Mosquito Injection
Mosquito Injection - Related Videos
04:24
Injection of dsRNA into Female A. aegypti Mosquitos
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Cited by 8 •
2007
Reverse genetic approaches have proven extremely useful for determining which genes underly resistance to vector pathogens in mosquitoes. This video protocol illustrates a method used by the James lab to inject dsRNA into female A. aegypti mosquitoes, which harbor the dengue virus. The technique for calibrating injection needles, manipulating the injection setup, and injecting dsRNA into the thorax is illustrated.
06:54
Injection of An. stephensi Embryos to Generate Malaria-resistant Mosquitoes
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Cited by 9 •
2007
Anopheles stephensi mosquitoes are vectors for malaria inhabiting India and throughout Asia. This video demonstrates the technique for performing microinjections of this species with transgenes that will confer resistance to the malaria to the mosquito. Much of the methodology demonstrated in this video is applicable to microinjection techniques of other mosquito species.
02:36
Isolation of Mosquito-Associated Virus from Mosquito Homogenate
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2026
Source: Huang, D., et al. Mosquito-Associated Virus Isolation from Field-Collected Mosquitoes. J. Vis. Exp. (2022).This video demonstrates the step-by-step procedure for the in vitro isolation of mosquito-associated viruses from mosquito homogenates using fibroblast-like mammalian cells.
03:56
Mosquito Feeding Assay: A Method to Evaluate Test Compound Effects on Mortality and Fecundity of Adult Female Mosquitoes
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2025
This video demonstrates a blood-feeding assay to evaluate the mortality and fecundity of test compounds with novel modes of action on female mosquitoes. This technique helps in screening new classes of insecticides to kill the resistant population of mosquitoes and control disease spread.
17:39
Microinjection of A. aegypti Embryos to Obtain Transgenic Mosquitoes
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Cited by 56 •
2007
In this video, Nijole Jasinskiene demonstrates the methodology employed to generate transgenic Aedes aegypti mosquitoes, which are vectors for dengue fever. The techniques for correctly preparing microinjection needles, dessicating embryos, and performing microinjection are demonstrated.
FAQs
Targeting a selected tissue or internal compartment determines where the delivered substance acts within the mosquito. That spatial control can help connect an experimental material with a biological outcome, such as a developmental change, altered gene function, or an effect relevant to vector competence. The approach therefore supports more controlled interpretation of biological responses.
Material selection follows the biological question. Genetic constructs can support studies of gene function or genetically modified mosquitoes, whereas microorganisms, chemicals, or other experimental reagents can address different aims. Matching the delivered substance to the question allows investigators to examine development, vector competence, or host-pathogen interactions under controlled laboratory conditions.
The physical target changes with the specimen. An injection into a mosquito requires penetration of the cuticle, while embryonic work requires entry through the embryonic membrane. This distinction affects how the specimen is positioned and where the needle is directed, allowing the same general technique to be adapted for studies of both individual insects and development.
Immobilization keeps the specimen from moving while the fine needle is positioned, and microscopic guidance helps the operator direct that needle toward the intended surface, tissue, or compartment. Together, these controls support accurate delivery of a defined substance and reduce uncertainty about where it enters, which is essential for interpreting experimental effects.
A basic workflow begins by immobilizing the mosquito or embryo, placing it under microscopic observation, and selecting the intended entry point. A fine needle then penetrates the cuticle or embryonic membrane, after which the defined substance is delivered into the selected location. The workflow links physical access with controlled placement of the experimental material.
This technique supports several areas of mosquito biology, including development, gene function, vector competence, and host-pathogen interactions. It also contributes to work on genetically modified mosquitoes and strategies for studying or controlling disease transmission. Its value comes from introducing experimental materials in a controlled setting so biological responses can be examined directly.