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    • AFSC/RACE/GAP/Nichol: Archival tag depth and temperature data from northern rock sole

    Metadata Updated: June 1, 2025

    Depth data from archival tags on northern rock sole (Lepidopsetta polyxystra) were examined to assess whether fish used tidal currents to aid horizontal migration. Two northern rock sole, out of 115 released with archival tags in the eastern Bering Sea, were recovered 314 and 667 days after release. Both fish made periodic excursions away from the bottom during mostly nighttime hours, but also during particular phases of the tide cycle. One fish that was captured and released in an area of rotary cur rents made vertical excursions that were correlated with tidal current direction. To test the hypothesis that the fish made vertical excursions to use tidal currents to aid migration, a hypothetical migratory path was calculated using a tide model to predict the current direction and speed during periods when the fish was off the bottom. This migration included limited movements from July through December, followed by a 200-km southern migration from January through February, then a return northward in March and April. The successful application of tidal current information to predict a horizontal migratory path not only provides evidence of selective tidal stream transport but indicates that vertical excursions were conducted primarily to assist horizontal migration.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date May 15, 2025
    Metadata Created Date October 28, 2022
    Metadata Updated Date June 1, 2025
    Reference Date(s) (publication)
    Frequency Of Update

    Metadata Source

    Harvested from NMFS AFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date May 15, 2025
    Metadata Created Date October 28, 2022
    Metadata Updated Date June 1, 2025
    Reference Date(s) (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:28005
    Access Constraints Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/RACE/GAP/Nichol: Archival tag depth and temperature data from northern rock sole [Data Date Range], https://www.fisheries.noaa.gov/inport/item/28005., Access Constraints: There are no legal restrictions on access to the data. They reside in public ___domain and can be freely distributed., Use Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested., Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose. NOAA denies liability if the data are misused.
    Bbox East Long -163
    Bbox North Lat 59
    Bbox South Lat 54
    Bbox West Long -168
    Coupled Resource
    Frequency Of Update
    Harvest Object Id 4ad44795-cd3f-4c10-b64e-601b5f5cad7d
    Harvest Source Id 26a29bb9-50b0-47fd-920b-edc74aa6ec76
    Harvest Source Title NMFS AFSC
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage Two NRS were recovered from among 115 released with attached electronic data storage tags in the eastern Bering Sea between 4 June and 26 July 2003. Release locations were approximately 200 km northeast of St. Paul Island (northern fish) and 18 km northwest of Unimak Island (southern fish) (Fig. 1). Fish were initially captured with a bottom trawl, tagged and released during the course of the annual eastern Bering Sea bottom trawl survey (Acuna and Lauth, 2008). The two recovered fish, both captured by commercial trawlers, were a 34 cm TL (at release) female at liberty for 314 days (northern fish) and a 40 cm TL (at release) female at liberty for 667 days (southern fish). The fish were tagged with Lotek Wireless LTD-1100 data storage tags. Tags were attached to the eyed-side, just below the anterior end of the dorsal fin using 0.5 mm stainless-steel wire. The wire was inserted through two points on the tag, through the fish’s muscle, and affixed on the blind side using oval plastic backing. The two wire ends were fastened on the outside of the backing with a crimped connector sleeve. Tag data, including depth and temperature, were recorded at 0.5- or 1-hr time intervals. Depth had a resolution of 0.58 m when fish remained in less than 150 m and 1.2 m thereafter if the fish exceeded 150 m; temperature had an accuracy of + 0.3 ¿C. The northern tag recorded for the entire 314 days the fish was at liberty, whereas the southern tag recorded for 620 of 667 days at liberty before the battery died.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-168.0, 54.0], [-163.0, 54.0], [-163.0, 59.0], [-168.0, 59.0], [-168.0, 54.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2003
    Temporal Extent End 2005

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