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

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

5.8K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.8K
The Fossil Record02:56

The Fossil Record

25.2K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
25.2K
Comparative Excretory Systems02:24

Comparative Excretory Systems

19.4K
Animals have evolved different strategies for excretion, the removal of waste from the body. Most waste must be dissolved in water to be excreted, so an animal’s excretory strategy directly affects its water balance.
19.4K
Convergent Evolution01:54

Convergent Evolution

27.8K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
27.8K
What is Evolutionary History?02:35

What is Evolutionary History?

36.5K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
36.5K
The Tree of Life - Bacteria, Archaea, Eukaryotes02:40

The Tree of Life - Bacteria, Archaea, Eukaryotes

32.4K
The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
32.4K

You might also read

Related Articles

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

Sort by
Same author

Microplastic retention within infiltration basins used for managed aquifer recharge: Effectiveness and key controlling factors.

Environmental pollution (Barking, Essex : 1987)·2026
Same author

A roadmap for establishing institutional readiness for cellular therapies targeting solid tumours and autoimmune diseases.

NPJ precision oncology·2026
Same author

Diagnostic performance of eosinopenia for identifying bacterial infections in the emergency department: a prospective multicenter study.

BMC emergency medicine·2026
Same author

Transcriptomic signature of differentiating catshark cartilage unravels the co-evolution of the Spp2 gene family with skeletal mineralisation in cartilaginous fish.

BMC biology·2026
Same author

Drivers of food cost in outer regional, remote, and very remote Australia: a systematic scoping review.

BMC public health·2026
Same author

Conservation profile of the largest Palearctic silverfish and Europe's largest cave-adapted terrestrial insect: <i>Squamatinia algharbica</i> (Zygentoma, Nicoletiidae).

Biodiversity data journal·2026

Related Experiment Video

Updated: Jul 12, 2025

Wholemount In Situ Hybridization for Astyanax Embryos
09:56

Wholemount In Situ Hybridization for Astyanax Embryos

Published on: March 2, 2019

7.1K

A collaborative backbone resource for comparative studies of subterranean evolution: The World Asellidae database.

Nathanaelle Saclier1,2, Louis Duchemin1, Lara Konecny-Dupré1

  • 1Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, Villeurbanne, France.

Molecular Ecology Resources
|October 21, 2023
PubMed
Summary

Researchers developed new tools and resources for studying freshwater isopods (Asellidae) to understand evolution in groundwater. They found male body size decreases relative to females after groundwater colonization, suggesting sexual selection.

Keywords:
collaborative databasecomparative analysismolecular resourcesphenotypic evolutionphylogenysubterranean biodiversity

More Related Videos

A Highly Scalable Approach to Perform Ecological Surveys of Selfing Caenorhabditis Nematodes
09:10

A Highly Scalable Approach to Perform Ecological Surveys of Selfing Caenorhabditis Nematodes

Published on: March 1, 2022

2.6K
Rapid Isolation of Wild Nematodes by Baermann Funnel
05:55

Rapid Isolation of Wild Nematodes by Baermann Funnel

Published on: January 31, 2022

8.6K

Related Experiment Videos

Last Updated: Jul 12, 2025

Wholemount In Situ Hybridization for Astyanax Embryos
09:56

Wholemount In Situ Hybridization for Astyanax Embryos

Published on: March 2, 2019

7.1K
A Highly Scalable Approach to Perform Ecological Surveys of Selfing Caenorhabditis Nematodes
09:10

A Highly Scalable Approach to Perform Ecological Surveys of Selfing Caenorhabditis Nematodes

Published on: March 1, 2022

2.6K
Rapid Isolation of Wild Nematodes by Baermann Funnel
05:55

Rapid Isolation of Wild Nematodes by Baermann Funnel

Published on: January 31, 2022

8.6K

Area of Science:

  • Evolutionary biology
  • Ecology
  • Genomics

Background:

  • Studying phenotypic evolution in novel environments like groundwater is crucial but challenging due to resource limitations.
  • Interspecific comparative studies on groundwater adaptation are scarce, hindering our understanding of evolutionary processes.

Purpose of the Study:

  • To create accessible tools and resources for studying the evolution of freshwater isopods (Asellidae) transitioning to groundwater habitats.
  • To facilitate large-scale phylogenetic comparative analyses of surface-to-subterranean transitions.

Main Methods:

  • Developed the World Asellidae database (WAD) with species occurrences, specimens, DNA data, and metadata.
  • Constructed a large-scale, dated phylogenetic tree for the Asellidae family.
  • Identified 34 surface-subterranean species pairs as replicates of groundwater colonization.

Main Results:

  • The World Asellidae database (WAD) provides a FAIR resource for thousands of species, specimens, and DNA sequences.
  • Phylogenetic reconstruction identified numerous independent transitions from surface to groundwater environments within Asellidae.
  • Demonstrated a significant decrease in male body size relative to females in groundwater-colonizing isopods.

Conclusions:

  • The WAD and phylogenetic framework offer unprecedented opportunities to study groundwater adaptation in Asellidae.
  • Phylogenetically controlled analysis reveals sex-specific body size shifts during groundwater colonization, likely driven by sexual selection.
  • These resources and findings pave the way for exploring trait evolution under new environmental pressures.