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<p>Pop-up satellite archival tags (PSATs) enable the collection of fish behavioral data without requiring tag retrieval or fixed receiver arrays. In this pilot study, externally attached miniaturized PSATs (miniPATs) were deployed on two Korean rockfish (<i>Sebastes schlegelii</i>; 33.0–34.1&#xa0;cm, 0.60–0.63&#xa0;kg) and two spotted sea bass (<i>Lateolabrax</i> spp.; 71.0–71.5&#xa0;cm, 3.5–4.0&#xa0;kg) to investigate their horizontal and vertical movement patterns in the southwestern coastal waters of Korea in July 2022. During the tracking periods (5–12&#xa0;days), all individuals exhibited active post-release movement, with total travel distances ranging from 22 to 558&#xa0;km. <i>S. schlegelii</i> showed average swimming depths of 14.10 ± 4.85&#xa0;m and 34.07 ± 11.92&#xa0;m under ambient temperatures of 24.15 ± 1.20&#xa0;°C and 17.99 ± 2.68&#xa0;°C, respectively. <i>Lateolabrax</i> spp. typically occupied shallower depths (15.62–16.16&#xa0;m) under warmer temperatures (23.88–24.39&#xa0;°C). One <i>Lateolabrax</i> spp. individual exhibited significant diurnal variation in depth, occupying deeper waters during the day (16.29 ± 4.49&#xa0;m) than at night (15.96 ± 3.90&#xa0;m) throughout the entire tracking period (<i>p</i> &lt; 0.001). During a time segment showing consistent diel depth patterns, the fish maintained shallow and stable positioning between 05:00 and 08:00 (15.4 ± 2.64&#xa0;m), suggestive of rest-like behavior, followed by active excursions during the day. These findings demonstrate that PSATs can effectively detect fine-scale movement behaviors in small- to medium-bodied coastal fishes and reveal distinct interspecific and individual-level differences in spatial use.</p>

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Short-Term Movement of MiniPAT-Tagged Coastal Fishes in the Yellow Sea: Case Studies on Korean Rockfish (Sebastes schlegelii) and Spotted Sea Bass (Lateolabrax spp.)

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Young Uk Kim,
  • Yun Jeong Seo,
  • Won Young Lee,
  • Sung-Yong Oh

摘要

Pop-up satellite archival tags (PSATs) enable the collection of fish behavioral data without requiring tag retrieval or fixed receiver arrays. In this pilot study, externally attached miniaturized PSATs (miniPATs) were deployed on two Korean rockfish (Sebastes schlegelii; 33.0–34.1 cm, 0.60–0.63 kg) and two spotted sea bass (Lateolabrax spp.; 71.0–71.5 cm, 3.5–4.0 kg) to investigate their horizontal and vertical movement patterns in the southwestern coastal waters of Korea in July 2022. During the tracking periods (5–12 days), all individuals exhibited active post-release movement, with total travel distances ranging from 22 to 558 km. S. schlegelii showed average swimming depths of 14.10 ± 4.85 m and 34.07 ± 11.92 m under ambient temperatures of 24.15 ± 1.20 °C and 17.99 ± 2.68 °C, respectively. Lateolabrax spp. typically occupied shallower depths (15.62–16.16 m) under warmer temperatures (23.88–24.39 °C). One Lateolabrax spp. individual exhibited significant diurnal variation in depth, occupying deeper waters during the day (16.29 ± 4.49 m) than at night (15.96 ± 3.90 m) throughout the entire tracking period (p < 0.001). During a time segment showing consistent diel depth patterns, the fish maintained shallow and stable positioning between 05:00 and 08:00 (15.4 ± 2.64 m), suggestive of rest-like behavior, followed by active excursions during the day. These findings demonstrate that PSATs can effectively detect fine-scale movement behaviors in small- to medium-bodied coastal fishes and reveal distinct interspecific and individual-level differences in spatial use.