Local Variation in Blood Feeding by Aedes Triseriatus and Aedes Hendersoni (Diptera: Culicidae)1

Blood feeding insects have to rely on the protein content of mammalian blood to insure reproduction. A substantial quantity of protein is provided by hemoglobin present in erythrocytes. Access to hemoglobin is accomplished only via erythrocyte lysis. It has been shown that midgut homogenates from the blood feeding stable fly, Stomoxys calcitrans, contain free fatty acids and it was proposed that these detergent-like compounds play a major role as hemolysins in the digestive physiology of this species. More recently sphingomyelinase activity was detected in midgut preparations of this fly, which would provide a potential tool for the enzymatic cleavage of the erythrocyte's membrane sphingomyelin. The action of specific hemolytic factors should affect the erythrocyte's morphology. The shape of bovine erythrocytes undergoing in vitro hemolysis by crude midgut homogenates from the stable fly was examined by scanning and transmission electron microscopy.

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Phytochemical screening for identification of bioactive compounds of Lantana camara Linn. (Verbenaceae) responsible for larvicidal action against Aedes triseriatus Say, 1823 (Diptera : Culicidae)

ENTOMON ◽

10.33307/entomon.v44i2.438 ◽

2019 ◽

Vol 44 (2) ◽

pp. 117-126

Author(s):

Rhitayu Chakraborti ◽

Probir Kumar Bandyopadhyay

Keyword(s):

Ethyl Acetate ◽

Bioactive Compounds ◽

Active Ingredient ◽

Crude Extract ◽

Ethyl Acetate Extract ◽

Lantana Camara ◽

Mosquito Larvae ◽

Aedes Triseriatus ◽

Phytochemical Screening ◽

Lc50 Value

Study to assess the larvicidal property of Lantana camara leaves against Aedes triseriatus larvae found that the ethyl acetate extract had profound larvicidal action with the crude extract having a LC50 value of 409.831ppm. GC-MS analysis of the ethyl acetate extract confirmed the presence of twenty-one compounds out of which beta-caryophyllene covered the highest percentage of the chromatogram area. Further tests with beta-caryophyllene against the mosquito larvae proved it to be the active ingredient of L. Camara with a LC50 value of 104.243ppm.

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Differential gene expression profiling induced by blood feeding in the biting midge vectorCulicoides imicola

10.1603/ice.2016.117657 ◽

2016 ◽

Author(s):

Wilma C. Fick

Keyword(s):

Gene Expression ◽

Gene Expression Profiling ◽

Differential Gene Expression ◽

Expression Profiling ◽

Blood Feeding ◽

Biting Midge ◽

Differential Gene

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Protein structure and the mechanism of salivary components from blood feeding arthropods

10.1603/ice.2016.93265 ◽

2016 ◽

Author(s):

John F. Andersen

Keyword(s):

Protein Structure ◽

Blood Feeding

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Medical Therapeutics Derived from Leeches (Phy. Annelida; Cl. Hirudinea)

MacEwan University Student eJournal ◽

10.31542/j.muse.297 ◽

2016 ◽

Vol 3 (1) ◽

Cited By ~ 1

Author(s):

Christopher Everett Warren Clarke

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Heart Attack ◽

Blood Feeding ◽

Vascular Trauma ◽

Biological Molecules ◽

Future Treatment ◽

Medical Therapeutics

Of all blood feeding invertebrates, few are more notorious than leeches. Throughout their existence as ectoparasites, leeches have evolved to release biological molecules in their saliva that act to counter the responses of the prey’s body to vascular trauma. Inadvertently, these very molecules have been used by humans for centuries for medicinal purposes; however, it is only recently that their cellular action has been elucidated. As a result, these compounds have been isolated and mass produced to treat a wide variety of conditions ranging from heart attack to Alzheimer’s disease and continued work suggests that these isolates will be an important future treatment for metastasis.

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Innovative Thinking on the Relationship between the Provision of Local Services and Inequality in Israel

Israeli Studies Review ◽

10.3167/isr.2020.350303 ◽

2020 ◽

Vol 35 (3) ◽

pp. 31-51

Author(s):

Yoram Ida ◽

Amir Hefetz ◽

Assaf Meydani ◽

Gila Menahem ◽

Elad Cohen

Keyword(s):

Implementation Process ◽

Local Variation ◽

Two Dimensions ◽

National Standard ◽

Local Authorities ◽

Innovative Methodology ◽

Local Services ◽

Innovative Thinking ◽

Mandatory Service ◽

The Relationship

What innovative policy tools can be introduced so that the provision of local services will mitigate inequality among residents of different localities? Based on the ‘new localism’ approach, this article examines one such tool—a mandatory national standard for services provided by local authorities (a ‘service basket’)—and suggests that the implementation process should consider local variation and autonomy. The novelty of our approach lies in including both objective and normative considerations in the methodological instrument that we developed to capture these two dimensions. This innovative methodology also enabled us to estimate existing service gaps among local authorities and the burdens some will face upon instituting a mandatory service basket.

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