Medaka Oryzias Latipes
Medaka Oryzias Latipes - Related Videos
05:31
Gonadectomy and Blood Sampling Procedures in the Small Size Teleost Model Japanese Medaka (Oryzias latipes)
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Cited by 10 •
2020
The article describes a quick protocol to gonadectomize and sample blood from the small teleost fish, using Japanese medaka (Oryzias latipes) as a model, to investigate the role of sex steroids in animal physiology.
06:49
Sperm Collection and Computer-Assisted Sperm Analysis in the Teleost Model Japanese Medaka (Oryzias latipes)
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Cited by 3 •
2022
This article describes two quick and efficient methods for collecting sperm from the small model fish medaka (Oryzias latipes), as well as a protocol for reliably assessing sperm quality using computer-assisted sperm analysis (CASA).
06:29
Salinity-dependent Toxicity Assay of Silver Nanocolloids Using Medaka Eggs
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Cited by 2 •
2016
Embryonic stages are the most susceptible to xenobiotics. Although chemical toxicity depends on salinity, no method exists to test the salinity dependence of toxicity to aquatic organisms. Here, we describe a new and high-throughput method for determining the salinity dependence of toxicity to aquatic embryos.
08:53
Drug Treatment and In Vivo Imaging of Osteoblast-Osteoclast Interactions in a Medaka Fish Osteoporosis Model
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Cited by 10 •
2017
Small laboratory fish have become popular models for bone research on the mechanisms underlying human bone disorders and for the screening of bone-modulating drugs. In this report, we describe a protocol to assess the effect of alendronate on bone cells in medaka larvae with osteoporotic lesions.
07:25
Microinjection of Medaka Embryos for use as a Model Genetic Organism
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Cited by 26 •
2010
Medaka and zebrafish are complementary for genetic dissection of vertebrate genome functions. This protocol highlights the key points for successful microinjection into medaka embryos, an important technique for embryological and genetic analysis using medaka and zebrafish in a laboratory.
FAQs
External fertilization gives researchers access to embryos before nervous-system formation is complete. Because development proceeds through defined stages and embryos are transparent, investigators can observe neural development directly and apply gene-function manipulations at selected points. This timing helps connect early cellular events with later neuronal differentiation, circuit organization, and behavioral outcomes.
Fluorescent reporters make selected cells or biological activity visible within living fish. In neuroscience experiments, they can help associate particular cells or genes with neuronal differentiation, circuit activity, or behavior. This creates a bridge between microscopic changes in the nervous system and measurable organism-level responses, supporting analysis of how neural circuits develop and operate.
These approaches allow investigators to alter gene function or mark defined biological components, then examine resulting neural and behavioral effects. The accessible genome supports experiments that connect candidate genes with neuronal differentiation, circuit activity, and neurological disease mechanisms. Combining genetic manipulation with fluorescent visualization strengthens causal interpretation rather than relying only on anatomical observation.
A finding observed during early development may reflect neural-system formation, whereas a later result may relate more directly to mature circuit function, behavior, or disease-associated changes. Medaka’s rapid development and defined developmental stages allow researchers to separate these possibilities. Recording when a manipulation or observation occurs is therefore essential for interpreting its neurological significance.
A study can begin by breeding fish and collecting externally fertilized embryos, followed by observation at selected developmental stages. Researchers may then use transgenic lines, fluorescent reporters, or genome editing to examine cells and gene function. Subsequent measurements can connect neural development or circuit activity with behavior, disease-related phenotypes, or other neurological outcomes.
Medaka supports investigations of brain development, sensory processing, neural circuits, behavior, regeneration, and stress responses. It can also model aspects of neurological disease and help evaluate candidate therapeutics. These applications are strengthened by the ability to examine neural changes alongside behavior, allowing researchers to relate cellular or genetic mechanisms to functional consequences.
Its compact size and scalable breeding make medaka useful when experiments require multiple animals or comparisons across genetic and developmental conditions. Researchers can combine that scale with accessible genetic tools and visual analysis of nervous-system processes. This supports comparative biology while preserving links among genes, neural cells, circuits, behavior, and disease-related findings.