Larval Development
Larval Development - Related Videos
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.
08:29
Drosophila Larval IHC
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2023
Immunohistochemistry (IHC) is a technique used to visualize the presence and location of proteins within tissues. Drosophila larvae are particularly amenable to IHC because of the ease with which they can be processed for staining. Additionally, the larvae are transparent, meaning that some tissues can be visualized without the need for dissection. In IHC, proteins are ultimately detected with antibodies that specifically bind to “epitopes” within the protein of interest. In order to preserve...
09:13
Development of a Larval Zebrafish Infection Model for Clostridioides difficile
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Cited by 5 •
2020
Presented here is a safe and effective method to infect zebrafish larvae with fluorescently labeled anaerobic C. difficile by microinjection and noninvasive microgavage.
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.
06:08
Using Linear Agarose Channels to Study Drosophila Larval Crawling Behavior
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Cited by 12 •
2016
The Drosophila larva is a powerful model system to study neural control of behavior. This publication describes the use of linear agarose channels to elicit sustained bouts of linear crawling and methods to quantify the dynamics of larval structures during repetitive crawling behavior.
FAQs
Metamorphosis depends on the interaction between genetic programs and hormonal signals. Genetic instructions help organize changes in cell division, tissue differentiation, and organ formation, while hormonal signals help drive the transition from the larval condition toward a juvenile or adult form. Studying this coordination shows how developmental processes produce major changes in body structure over time.
Nutrition and environmental conditions can shape both survival and the eventual adult form. Larvae must grow while their tissues and organs develop, so variation in these influences can affect how successfully development proceeds. Examining these effects helps biologists connect early-life conditions with later biological outcomes and identify factors that may alter developmental pathways.
These processes represent linked aspects of growth and transformation rather than isolated events. Cell division increases developing material, tissue differentiation gives cells specialized roles, and organ formation establishes functional structures. Considering them together allows researchers to examine how a larva progresses through development and how feeding and growth contribute to the transition toward a later life stage.
Comparisons across organisms can reveal how developmental pathways relate to evolution, reproduction, ecology, and adult form. Because larvae may be structurally distinct from later stages, their transformations provide opportunities to examine how different organisms organize growth and metamorphosis. Such comparisons also help place species-specific developmental patterns within broader biological contexts.
In ecology, larval development helps researchers investigate how environmental conditions affect early-life survival and later outcomes. In disease-transmission research, larvae provide a developmental stage through which relevant biological processes can be examined. Aquaculture uses this knowledge to understand growth and survival during early life, supporting study of the conditions that influence successful development.
Larvae provide early-life systems in which researchers can examine tissue formation, organ development, and responses to outside influences. These features support investigations of regeneration and developmental disorders, while exposure to pollutants can reveal effects on vulnerable early stages. Findings from such studies help connect altered developmental processes with changes in survival, growth, or later form.