◽  
Chromosome 2 ◽  
Anopheles Quadrimaculatus ◽  
The Right ◽  
Maculipennis Complex

Ovarian polytene chromosomes from eight populations of Anopheles quadrimaculatus in the southeastern United States were observed for chromosomal polymorphisms. Two sibling species, species A and B, each with intraspecific inversions, were distinguished. Species A correlates with the previously published standard maps for salivary gland and ovarian nurse-cell polytene chromosomes. Species A was found at all eight collection sites, and five of these populations also contained species B. Three inversions on the right arm of chromosome 3 were observed in species A. Species B contained a fixed inversion on the X chromosome, one fixed and one floating inversion on the left arm of chromosome 2, and one fixed and one floating inversion on the right arm of chromosome 3. The fixed inversion on the X chromosome makes this the best diagnostic chromosome for distinguishing species A and B. An unusual dimorphism in the left arm of chromosome 3, found in both species A and B, contained two inversions. The heterokaryotypes, as well as two distinct homokaryotypes, were seen in all of the field populations. Intraspecific clinal variations in the frequencies of the species A inversions were noted. The Florida populations were practically devoid of inversions, the Georgia and Alabama populations contained some inversions, and the Arkansas population was mostly homozygous for two of the inversions. The phylogenetic relationships of species A and B to the Maculipennis complex (Nearctic) are discussed.Key words: Anopheles, inversion, populations, chromosome polymorphism, phylogenetics.

Riceland Mosquito Management Practices for Anopheles quadrimaculatus Larvae

2008 ◽  
Vol 24 (4) ◽  
pp. 534-537 ◽  
Author(s):  
R. A. Allen ◽  
W. W. Wilkes ◽  
C. N. Lewis ◽  
M. V. Meisch
Keyword(s):  
Management Practices ◽  
Anopheles Quadrimaculatus ◽  
Mosquito Management

scholarly journals Exploratory Studies on Gamma Radiation for the Sterilization and Control of Anopheles quadrimaculatus

1959 ◽  
Vol 52 (5) ◽  
pp. 868-870 ◽  
Author(s):  
A. N. Davis ◽  
J. B. Gahan ◽  
Donald F. Weidhaas ◽  
Carroll N. Smith
Keyword(s):  
Gamma Radiation ◽  
Anopheles Quadrimaculatus ◽  
And Control

Culicinomyces clavisporus. [Descriptions of Fungi and Bacteria].

1979 ◽  
Author(s):  
A. H. S. Onions
Keyword(s):  
North Carolina ◽  
Geographical Distribution ◽  
Mosquito Larvae ◽  
Anopheles Quadrimaculatus ◽  
The Common ◽  
Sydney Australia

Abstract A description is provided for Culicinomyces clavisporus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Anopheles quadrimaculatus, the common malarial mosquito; A. amictus; and also attacks chironomids and other mosquitoes. DISEASE: Reported as attacking mosquito larvae (Sweeney et al., 1973; Couch, 1974). GEOGRAPHICAL DISTRIBUTION: Recorded from North Carolina, USA (Couch, 1974) and Sydney, Australia (Sweeney, 1973).

scholarly journals Arthropod transmission of rabbit fibromatosis (Shope)

1959 ◽  
Vol 57 (1) ◽  
pp. 1-30 ◽  
Author(s):  
Herbert T. Dalmat
Keyword(s):  
Aedes Aegypti ◽  
Culex Pipiens ◽  
Rhodnius Prolixus ◽  
Triatoma Infestans ◽  
Cimex Lectularius ◽  
Virus Titre ◽  
Virus Suspension ◽  
Anopheles Quadrimaculatus ◽  
Domestic Rabbits ◽  
Reduviid Bugs

The mosquitoes Aedes aegypti, A. triseriatus, Culex pipiens, C. quinquefasciatus, and Anopheles quadrimaculatus were all found to be efficient experimental vectors of Shope's virus-induced fibromas of cottontail rabbits, transmitting the virus during interrupted feedings as well as after long intervals from an infective meal. The reduviid bugs, Triatoma infestans, T. phyllosoma pallidipennis and Rhodnius prolixus, and the bedbug, Cimex lectularius, were also capable of transmitting fibroma by interrupted or delayed feeding.Evidence from various types of experiments indicated that arthropod transmission is mechanical, the virus being extremely stable in the insects. Some experiments did indicate the possibility of virus proliferation. Although mosquitoes did seem to serve as ‘flying pins’ when transmitting virus by interrupted feeding, they certainly were distinctive in that they maintained their ability to transmit for very long periods of time. To transmit fibromas, arthropods actually must draw virus up between the stylets of the mouthparts; mosquitoes were unable to transmit by feeding through skin moistened with a suspension of fibroma virus or by feeding subsequent to having their mouthparts painted with a virus suspension.While cottontail tumours at peak virus titres are always infective for suitable insects, the fibromas of adult domestic rabbits generally are not infective, even though the virus titre is equivalent. However, the tumours of suckling domestic rabbits do become infective for insects.

Ultrastructural changes in the cell surface of Coelomomyces punctatus infecting mosquito larvae

1976 ◽  
Vol 54 (13) ◽  
pp. 1419-1437 ◽  
Author(s):  
Martha J. Powell
Keyword(s):  
Endoplasmic Reticulum ◽  
Plasma Membrane ◽  
Granular Material ◽  
Fat Body ◽  
Vegetative Stage ◽  
Ultrastructural Changes ◽  
Anopheles Quadrimaculatus ◽  
Advanced Stages ◽  
Hyphal Bodies ◽  
Hyphal Body

As the fungus Coelomomyces punctatus develops in the coelomic cavity of the mosquito Anopheles quadrimaculatus, the conformation of the plasma membrane and extracellular coat of the fungus changes markedly. The vegetative stage was surrounded by a granular and fibrillar extracellular coat which reacted positively in the silver methenamine procedure for the localization of polysaccharides. Numerous simple, branched or contorted cytoplasmic protuberances covered the irregularly shaped hyphal bodies. The surface of the hyphal body adjacent to the fat body of the mosquito had occasional involutions of the plasma membrane sheathed by cisternae of endoplasmic reticulum. In contrast with these hyphal bodies, cytoplasmic protuberances were spaced at wide intervals along filamentous hyphae. Aborting thalli were contorted and deeply lobed. The plasma membrane was smooth, and cytoplasmic protuberances were absent on other hyphae and hyphal bodies, particularly at advanced stages of infection. Instead unattached vesicles, morphologically similar to the protuberances found on some thalli, were embedded in granular material clustered around the smooth plasma membrane of these thalli. Mosquito hemocytes appeared to engulf these vesicles and granular material. As the vegetative stage was transformed into the reproductive stage, a newly formed, compact extracellular layer surrounded the sporangial initial. Later, a darkly staining wall appeared around the resting sporangium. Cisternae of endoplasmic reticulum consistently subtended thin areas in this pitted wall.

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