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Fig. 3 | Animal Biotelemetry

Fig. 3

From: Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus)

Fig. 3

Attachment system for ear satellite transmitters (PTTs) mounted on polar bears. a SPOT-227B used in 2007. A pin was mounted through a hole in the earlobe of the bear and secured with a steel washer that sat on the inner side of the earlobe. A nut was screwed onto the pin to hold the washer. b SPOT-227B in 2008–2012. A male nut was screw into a female end of the pin to hold the washer. c SPOT-305A. A plastic pin was held fast by a plastic washer inside the ear orifice. Transmitters a and c were retrieved from polar bears in Greenland both with antennas broken at base

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