Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Overview of Transposition and Recombination02:13

Overview of Transposition and Recombination

18.0K
Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
18.0K
Migration00:53

Migration

8.4K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
8.4K
DNA-only Transposons02:57

DNA-only Transposons

15.8K
DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
15.8K
Transposons01:24

Transposons

653
Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
653
LTR Retrotransposons03:08

LTR Retrotransposons

18.8K
LTR retrotransposons are class I transposable elements with long terminal repeats flanking an internal coding region. These elements are less abundant in mammals compared to other class I transposable elements. About 8 percent of human genomic DNA comprises LTR retrotransposons. Some of the common examples of LTR retrotransposons are Ty elements in yeast and Copia elements in Drosophila.
The internal coding region of LTR retrotransposons and their mechanism of transposition closely resembles a...
18.8K
Non-LTR Retrotransposons03:18

Non-LTR Retrotransposons

12.6K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
12.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

MFF budding from mitochondria regulates melanosome size and maturation.

Nature communications·2026
Same author

The Zinc Finger Ran-Binding Protein 3 (ZRANB3): An Advanced Perspective.

International journal of molecular sciences·2026
Same author

Transcriptional response of transposable elements to thermal stress in the Antarctic fish Trematomus bernacchii.

Scientific reports·2026
Same author

Coexisting With Humans: Genomic and Behavioral Consequences in a Small and Isolated Bear Population.

Molecular biology and evolution·2025
Same author

Tracing the Evolutionary Expansion of a Hyperdiverse Antimicrobial Peptide Gene Family in <i>Mytilus</i> spp.: The MyticalinDB Resource.

Genes·2025
Same author

Priming for seagrass resilience: DNA methylation and transcriptomic insights into heat stress memory in Posidonia oceanica seedlings.

The New phytologist·2025

Related Experiment Video

Updated: Nov 21, 2025

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
08:51

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

Published on: May 13, 2016

14.3K

Transposable Elements and Teleost Migratory Behaviour.

Elisa Carotti1, Federica Carducci1, Adriana Canapa1

  • 1Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy.

International Journal of Molecular Sciences
|January 13, 2021
PubMed
Summary
This summary is machine-generated.

Transposable elements, like short interspersed nuclear elements (SINEs), show quantitative differences in fish with migratory behaviors. These genomic variations are linked to the environmental challenges faced by anadromous and catadromous species.

Keywords:
environmental adaptationfishgenome evolutiontransposable elements

More Related Videos

Manipulation of Gene Function in Mexican Cavefish
07:01

Manipulation of Gene Function in Mexican Cavefish

Published on: April 22, 2019

9.6K
Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity
04:04

Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity

Published on: January 20, 2023

2.6K

Related Experiment Videos

Last Updated: Nov 21, 2025

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
08:51

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

Published on: May 13, 2016

14.3K
Manipulation of Gene Function in Mexican Cavefish
07:01

Manipulation of Gene Function in Mexican Cavefish

Published on: April 22, 2019

9.6K
Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity
04:04

Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity

Published on: January 20, 2023

2.6K

Area of Science:

  • Genomics
  • Evolutionary Biology
  • Ecology

Background:

  • Transposable elements (TEs) significantly contribute to eukaryotic genome size and evolution.
  • TE abundance is increasingly linked to environmental adaptation.
  • Diadromous fish undertake complex migrations between freshwater and marine environments.

Purpose of the Study:

  • To investigate the relationship between transposable elements and migratory behavior in fish.
  • To compare TE abundance and types across different fish migratory strategies.
  • To explore the role of TEs in adaptation to environmental changes during migration.

Main Methods:

  • Genome-wide analysis of transposable elements in 24 fish species.
  • Comparative analysis of TE composition in migratory and non-migratory fish.
  • Focus on DNA transposons and short interspersed nuclear elements (SINEs).

Main Results:

  • No significant difference in DNA transposon abundance was found between ray-finned fish and other groups.
  • TE composition did not clearly differentiate oceanodromous from potamodromous fish.
  • A notable quantitative difference in SINEs was observed between anadromous and catadromous species, irrespective of phylogeny.

Conclusions:

  • SINE abundance correlates with diadromous migratory behavior in fish.
  • Environmental shifts during migration likely drive these SINE variations.
  • TEs, particularly SINEs, play a role in the adaptation of migratory fish to diverse environments.