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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

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posted on 2023-05-21, 15:16 authored by Berenshtein, I, Faillettaz, R, Irisson, J-O, Kiflawi, M, Siebeck, UE, Jeffrey LeisJeffrey Leis, Paris, CB
The 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 Biology

Volume

5

Article number

1307

Number

1307

Pagination

1-9

ISSN

2399-3642

Department/School

Institute for Marine and Antarctic Studies

Publisher

Nature Publishing Group

Place of publication

United Kingdom

Rights 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

Socio-economic Objectives

Coastal or estuarine biodiversity; Coastal and estuarine systems and management not elsewhere classified; Rehabilitation or conservation of marine environments

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