Occurrence, fate, and confounding influence of ghost passive integrated transponder tags in an intensively monitored watershed

Bond, Rosealea M.; Nicol, Colin L.; Kiernan, Joseph D.; Spence, Brian C.

doi:10.1139/cjfas-2017-0409

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Occurrence, fate, and confounding influence of ghost passive integrated transponder tags in an intensively monitored watershed

2019
By Bond, Rosealea M. ; Nicol, Colin L. ; Kiernan, Joseph D. ; ...
Source: Canadian Journal of Fisheries and Aquatic Sciences, 76(2), 286-298

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Journal Title:

Canadian Journal of Fisheries and Aquatic Sciences
Personal Author:

Bond, Rosealea M. ; Nicol, Colin L. ; Kiernan, Joseph D. ; Spence, Brian C.

Bond, Rosealea M. ; Nicol, Colin L. ; Kiernan, Joseph D. ; Spence, Brian C. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center) Less -
Description:

Over the last three decades, passive integrated transponder (PIT) tags have been widely used to study fish populations. Interpretation of PIT tag detections, however, can be confounded by the presence of ghost tags, tags liberated when a fish dies. We used a combination of mobile antenna surveys, stationary antenna detections, and multistate mark–recapture modeling to assess the abundance and fate of ghost tags in a coastal California watershed. Accumulation of ghost tags from released hatchery-origin coho salmon (Oncorhynchus kisutch) smolts was substantial during California’s recent drought, with 2224 ghost tags identified during mobile reader surveys. Between surveys, PIT tags moved downstream a median distance of 346 m and a maximum distance of 1982 m. Stationary antenna array detections indicated that these movements occurred during high-flow events, concurrent with live fish movement. The multistate model estimated that, during winter, approximately 40% of tags were buried in the substrate beyond the read range of mobile readers. Failure to account for transport and burial dynamics of ghost tags can lead to biased estimates of fish abundance, survival, and movement.
Source:

Canadian Journal of Fisheries and Aquatic Sciences, 76(2), 286-298
DOI:

https://doi.org/10.1139/cjfas-2017-0409
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0706-652X;1205-7533;
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Canadian Science Publishing
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Journal Article
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urn:sha-512:3220ccf9a0cb04ab858eb160d1325e730ff72438078c3f86277b8c2d24456b2b9ab6146b2654289970de0c9d4f1130db47d4a51c1555aa191950460e9348cea6
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Occurrence, fate, and confounding influence of ghost passive integrated transponder tags in an intensively monitored watershed

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