Juvenile Chinook Salmon Survival When Exposed to Simulated Dam Passage after Being Implanted with a New Microacoustic Transmitter
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
The current minimum size for tagging Chinook Salmon Oncorhynchus tshawytscha with acoustic transmitters is = 95 mm fork length (FL). Using a new injectable acoustic transmitter (AT), our objective was to determine a minimum size for tagging Chinook Salmon. We measured survival and transmitter and tissue retention after exposure to rapid pressure changes (n = 399) or shear forces (n = 308). Fish (69–107 mm FL) were implanted with an AT (0.22 g; AT-only) or an AT and a passive integrated transponder (PIT; 0.10 g; AT+PIT) tag through a 3-mm incision with no sutures, or did not receive an incision or tag (control). Survival and transmitter and tissue retention following pressure changes was significantly lower for AT-only (0.70) and AT+PIT (0.54) fish compared to controls (0.85). No transmitters were expelled but 2.2% of AT-only and 12.5% of AT+PIT fish had tissue or a transmitter protruding. Following shear exposure, survival and transmitter and tissue retention was significantly lower for AT-only (0.70) and AT+PIT (0.61) fish compared to controls (0.98). Here, tissue expulsion described 87% of AT-only and 80% of AT+PIT mortalities. In both tests fish larger than 85–88 mm FL had a higher probability of survival and tissue and transmitter retention than smaller fish. We recommend the minimum size for tagging continue to be 95 mm FL, using a 3-mm incision with no sutures.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE; U.S. Army Corps of Engineers (USACE), Portland District
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1498789
- Report Number(s):
- PNNL-SA-130560
- Journal Information:
- North American Journal of Fisheries Management, Vol. 38, Issue 4; ISSN 0275-5947
- Publisher:
- Taylor and FrancisCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
How Small Can We Go? Evaluating Survival, Tag Retention, and Growth of Juvenile Chinook Salmon Implanted with a New Acoustic Microtag
|
journal | November 2019 |
Pushing the envelope: Micro-transmitter effects on small juvenile Chinook salmon (Oncorhynchus tshawytscha)
|
journal | March 2020 |
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