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Collective movement as a solution to noisy navigation and its vulnerability to population loss.

Publication ,  Journal Article
Granger, J; Johnsen, S
Published in: Proceedings. Biological sciences
November 2022

Many animals use the geomagnetic field to migrate long distances with high accuracy; however, research has shown that individual responses to magnetic cues can be highly variable. Thus, it has been hypothesized that magnetoreception alone is insufficient for accurate migrations and animals must either switch to a more accurate sensory cue or integrate their magnetic sense over time. Here we suggest that magnetoreceptive migrators could also use collective navigation strategies. Using agent-based models, we compare agents utilizing collective navigation to both the use of a secondary sensory system and time-integration. Our models demonstrate that collective navigation allows for 70% success rates for noisy navigators. To reach the same success rates, a secondary sensory system must provide perfect navigation for over 73% of the migratory route, and time integration must integrate over 50 time-steps, indicating that magnetoreceptive animals could benefit from using collective navigation. Finally, we explore the impact of population loss on animals relying on collective navigation. We show that as population density decreases, a greater proportion of individuals fail to reach their destination and that a 50% population reduction can result in up to a 37% decrease in the proportion of individuals completing their migration.

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Published In

Proceedings. Biological sciences

DOI

EISSN

1471-2954

ISSN

0962-8452

Publication Date

November 2022

Volume

289

Issue

1987

Start / End Page

20221910

Related Subject Headings

  • Spatial Navigation
  • Sensation
  • Movement
  • Cues
  • Animals
  • Animal Migration
  • 41 Environmental sciences
  • 31 Biological sciences
  • 30 Agricultural, veterinary and food sciences
  • 11 Medical and Health Sciences
 

Citation

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Granger, J., & Johnsen, S. (2022). Collective movement as a solution to noisy navigation and its vulnerability to population loss. Proceedings. Biological Sciences, 289(1987), 20221910. https://doi.org/10.1098/rspb.2022.1910
Granger, Jesse, and Sönke Johnsen. “Collective movement as a solution to noisy navigation and its vulnerability to population loss.Proceedings. Biological Sciences 289, no. 1987 (November 2022): 20221910. https://doi.org/10.1098/rspb.2022.1910.
Granger J, Johnsen S. Collective movement as a solution to noisy navigation and its vulnerability to population loss. Proceedings Biological sciences. 2022 Nov;289(1987):20221910.
Granger, Jesse, and Sönke Johnsen. “Collective movement as a solution to noisy navigation and its vulnerability to population loss.Proceedings. Biological Sciences, vol. 289, no. 1987, Nov. 2022, p. 20221910. Epmc, doi:10.1098/rspb.2022.1910.
Granger J, Johnsen S. Collective movement as a solution to noisy navigation and its vulnerability to population loss. Proceedings Biological sciences. 2022 Nov;289(1987):20221910.
Journal cover image

Published In

Proceedings. Biological sciences

DOI

EISSN

1471-2954

ISSN

0962-8452

Publication Date

November 2022

Volume

289

Issue

1987

Start / End Page

20221910

Related Subject Headings

  • Spatial Navigation
  • Sensation
  • Movement
  • Cues
  • Animals
  • Animal Migration
  • 41 Environmental sciences
  • 31 Biological sciences
  • 30 Agricultural, veterinary and food sciences
  • 11 Medical and Health Sciences