Handling-induced delay and downstream movement of adult chinook salmon in rivers

Bernard, David R.; Hasbrouck, James J.; Fleischman, Steven J.

doi:10.1016/s0165-7836(99)00056-9

Cited by 43 publications

(44 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Whether this is due to the turtle already having obtained sufficient food stores or seasonal increases in migratory restlessness is unknown. Although tagging has been known to cause the delay or abortion of migration (Bernard et al 1999, Olney et al 2006, this is the first report of tagging potentially triggering migration.…”

Section: Discussionmentioning

confidence: 80%

Evaluating potential tagging effects on leatherback sea turtles

Sherrill-Mix

James²

2008

Endang. Species. Res.

View full text Add to dashboard Cite

Although the use of satellite tracking to study the leatherback sea turtle Dermochelys coriacea continues to increase, there has been little inquiry into the effects of this research. We investigated effects of handling and tagging on leatherbacks using state-space estimated positions from 42 turtles satellite-tagged at sea. Although a control group was not available, we observed several possible effects of tagging and handling. Turtles were much more likely to begin migration, and travel speeds were significantly higher in the first week after capture. We inferred that 17 of the 42 turtles departed Canadian waters immediately after tagging. Turtles were more likely to begin their migration immediately if they were tagged later in the year, or if they were tagged following entanglement in fishing gear. Turtles that remained in the north commenced foraging after a median of 12.7 d. We also documented reports of previously harnessed leatherbacks re-sighted on nesting beaches. Although it remains uncertain whether the observed effects are due to capture and/or tagging and whether they are detrimental to individual turtles, this study emphasizes the necessity of considering tag effects on this species.

show abstract

Section: Discussionmentioning

confidence: 80%

Evaluating potential tagging effects on leatherback sea turtles

Sherrill-Mix

James²

2008

Endang. Species. Res.

View full text Add to dashboard Cite

show abstract

“…The timing and direction of initial movements can aid in interpreting behaviors. For example, chinook salmon (Oncorhynchus tshawytscha) were classified as ''motivated'' or ''hesitant'' based on the initial direction of movement following release (Bernard et al, 1999). Immediate upstream movement may indicate that the urge to spawn overrides other considerations.…”

Section: Discussionmentioning

confidence: 99%

“…However, the criterion of limited upstream movement following tagging has also been used to exclude fish from analyses (Sprankle, 2005) and to identify altered migratory behavior (Olney et al, 2006). Researchers should report whether the entirety of the telemetry record is used, or if data are only collected once a fish resumes migration or moves a specified distance upstream (Bernard et al, 1999;Beasley & Hightower, 2000;Keefer et al, 2004). If researchers provide information on all of these parameters in future telemetry field studies, a body of literature will emerge on which to base tagging protocols, and from which much can be learned about spawning behavior in the field.…”

Section: Discussionmentioning

confidence: 99%

What is “fallback”?: metrics needed to assess telemetry tag effects on anadromous fish behavior

et al. 2009

View full text Add to dashboard Cite

Telemetry has allowed researchers to document the upstream migrations of anadromous fish in freshwater. In many anadromous alosine telemetry studies, researchers use downstream movements (''fallback'') as a behavioral field bioassay for adverse tag effects. However, these downstream movements have not been uniformly reported or interpreted. We quantified movement trajectories of radio-tagged anadromous alewives (Alosa pseudoharengus) in the Ipswich River, Massachusetts (USA) and tested blood chemistry of tagged and untagged fish held 24 h. A diverse repertoire of movements was observed, which could be quantified using (a) direction of initial movements, (b) timing, and (c) characteristics of bouts of coupled upstream and downstream movements (e.g., direction, distance, duration, and speed). Because downstream movements of individual fish were almost always made in combination with upstream movements, these should be examined together. Several of the movement patterns described here could fall under the traditional definition of ''fallback'' but were not necessarily aberrant. Because superficially similar movements could have quite different interpretations, post-tagging trajectories need more precise definitions. The set of metrics we propose here will help quantify tag effects in the field, and provide the basis for a conceptual framework that helps define the complicated behaviors seen in telemetry studies on alewives and other fish in the field.

show abstract

“…Fish that were first detected above the tagging location or exhibited HANDLING AND TAGGING EFFECTS OF RIVER HERRING some level of fallback but remained within the spawning area were classified as motivated. Fish first detected downstream of the tagging location that eventually returned to or continued migrating upstream of the tagging location were classified as hesitant (Bernard et al 1999; Table 1; Figure 3). …”

Section: Methodsmentioning

confidence: 99%

Handling and Tagging Effects, In‐River Residence Time, and Postspawn Migration of Anadromous River Herring in the Hudson River, New York

Eakin

2017

Mar Coast Fish

View full text Add to dashboard Cite

In a 2013 pilot study, acoustic tags were inserted into two species of river herring, Alewife Alosa pseudoharengus and Blueback Herring Alosa aestivalis. The primary objectives were to identify handling and tagging effects and assess inriver residence time. The secondary objective was to identify postspawn coastal migration patterns. Fish were collected on spawning grounds in the upper portion of the Hudson River, New York. Vemco V7 acoustic transmitters were gastrically inserted into 25 river herring (13 Alewives and 12 Blueback Herring) that were in pre, active, or post spawning conditions. In-river acoustic data were collected from 23 of the 25 river herring. The majority of tagged fish exhibited some level of fallback (downstream migration) after the tagging event, all Blueback Herring and all male Alewives returning to spawning areas. The majority of female Alewives did not return to the spawning area after tagging, and this may be a result of when and where tagging events occurred. Both species of river herring exhibited similar in-river residence times of approximately 2-3 weeks and exited the system 3-6 d after spawning. Information on coastal movements of four Blueback Herring (two females and two males) was also obtained, spanning the south shore of Long Island, New York, to the mouth of Penobscot Bay, Maine. Coastal and in-river tag detections were reported by members of the Atlantic Cooperative Telemetry Network. In conclusion, this experiment can now be repeated with confidence on a larger scale with multiyear tags in order to identify unknown in-river spawning areas, provide information regarding spawning site fidelity, and bolster current knowledge of coastal migration patterns for both species.

show abstract

Handling-induced delay and downstream movement of adult chinook salmon in rivers

Cited by 43 publications

References 7 publications

Evaluating potential tagging effects on leatherback sea turtles

Evaluating potential tagging effects on leatherback sea turtles

What is “fallback”?: metrics needed to assess telemetry tag effects on anadromous fish behavior

Handling and Tagging Effects, In‐River Residence Time, and Postspawn Migration of Anadromous River Herring in the Hudson River, New York

Contact Info

Product

Resources

About