Primary Assay — Water Flea
Swimming Activity
Daphnia magna
Spontaneous swimming with characteristic hop-and-sink pattern. Bout frequency, speed, and pause duration are baseline metrics for toxicology assays.

Quantitative Output
Measured Parameters
Every parameter is automatically tracked frame-by-frame in the ConductVision pipeline for Daphnia magna.
| Parameter | Unit | Description |
|---|---|---|
| Hop frequency | hops/min | Bout rate |
| Mean swim speed | mm/s | Velocity during hop |
| Pause duration | s | Sink phase |
| Total distance | m/h | Cumulative locomotion |
References
Citations for Swimming Activity
- Dodson SI, Hanazato T. (1995). Commentary on effects of anthropogenic and natural organic chemicals on development, swimming behavior, and reproduction of Daphnia, a key member of aquatic ecosystems. Environ Health Perspect, 103 Suppl 4, 7-11. PMID: 7556032
Compatible Equipment
Hardware for Water Flea Research
Glass Column Phototaxis Chamber
Vertical phototactic assay
Multi-Well Behavioral Imaging Plate
High-throughput toxicology
Heart-Rate Imaging Microscope
Cardiotoxicity
Predator-Cue Exposure Chamber
Inducible defense induction
Acute Immobilization Test Plate
OECD 202 endpoint
Related Assays
Other Water Flea Primary Assays

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Phototaxis
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Predator-Induced Defenses
Daphnia magna
Kairomones from predatory fish or invertebrates induce morphological defenses (helmets, neck-teeth) and altered swimming…

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Acute Immobilization (OECD 202)
Daphnia magna
The 24-/48-h immobilization assay is the standard endpoint for chemical toxicity testing in aquatic ecotoxicology. Media…
Run Swimming Activity on ConductVision
Our team will configure the protocol, camera rig, and analysis pipeline for your water flea facility.