Tardigrades and their emergence as model organisms

Area of Science:

• Evolutionary Biology
• Developmental Biology
• Extremophile Biology

Background:

• Model organisms such as C. elegans and Drosophila are crucial for biological research.
• The Ecdysozoa clade, including nematodes and arthropods, offers potential for comparative biology.
• Limited laboratory tools historically hindered research in many ecdysozoan phyla.

Purpose of the Study:

• To establish tardigrades as tractable model organisms for biological research.
• To develop laboratory tools for studying tardigrades, specifically Hypsibius exemplaris.
• To leverage tardigrades for comparative studies within Ecdysozoa.

Main Methods:

• Development of laboratory tools and techniques for tardigrade research, initiated in 1999.
• Focus on the tardigrade species Hypsibius exemplaris.
• Comparative analysis leveraging existing knowledge from C. elegans and Drosophila.

Main Results:

• Tardigrades, particularly Hypsibius exemplaris, have emerged as valuable model organisms over two decades.
• Established research methodologies enable diverse biological investigations in tardigrades.
• Tardigrade models are now used to address questions in animal body plan evolution and extreme condition survival.

Conclusions:

• Tardigrades represent a significant expansion of tractable model organisms within the Ecdysozoa.
• The development of research tools has unlocked the potential of tardigrades for fundamental biological questions.
• Tardigrade research contributes to understanding evolution and the mechanisms of biological resilience.