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Collecting Marine Gnathiid Isopod Fish Parasites with Light Traps

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Published on: September 25, 2023

Collective gradient sensing in fish schools.

James G Puckett¹, Aawaz R Pokhrel², Julia A Giannini²

¹Department of Physics, Gettysburg College, Gettysburg, Pennsylvania, 17325, USA. jpuckett@gettysburg.edu.

Scientific Reports

|May 17, 2018

Summary

This summary is machine-generated.

Animals in groups navigate better by balancing social cues and environmental information. Rummy nose tetras outperformed golden shiners in a noisy light gradient due to superior individual sensing abilities.

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Area of Science:

Collective behavior and animal group dynamics.
Environmental sensing and navigation in aquatic species.

Background:

Animals often benefit from group living, with models showing simple interactions generate complex group structures like swarms and flocks.
Environmental noise and gradients present challenges for collective navigation.

Purpose of the Study:

To experimentally investigate how group performance in navigating a noisy light gradient is affected by social and environmental information.
To compare the group navigation abilities of golden shiners (Notemigonuscrysoleucas) and rummy nose tetra (Hemigrammus bleheri).

Main Methods:

Experimental investigation of group navigation in two freshwater fish species exposed to a noisy light gradient.
Numerical simulations to analyze the influence of social versus environmental information on group performance.

Main Results:

Rummy nose tetras demonstrated superior performance in navigating the light gradient compared to golden shiners.
Tetras' enhanced performance was attributed to their innate individual capacity to sense the environmental gradient.
Simulations revealed that optimal group performance hinges on balancing social and environmental information.

Conclusions:

Individual sensory abilities play a crucial role in the collective navigation success of fish groups.
Effective group performance requires a strategic balance between relying on social cues and sensing the environment.
Findings have implications for understanding collective behavior and optimizing group strategies in variable environments.