Related Experiment Video
Updated: May 10, 2026
08:00
Silencing the Spark: CRISPR/Cas9 Genome Editing in Weakly Electric Fish
Published on: October 27, 2019
Transgenic common carp do not have the ability to expand populations
1State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, China.
Plos One
|June 14, 2013
Summary
Transgenic common carp (afgh-CC) show low juvenile viability and do not outcompete wild carp. These genetically modified fish are unlikely to establish dominant populations in natural environments, suggesting ecological safety.
Area of Science:
- Ecotoxicology
- Genetics
- Aquatic Ecology
Background:
- Ecological safety of transgenic organisms is a significant global concern.
- Assessing ecological risks is vital for the industrial application of transgenic organisms.
- Transgenic common carp (afgh-CC) were developed for potential industrial use.
Purpose of the Study:
- To evaluate the ecological risks associated with transgenic common carp (afgh-CC).
- To compare the fertility and juvenile viability of afgh-CC with wild common carp (CC) in natural aquatic environments.
- To assess the potential for afgh-CC to impact wild populations.
Main Methods:
- Paternity testing was employed to analyze offspring population structures.
- Comparative analysis of mating ability and juvenile viability between afgh-CC and wild CC.
- Experiments were conducted in isolated natural aquatic environments.
Main Results:
- afgh-CC exhibited mating competitiveness similar to wild CC (1:1 ratio).
- Juvenile viability of afgh-CC was significantly low, with a daily survival rate below 98.00%.
- afgh-CC could not monopolize resources, indicating limited competitive advantage over wild CC.
Conclusions:
- Transgenic common carp (afgh-CC) are unlikely to establish dominant populations in natural environments due to low juvenile viability.
- Accidental release of afgh-CC is not expected to pose a significant ecological threat, as they are likely to decline and disappear.
- The study supports the ecological safety of afgh-CC in natural aquatic ecosystems.
Related Concept Videos
00:57Population Growth
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
00:53Transgenic Organisms
Overview
02:50Transgenic Plants
Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...