Larval Zebrafish Dissection
Larval Zebrafish Dissection - Related Videos
10:43
Dissection of Larval Zebrafish Gonadal Tissue
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Cited by 6 •
2017
Here, we present a protocol for isolating gonadal tissue of larval zebrafish, which will facilitate investigations of zebrafish sex differentiation and maintenance.
06:43
Heart Dissection in Larval, Juvenile and Adult Zebrafish, Danio rerio
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Cited by 19 •
2011
A clear, standardized method for dissection and isolation of the zebrafish heart at multiple developmental stages are described. Annotation and quantification techniques are also discussed.
06:00
Forebrain Electrophysiological Recording in Larval Zebrafish
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Cited by 55 •
2013
A simple method to record extracellular field potentials in the larval zebrafish forebrain is described. The method provides a robust in vivo read-out of seizure-like activity. This technique can be used with genetically modified zebrafish larvae carrying epilepsy-related genes or seizures evoked by administration of convulsant drugs.
06:29
Dissection of Larval CNS in Drosophila Melanogaster
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Cited by 17 •
2006
In this article we demonstrate how to dissect the central nervous system from third instar Drosophila larvae.
02:26
Development of a Zebrafish Larval Infection Model Using Microgavage
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2026
Source: Li, J., et al. Development of a Larval Zebrafish Infection Model for Clostridioides difficile. J. Vis. Exp. (2020).This video demonstrates the microgavage procedure, where an anesthetized zebrafish larva is immobilized in agarose and orally injected with a pathogenic bacterium using a tracer-guided needle. The non-invasive delivery mimics natural infection, enabling analysis of bacterial replication, toxin release, and intestinal epithelial damage.
FAQs
Anesthesia supports controlled handling of the larva, while stereomicroscope positioning provides the magnified view needed to identify anatomical structures and guide microsurgical manipulation. Together, these conditions help researchers target selected tissues rather than disturbing the entire specimen. Careful positioning also supports preservation of structures for later imaging, staining, or molecular analysis.
Fine instruments allow researchers to remove or separate selected tissues while preserving surrounding structures. This selectivity is important because the resulting specimen can retain anatomical relationships that support interpretation of developing organs and tissues. Preserved structures may then be examined through imaging, staining, or molecular analysis, connecting the dissection step with several kinds of biological investigation.
The method links whole-animal observations with cellular and tissue-level analysis. Researchers can examine how visible anatomical organization relates to developing organs, tissues, and underlying biological processes without limiting the investigation to only one scale. This connection is especially relevant when studying development, organ formation, regeneration, or disease models in a rapidly developing organism.
A typical workflow begins by anesthetizing the larvae and positioning them under a stereomicroscope. Researchers then use fine instruments to remove or separate selected tissues, taking care to preserve structures needed for later study. The prepared material can subsequently undergo imaging, staining, or molecular analysis, depending on the biological question and the information required.
Dissected larvae or preserved tissues can be prepared for imaging, staining, or molecular analysis. Imaging reveals anatomical organization, staining supports examination of selected structures, and molecular analysis provides another way to investigate the tissue after microsurgical preparation. Using these complementary outcomes, researchers can relate physical anatomy to developmental or physiological processes in the larva.
Larval zebrafish dissection is useful when researchers need to examine organ formation, developing tissues, regeneration, or disease models at close anatomical resolution. The larvae develop rapidly and are small enough for microsurgical study, allowing investigations to connect changes visible in the whole animal with observations at tissue and cellular levels. This supports analysis of developmental and physiological organization.