Fish Breeding
Fish Breeding - Related Videos
07:48
Zebrafish Breeding and Embryo Handling
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2023
Zebrafish (Danio rerio) are an important model organism that is particularly valuable for research in developmental biology. Zebrafish are extremely fertile and can produce hundreds of progeny per week, so it is relatively easy to collect a large number of embryos for high sample numbers. Furthermore, zebrafish undergo rapid development and embryos are transparent, allowing for easy visualization of developmental processes. This video covers the steps required for the collection of newly...
15:00
Fundamentals of Breeding and Weaning
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN Millions of mice and rats are bred for use in biomedical research each year. Worldwide, there are several large commercial breeding facilities that supply mice to research laboratories, but many facilities also choose to breed mice and rats in-house to reduce costs and increase research options. When breeding in the animal facility, researchers are able to manipulate the genetics of the...
01:33
Breeding Management in Rodent Studies
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2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Breeding management supports the 3Rs by minimizing unnecessary animal production and ensuring that only the number of animals required for a study is generated. Effective breeding strategies help reduce surplus animals and...
01:59
Plant Breeding and Biotechnology
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2020
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food. As humans' understanding of genetics advanced, improved crop varieties could be achieved more quickly. Artificial selection could be more directed, and crop varieties enhanced for favorable traits more quickly to produce better, more robust, or more palatable plants.
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.
FAQs
Temperature, light, water chemistry, and seasonal conditions can act as signals that influence when fish spawn. These cues help align the release of eggs and sperm, increasing the opportunity for fertilization when reproductive conditions are favorable. In biology, examining how spawning responds to such variables connects reproduction with environmental regulation and population-level timing.
External fertilization depends on spatial and temporal overlap between sperm and eggs in the water. Temperature, light, water chemistry, and seasonal conditions can influence when release occurs, so these variables affect the opportunity for gametes to meet. Studying that relationship helps biologists connect reproductive success with environmental conditions rather than treating fertilization as an isolated event.
Selective breeding changes which genetic traits are emphasized in later generations. In aquaculture, breeding programs may favor fish associated with improved growth, disease resistance, fertility, or product quality. The biological basis is inheritance: traits present in breeding populations can be passed between generations, allowing production goals to be connected with genetics.
A controlled program treats reproduction as a planned process rather than leaving spawning entirely to natural conditions. Biologists can use environmental cues and the participation of males and females to examine inheritance, development, or behavior, while aquaculture programs can direct reproduction toward useful traits. This structure makes comparisons between generations more informative.
A basic workflow links reproductive conditions to biological outcomes. Researchers identify relevant environmental cues, account for the release of male and female gametes, and then examine information about inheritance, development, behavior, or population biology. The emphasis depends on whether the program is designed as a biological study, aquaculture effort, or conservation activity.
In aquaculture, breeding programs apply inheritance to production goals. Selective breeding can support improvements in growth, disease resistance, fertility, and product quality, making reproduction part of a broader strategy for developing useful fish populations. The approach connects biological knowledge of gamete transmission and inherited traits with practical goals in managed production systems.
Conservation programs use fish breeding to help maintain genetic diversity and support restoration of threatened populations. Preserving variation matters because breeding populations must retain genetic traits across generations rather than becoming narrowly represented. In this context, reproductive management complements population biology by linking individual spawning events with the long-term recovery and continuity of fish populations.