Terrapin Tagging

Published May 01, 2012

Last week, the National Aquarium welcomed Dr. Willem Roosenburg, a professor from Ohio University, to Baltimore. As a renowned diamondback terrapin researcher, he was here to implant PIT tags under the skin of the juvenile turtle ambassadors from the Aquarium’s Terrapins in the Classroom program.

The passive integrated transponder device, or PIT tag, is a tiny chip the size of a grain of rice that allows Dr. Roosenburg and other researchers to track terrapin movements and life history in the Chesapeake Bay.  In most cases, the tag will stay with the terrapin for its entire life, allowing researchers to gather long-term data on individual terrapins and, eventually, draw conclusions about the broader terrapin population.

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Through the Terrapins in the Classroom program, students from 31 schools across Maryland contribute to this research by raising hatchling diamondback terrapins in their classroom. This "head start" protects the terrapins during their first year of life—the time when they are most likely to become a snack for a predatory fish, snake, or bird.

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In early fall, biologists gather hatchings as they emerge from nests on Poplar Island and collect detailed data on each turtle as well as their nesting site. Aquarium staff then distribute a these terrapins to the lucky schools participating in the program. During the school year, students are charged with caring for their classroom terrapin and tracking his or her growth. At the end of the school year, the student caregivers will travel to Poplar Island to release the tagged terrapins at the site where they were collected. The hope is that Dr. Roosenburg and his field crew will recapture these terrapins in future years to document their continued growth and survivorship.

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Through the Terrapins in the Classroom program, students contribute to cutting-edge research and create lasting connections with their terrapin. Though sad to say goodbye on release day, students are more acutely aware of the impact a changing environment will have on their terrapin. This direct connection to the Chesapeake Bay inspires more thoughtful choices and, hopefully, a lifetime of environmental stewardship.

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