Drosophila Preparation
Drosophila Preparation - Related Videos
08:14
Drosophila melanogaster Embryo and Larva Harvesting and Preparation
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2023
Drosophila melanogaster embryos and larvae are easy to manipulate and develop rapidly by mechanisms that are analogous to other organisms, including mammals. For these reasons, many researchers utilize fly embryos and larvae to answer questions in diverse fields ranging from behavioral to developmental biology. Prior to experimentation, however, the embryos and larvae must first be collected. This video will first demonstrate how "egg-laying cups" are used to collect Drosophila embryos on agar...
09:39
Preparation of Drosophila S2 cells for Light Microscopy
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Cited by 24 •
2010
Drosophila Schneider (S2) cells are an increasingly popular system for the discovery and functional analysis of genes. Our goal is to describe some of the microscopic techniques that make S2 cells such an increasingly important experimental system.
13:07
Preparation of Neuronal Cultures from Midgastrula Stage Drosophila Embryos
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Cited by 8 •
2007
This video demonstrates the preparation of primary neuronal cultures from midgastrula stage Drosophila embryos. Views of live cultures show cells 1 hour after plating and differentiated neurons after 2 days of growth in a bicarbonate-based defined medium. The neurons are electrically excitable and form synaptic connections.
06:37
Preparation of Drosophila Polytene Chromosome Squashes for Antibody Labeling
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Cited by 28 •
2010
This video protocol illustrates the squash technique used in the Johansen laboratory to prepare Drosophila polytene chromosomes for antibody labeling.
07:49
Preparation of Adult Drosophila Eyes for Thin Sectioning and Microscopic Analysis
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Cited by 21 •
2011
A standard approach to prepare adult Drosophila eyes for semi-thin sectioning and light microscopic analysis is presented here. The protocol can be used for gross morphological analysis of eye defects, or with the indicated adjustments can be used to determine genetic requirements of genes in specific cell types of the eye (e.g. clonal analysis of photoreceptors) or for electron microscopic analysis.
FAQs
Both approaches temporarily immobilize flies, making it possible to collect, inspect, sort, and transfer them without relying on continuous movement. The choice of carbon dioxide or brief cooling is part of controlled handling, because preparation should limit stress and injury. Consistent immobilization therefore helps researchers obtain specimens suitable for later experimental comparisons.
These characteristics determine which flies belong in a particular experiment or comparison. Sorting by strain can distinguish genetic backgrounds, while separating sex, age, or visible phenotype helps organize biologically relevant groups. Keeping these categories distinct reduces unwanted variation and allows observations from development, genetics, physiology, or behavior studies to be interpreted more consistently.
Handling conditions can influence the quality and comparability of experimental results. Stress or injury may create differences between flies that are unrelated to the biological question, while inconsistent preparation can make groups harder to compare. Careful immobilization, sorting, and transfer help preserve specimens in a more controlled state before measurements, imaging, crosses, or behavioral assays.
A typical workflow begins by immobilizing the flies with carbon dioxide or brief cooling. The immobilized animals are then examined and sorted according to strain, sex, age, or visible phenotype. Finally, they are transferred to experimental containers or microscope slides appropriate for the planned work. This sequence organizes specimens while limiting unnecessary handling.
The destination depends on the planned experiment. Experimental containers provide a setup for work such as genetic crosses or behavioral assays, whereas microscope slides support anatomical imaging and direct visual examination. Transferring flies into the appropriate format after sorting ensures that the preparation matches the measurement or observation required by the study.
Prepared flies can support studies of development, genetics, physiology, and behavior, as well as genetic crosses and anatomical imaging. They also provide a model for examining conserved biological processes and disease mechanisms. The value of the preparation lies in producing organized specimens that can be placed into different experimental formats for these complementary research applications.