A Novel Acoustic Dissolved Oxygen Transmitter for Fish Telemetry
Abstract:The multiple responses of fishes to changes in dissolved oxygen saturations have been studied widely in the laboratory. In contrast, only a few studies have included field observations. The objective of the present study was to evaluate the performance of a novel acoustic dissolved oxygen transmitter for field biotelemetry. The results demonstrated that the output of the transmitter was unaffected by three different temperatures (10 to 30°C) and described the dissolved oxygen saturation with high accuracy (r2 > 0.99) over the entire range of 0 to 191% saturation. The response time (≥ 90% of end value) of the transmitter was 12 s both in terms of decreasing (100 to 0%) and increasing (0 to 100%) oxygen saturations. When externally attached to fishes, the present findings support the use of the transmitter for reliable dissolved oxygen measurements on individuals living in environments that may change both temporally and spatially with regard to ambient temperature and dissolved oxygen saturation.
Document Type: Short Communication
Publication date: March 1, 2006
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