Scholarlink

<p>Fish primarily rely on visual cues for navigation and coordination. However, the effects of temporally varying visual stimuli on group dynamics remain poorly understood. In this study, we projected rotating dot patterns—black dots (B.D.), white dots (W.D.), and a no-stimulus control—onto the bottom of an experimental tank. We then analyzed both individual and group-level behaviors of <i>Plecoglossus altivelis</i>. Our results showed that the school maintains its formation while following the dot, and fish under the B.D. condition exhibited significantly stronger alignment with the direction of stimulus movement. Nearest-neighbor distance analysis further revealed that group cohesion increased under the B.D. condition. In contrast, the W.D. condition led to more dispersed schooling structures. Our findings demonstrate that dynamic visual stimuli can robustly influence both individual motion and collective organization in fish. This study highlights the potential of dynamic light patterns as a noninvasive method for guiding fish schools. It also offers a novel experimental framework for exploring the visual mechanisms that govern collective motion.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Visual manipulation of group behavior in sweetfish (Plecoglossus altivelis) via projected dot patterns

  • 期刊论文

  • 发表日期：

    2026年7月7日

查看全文
  • Kohei Ohashi,
  • Rei Hiraoka,
  • Tomohiro Iwata,
  • Syoma Kamata,
  • Raj Rajeshwar Malinda,
  • Hiroaki Kawashima,
  • Hitoshi Habe,
  • Takayuki Niizato

摘要

Fish primarily rely on visual cues for navigation and coordination. However, the effects of temporally varying visual stimuli on group dynamics remain poorly understood. In this study, we projected rotating dot patterns—black dots (B.D.), white dots (W.D.), and a no-stimulus control—onto the bottom of an experimental tank. We then analyzed both individual and group-level behaviors of Plecoglossus altivelis. Our results showed that the school maintains its formation while following the dot, and fish under the B.D. condition exhibited significantly stronger alignment with the direction of stimulus movement. Nearest-neighbor distance analysis further revealed that group cohesion increased under the B.D. condition. In contrast, the W.D. condition led to more dispersed schooling structures. Our findings demonstrate that dynamic visual stimuli can robustly influence both individual motion and collective organization in fish. This study highlights the potential of dynamic light patterns as a noninvasive method for guiding fish schools. It also offers a novel experimental framework for exploring the visual mechanisms that govern collective motion.