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Frog Lab
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The lab explores the behavior of animals, starting with frogs, through mathematics and experiments.
AboutAbout the lab
Calling all animal lovers.
Frog Lab studies a variety of animals, starting with frogs, by combining mathematics and experiments.
The lab collects behavioral data through field surveys and laboratory experiments, then uses mathematical equations to model the mechanisms behind the phenomena.
Its goal is to discover previously unknown behaviors of living organisms and apply them to engineering.
The lab welcomes students who want to study animal behavior based on informatics and mathematical sciences, as well as students who want to learn informatics and mathematical sciences based on biology.
Key terms
- Mathematical model
- A description of how the behavior of living organisms works, expressed in mathematical equations
- Midge swarm
- The movement in which a swarm of chironomid midges stays within a certain area as a whole while continually changing shape
- Predator–prey relationship
- The relationship between the one that eats (the predator) and the one that is eaten (the prey)
NewsLab news
Held information sessions on lab assignment for third-year undergraduate students (Oct 15 and Oct 23)
A paper by a graduate on the calls of the tsukutsukuboshi cicada (Meimuna opalifera) was published in Journal of Experimental Biology
Released the results of a joint study with students on the walking rhythm of train millipedes (kisha-yasude) as a preprint
Started as Frog Lab in April 2025
A second-year student in the College of Engineering Systems received the Presentation Paper President's Award at the 46th Annual Meeting of the Japanese Society for Comparative Physiology and Biochemistry
ResearchResearch themes
The lab investigates the behavior of animals, starting with frogs, using data collected through field surveys and laboratory experiments together with mathematical models. It aims to discover previously unknown behaviors of living organisms and to apply them to engineering.
*Illustrative imageFrog Vocalization
Focusing on the behavior of frogs that call in alternation when several gather together, the lab studies this phenomenon from a variety of angles. Past work includes experiments with a robot frog and analysis of how differences in body length affect calls.
*Illustrative imageAnalysis of Flight Behavior in Animals
The lab analyzes the movements of animals with outstanding flight performance, aiming to clarify the mechanisms behind their behavior and apply them to engineering. Past student projects include analysis of the takeoff strategies and landing movements of black-tailed gulls, and mathematical modeling of bat flight.
*Illustrative imagePredator–Prey Dynamics in Fish
The lab analyzes the dynamics of predation in fish and investigates how behavioral patterns affect survival probability. It has also worked on capturing the movements of predatory and prey fish in 3D and building mathematical models of them.
*Illustrative imageMidge Swarms
The lab investigates what kinds of movements make up the swarm columns formed by chironomid midges. It models the distinctive motion in which a swarm changes shape while staying within a certain area, and plans to examine whether this can be applied to multi-agent systems.
MembersFaculty
The members of Frog Lab consist of faculty, master's and undergraduate students, and administrative assistants.As of 2026
- Associate ProfessorIkkyu Aihara
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “HylaArboreaCallingMale2” Christian Fischer / CC BY-SA 3.0 (cropped)
- Frog Vocalization: “Hyla cinerea sac full” Geoff Gallice from Gainesville, FL, USA / CC BY 2.0 (cropped)
- Analysis of Flight Behavior in Animals: “Bird in flight wings spread” Bengt Nyman / CC BY 2.0 (cropped)
- Predator–Prey Dynamics in Fish: “Reef fish, trevally at Midway coral ( )” USFWS Pacific / Public domain (cropped)
- Midge Swarms: “Chironomid Midge ( )” Katja Schulz from Washington, D. C., USA / CC BY 2.0 (cropped)
- Related lab (Data-Driven Science Lab): “18 column periodic table, with Lu and Lr in group 3” Sandbh / CC BY-SA 4.0 (cropped)
- Related lab (System Dependability Lab): “Nec-cluster” Hindermath / CC BY-SA 3.0 (cropped)
- Related lab (Multi-Perceptual Media Processing Lab): “Sound diffusor (left) in front of loudspeaker driver, on Sansui SP-Z6 Hi-Fi loudspeaker box 4-way” Alan Levine / CC BY 2.0 (cropped)
- Related lab (Applied Mathematical Systems Lab): “Engine Control Room Harmony of the Seas 2026” Larry D. Moore / CC BY 4.0 (cropped)
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