Fish Kidney
Fish Kidney - Related Videos
07:25
Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
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Cited by 2 •
2017
A series of basic methods to enable the study of the reproductive ecology of fish kept in aquaria are described. These are useful protocols for collecting fish using SCUBA, transporting live fish, and observing the reproductive behavior of wild-caught fish kept in aquaria.
07:40
Dissection of the Adult Zebrafish Kidney
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Cited by 38 •
2011
The zebrafish kidney is home to both renal and hematopoietic adult stem/progenitor cells, and represents an outstanding opportunity to study these cell types and their progeny in a vertebrate model organism. Here, we demonstrate a detailed dissection procedure that enables the researcher to identify and surgically remove the adult zebrafish kidney, which can be used for applications such as cell isolation, transplantation, and expression studies of kidney and/or blood cell populations.
02:32
Osmoregulation in Fishes
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2019
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments? Fish employ osmoregulatory strategies to balance bodily levels of water and dissolved ions (i.e., solutes), such as sodium and chloride. Imagine two solutions separated by a membrane that is permeable to water.
03:36
Depigmentation and Prestaining of Zebrafish Kidney: A Technique to Prepare Adult Zebrafish Kidney for Staining
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2023
In this video, we demonstrate the depigmentation of adult zebrafish kidney and its subsequent preparation for staining procedures. Post-staining, the adult zebrafish kidney can be used for studying kidney regeneration, phenotypic characterization of renal disease models, and nephron functionality.
06:04
Transplantation of Cells Directly into the Kidney of Adult Zebrafish
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Cited by 10 •
2011
Cell transplantation is an essential technique for studying tissue regeneration and for developing cell-based therapies of disease. We demonstrate here a microsurgical technique that permits the transplantation of genetically labeled cells directly into the kidney of adult zebrafish fish.
FAQs
Nephrons first filter blood, then selectively reabsorb or excrete water, salts, and nitrogenous wastes. This selective handling allows the kidney to adjust the composition of internal fluids rather than removing all filtered substances indiscriminately. The resulting control supports internal stability, especially when environmental conditions alter the movement of water and ions across the fish’s body.
Freshwater and marine environments create different challenges for water and ion balance, so kidney function adapts to the fish’s surroundings. The organ must adjust how it handles water and salts through filtration, reabsorption, and excretion. Studying these differences helps explain how fish maintain stable internal conditions while living in aquatic environments with contrasting external conditions.
Ammonia is the primary nitrogenous waste for many fish, making its handling an important part of renal function. The kidney contributes to the controlled removal of this waste while also managing water and salts. Examining ammonia regulation therefore connects waste excretion with the broader problem of maintaining internal stability in aquatic organisms.
The fish kidney contributes to blood formation and immune defense in addition to its renal roles. These functions make kidney condition relevant to more than filtration or salt regulation: changes affecting the organ may also influence blood-related processes and resistance to disease. Consequently, fish kidney research can connect organ physiology with health and biological responses to stress.
Fish kidney studies can be used to investigate how aquatic toxicology and environmental stress affect internal regulation. Researchers can relate kidney function to changes in water and ion balance, waste handling, blood formation, or immune defense. This makes the organ a useful biological context for examining how environmental conditions influence fish health and physiological stability.
Comparing fish kidneys across species can reveal how renal function relates to different aquatic environments and patterns of osmoregulation. Differences in the handling of water, salts, and nitrogenous wastes provide a basis for examining environmental adaptation. Such comparisons also place kidney biology in an evolutionary context, linking organ function with the conditions in which fish live.