The Dynamics of Coordinated Group Hunting and Collective Information Transfer among Schooling Prey

Handegard, Nils Olav; Boswell, Kevin M.; Ioannou, Christos C.; Leblanc, Simon P.; Tjøstheim, Dag B.; Couzin, Iain D.

The Dynamics of Coordinated Group Hunting and Collective Information Transfer among Schooling Prey

Dateien

Handegard_0-387635.pdfGröße: 1.04 MBDownloads: 256

Datum

2012

Autor:innen

Handegard, Nils Olav

Boswell, Kevin M.

Ioannou, Christos C.

Leblanc, Simon P.

Tjøstheim, Dag B.

Couzin, Iain D.

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Current Biology. 2012, 22(13), pp. 1213-1217. ISSN 0960-9822. eISSN 1879-0445. Available under: doi: 10.1016/j.cub.2012.04.050

Zusammenfassung

Predator-prey interactions are vital to the stability of many ecosystems. Yet, few studies have considered how they are mediated due to substantial challenges in quantifying behavior over appropriate temporal and spatial scales. Here, we employ high-resolution sonar imaging to track the motion and interactions among predatory fish and their schooling prey in a natural environment. In particular, we address the relationship between predator attack behavior and the capacity for prey to respond both directly and through collective propagation of changes in velocity by group members. To do so, we investigated a large number of attacks and estimated per capita risk during attack and its relation to the size, shape, and internal structure of prey groups. Predators were found to frequently form coordinated hunting groups, with up to five individuals attacking in line formation. Attacks were associated with increased fragmentation and irregularities in the spatial structure of prey groups, features that inhibit collective information transfer among prey. Prey group fragmentation, likely facilitated by predator line formation, increased (estimated) per capita risk of prey, provided prey schools were maintained below a threshold size of approximately 2 m(2). Our results highlight the importance of collective behavior to the strategies employed by both predators and prey under conditions of considerable informational constraints.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

HANDEGARD, Nils Olav, Kevin M. BOSWELL, Christos C. IOANNOU, Simon P. LEBLANC, Dag B. TJØSTHEIM, Iain D. COUZIN, 2012. The Dynamics of Coordinated Group Hunting and Collective Information Transfer among Schooling Prey. In: Current Biology. 2012, 22(13), pp. 1213-1217. ISSN 0960-9822. eISSN 1879-0445. Available under: doi: 10.1016/j.cub.2012.04.050

BibTex

@article{Handegard2012Dynam-37056,
  year={2012},
  doi={10.1016/j.cub.2012.04.050},
  title={The Dynamics of Coordinated Group Hunting and Collective Information Transfer among Schooling Prey},
  number={13},
  volume={22},
  issn={0960-9822},
  journal={Current Biology},
  pages={1213--1217},
  author={Handegard, Nils Olav and Boswell, Kevin M. and Ioannou, Christos C. and Leblanc, Simon P. and Tjøstheim, Dag B. and Couzin, Iain D.}
}

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