V5 Predation Transmitter
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Are you still tracking what you think you’re tracking?
Take the guesswork out of predator prey interaction with the V5 Predation Tag
For several decades, researchers have been using underwater acoustic telemetry technology to study animal behaviour, movement, physiology and survival in marine and freshwater environments. But to determine and understand predation events, scientists have relied on guesswork or applied subjective criterion to data analysis which could potentially lead to inaccurate results.
VEMCO’s V5 Predation Tags permit exploration of novel questions and important research while increasing the certainty with which researchers can interpret their telemetry results.
The predation tag provides a direct measure of digestion wherein stomach acids digest a polymer. It is a superior technique to using indirect measures of activity such as acceleration.
The tag ID changes approximately 3 to 5 hours after predation and its trigger success rate is 100%.
Over the past two years, we have conducted over 140 control and experimental trials (12°C to 24°C) with an independent University research group. Details about the trials can be found in this recently published research paper.
Compatible with VEMCO’s new HR2 receiver and the VR2W-180 kHz receiver, the predation tag supports two acoustic transmission systems: PPM (Pulse Position Modulation) and HR (High Residence). For more information, download the V5 Predation Transmitter datasheet.
U.S. Patent No. 9,526,228 (AMIRIX Systems Inc.)
|Weight in air||0.68 grams|
|Power Output (dB re 1uPa @1m)||143 dB|
|Trigger time||3 to 5 hours (temperature dependent|
VEMCO V5 Predation Tag Designed to Identify Predator-Prey Interaction
Species: Rainbow trout, Yellow perch, Largemouth bass
When principal investigators Dr. Eddie Halfyard and Dr. Aaron Fisk of the Great Lakes Institute for Environmental Research at the University of Windsor wanted to better understand predation events in acoustic telemetry studies, they undertook a project to evaluate VEMCO’s new V5D predation tag.
- Validate mark recapture survival models
- Separate tag mortality form natural mortality
- Investigate predator-prey behaviour
- Investigate impacts of invasive predators on native species
- Study trophic energy transfer on reefs