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Ion beams ‘supersize’ larval fish diet
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This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"One key to good fish breeding is providing fish with the right food. That means getting the right-sized food. As fish larvae grow, so does the optimum size of their food. That’s a problem for certain species bred in fisheries. Fish raised on live feed face a gap in their feed size as larvae: at a certain stage, the plankton they eat become too small for maximum growth. This “food size gap” can affect the quality and value of fish raised for consumption. But researchers from Japan appear to have one solution: “supersizing” plankton with beams of heavy ions. Researchers from the RIKEN Nishina Center for Accelerator-Based Science generated high-powered beams of carbon and argon ions in the hopes of producing size-boosting mutations in rotifers, a phylum of plankton commonly fed to fish larvae. The tremendous amounts of energy carried by these beams, a couple hundred thousand times the amount a human might receive during a routine CT scan, was enough to alter the DNA in rotifer cells..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Subject:
Applied Science
Engineering
Health, Medicine and Nursing
Material Type:
Diagram/Illustration
Reading
Provider:
Research Square
Provider Set:
Video Bytes
Date Added:
11/16/2022
Mutation Breeding
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It is well known that mutation is the ultimate source of variation. Without adequate variation, plant breeding is impossible. To start a breeding program, the breeder must find the appropriate genotype (containing the desired genes) from existing variation, or create the variation if it is not found in nature. Mutagenesis is the process by which new alleles are created. The purpose of this chapter is to discuss mutagenesis as both a technique and a breeding method. The newly created mutants may be used as parents in future breeding programs, in which case mutagenesis is a breeding technique as a source of variation. However, an induced mutant can be systematically processed through conventional breeding steps to be released as a cultivar, hence making it a breeding method (mutation breeding). Mutations arise spontaneously in nature and are pivotal in natural evolution.

Subject:
Agriculture
Career and Technical Education
Genetics
Life Science
Material Type:
Assessment
Date Added:
08/27/2019