Zebrafish Testes
Zebrafish Testes - Related Videos
08:39
Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing
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Cited by 8 •
2017
The goal of this protocol is to alter the penetrance of lethal skeletal mutant phenotypes in zebrafish by selective breeding. Lethal mutants cannot be grown to adulthood and bred themselves, therefore this protocol describes a method for tracking and selecting penetrance through multiple generations by progeny testing.
13:32
Cryopreservation of Zebrafish Spermatogonia by Whole Testes Needle Immersed Ultra-Rapid Cooling
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Cited by 18 •
2018
The main purpose of this study was to adapt the needle immersed vitrification (NIV) procedure to cryopreserve whole zebrafish testes. Additionally, the repeatability of the method in five different zebrafish strains was tested.
06:17
Repeated Blood Collection for Blood Tests in Adult Zebrafish
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Cited by 87 •
2015
Repeated blood sampling is necessary and important in animal research. We developed a novel, non-lethal and reliable method for repeated blood collection from adult zebrafish, and applied this method to the study of blood biochemistry, including glucose metabolism.
07:31
Testing the Vascular Invasive Ability of Cancer Cells in Zebrafish (Danio Rerio)
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Cited by 19 •
2016
This method utilizes zebrafish embryos to efficiently test the vascular invasive ability of cancer cells. Fluorescent cancer cells are injected into the precardiac sinus or yolk sac of developing embryos. Cancer cell vascular invasion and extravasation is assessed via fluorescence microscopy of the tail region 24 to 96 hr later.
02:52
Small Molecule Screening and Toxicity Testing in Early-stage Zebrafish Larvae
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2025
This protocol describes a drug screening procedure in zebrafish larvae 3-7 days post fertilization followed by morphological assessment.
FAQs
Sertoli cells support germ-cell development by remaining closely associated with germ cells as they progress through spermatogenesis. This cellular relationship gives the testis an organized context in which developmental stages can be examined together rather than as isolated cell populations. Studying that association helps clarify how local testicular interactions contribute to male reproductive biology.
Endocrine signals coordinate more than cell growth alone: they regulate germ-cell development, maturation, and the release of sperm. Considering these processes together helps researchers distinguish a problem in progression from a problem in final sperm release. This makes hormonal regulation a useful framework for interpreting changes in testicular function and fertility.
Following germ cells across spermatogenesis links cellular development with reproductive output. Researchers can examine how germ cells change as they advance toward mature sperm and then consider whether sperm release is also affected. This progression-based view connects microscopic testicular events to broader questions about fertility without treating sperm production as a single, uniform step.
The model combines transparent embryos, a rapid life cycle, and well-characterized genetics, allowing reproductive questions to be studied within a tractable vertebrate system. These features make it possible to connect developmental biology with later reproductive outcomes and investigate genetic contributions to testicular function. Its usefulness therefore extends from basic biology to studies of fertility and reproductive development.
Researchers can use the zebrafish system to investigate how pharmaceuticals or environmental chemicals affect testicular function, reproductive development, or fertility. Its rapid life cycle and well-characterized genetics support systematic examination of these effects in a vertebrate model. Such studies help evaluate chemical influences on male reproduction while providing findings that can be considered alongside broader reproductive research.
Findings from zebrafish testes can be compared with other vertebrate systems to examine conserved mechanisms of germ-cell regulation. This comparative perspective matters because shared mechanisms may connect fish reproductive biology with broader principles of male reproduction, while zebrafish genetics provides a tractable way to investigate them. Such work can generate insights relevant to human reproductive health.