154519 - Evidence for a consistent use of external cues by marine fish.pdf (1.15 MB)
Evidence for a consistent use of external cues by marine fish larvae for orientation
journal contribution
posted on 2023-05-21, 15:16 authored by Berenshtein, I, Faillettaz, R, Irisson, J-O, Kiflawi, M, Siebeck, UE, Jeffrey LeisJeffrey Leis, Paris, CBThe larval stage is the main dispersive process of most marine teleost species. The degree to which larval behavior controls dispersal has been a subject of debate. Here, we apply a cross-species meta-analysis, focusing on the fundamental question of whether larval fish use external cues for directional movement (i.e., directed movement). Under the assumption that directed movement results in straighter paths (i.e., higher mean vector lengths) compared to undirected, we compare observed patterns to those expected under undirected pattern of Correlated Random Walk (CRW). We find that the bulk of larvae exhibit higher mean vector lengths than those expected under CRW, suggesting the use of external cues for directional movement. We discuss special cases which diverge from our assumptions. Our results highlight the potential contribution of orientation to larval dispersal outcomes. This finding can improve the accuracy of larval dispersal models, and promote a sustainable management of marine resources.
History
Publication title
Communications BiologyVolume
5Article number
1307Number
1307Pagination
1-9ISSN
2399-3642Department/School
Institute for Marine and Antarctic StudiesPublisher
Nature Publishing GroupPlace of publication
United KingdomRights statement
© 2022 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). https://creativecommons.org/licenses/by/4.0/Repository Status
- Open