Skip to content

Research at St Andrews

Activity seascapes highlight central place foraging strategies in marine predators that never stop swimming

Research output: Contribution to journalArticle

Author(s)

Yannis Papastamatiou, Yuuki Watanabe, Urska Demsar, Vianey Leos-Barajas, Darcy Bradley, Roland Langrock, Kevin Weng, Christopher Lowe, Alan Friedlander, Jennifer Caselle

School/Research organisations

Abstract

Background:  Central place foragers (CPF) rest within a central place, and theory predicts that distance of patches from this central place sets the outer limits of the foraging arena. Many marine ectothermic predators behave like CPF animals, but never stop swimming, suggesting that predators will incur ‘travelling’ costs while resting. Currently, it is unknown how these CPF predators behave or how modulation of behavior contributes to daily energy budgets. We combine acoustic telemetry, multi-sensor loggers, and hidden Markov models (HMMs) to generate ‘activity seascapes’, which combine space use with patterns of activity, for reef sharks (blacktip reef and grey reef sharks) at an unfished Pacific atoll.

Results:  Sharks of both species occupied a central place during the day within deeper, cooler water where they were less active, and became more active over a larger area at night in shallower water. However, video cameras on two grey reef sharks revealed foraging attempts/success occurring throughout the day, and that multiple sharks were refuging in common areas. A simple bioenergetics model for grey reef sharks predicted that diel changes in energy expenditure are primarily driven by changes in swim speed and not body temperature.

Conclusions:  We provide a new method for simultaneously visualizing diel space use and behavior in marine predators, which does not require the simultaneous measure of both from each animal. We show that blacktip and grey reef sharks behave as CPFs, with diel changes in activity, horizontal and vertical space use. However, aspects of their foraging behavior may differ from other predictions of traditional CPF models. In particular, for species that never stop swimming, patch foraging times may be unrelated to patch travel distance.
Close

Details

Original languageEnglish
Article number9
Number of pages15
JournalMovement Ecology
Volume6
DOIs
StatePublished - 21 Jun 2018

    Research areas

  • Sharks, Acceleration, Hidden Markov models, Coral reefs, Foraging, Telemetry

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Introduction to the special section on Visual Movement Analytics

    Demšar, U. D., Slingsby, A. & Weibel, R. 8 Nov 2018 In : Information Visualization. Online First, 5 p.

    Research output: Contribution to journalEditorial

  2. Weather effects on human mobility: a study using multi-channel sequence analysis

    Brum-Bastos, V. S., Long, J. A. & Demsar, U. 23 May 2018 In : Computers, Environment and Urban Systems. In press, 22 p.

    Research output: Contribution to journalArticle

  3. Revisiting the past: replicating fifty-year-old flow analysis using contemporary taxi flow data

    Demsar, U., Reades, J., Manley, E. & Batty, M. 2018 In : Annals of the American Association of Geographers. 108, 3, p. 811-828 19 p.

    Research output: Contribution to journalArticle

  4. Using geographically weighted choice models to account for the spatial heterogeneity of preferences

    Budzinski, W., Campbell, D., Czajkowski, M., Demsar, U. & Hanley, N. 29 Dec 2017 In : Journal of Agricultural Economics. Early View

    Research output: Contribution to journalArticle

Related by journal

  1. Summer at the beach: spatio-temporal patterns of white shark occurrence along the inshore areas of False Bay, South Africa

    Kock, A. A., Photopoulou, T., Durbach, I., Mauff, K., Meÿer, M., Kotze, D., Griffiths, C. & O'Riain, M. J. 22 May 2018 In : Movement Ecology. 6, 13 p., 7

    Research output: Contribution to journalArticle

  2. Navigating uncertain waters: a critical review of inferring foraging behaviour from location and dive data in pinnipeds

    Carter, M. I. D., Bennett, K. A., Embling, C. B., Hosegood, P. J. & Russell, D. J. F. 26 Oct 2016 In : Movement Ecology. 4, 20 p., 25

    Research output: Contribution to journalReview article

  3. A path reconstruction method integrating dead-reckoning and position fixes applied to humpback whales

    Wensveen, P. J., Thomas, L. & Miller, P. J. O. 21 Sep 2015 In : Movement Ecology. 3, 16 p., 31

    Research output: Contribution to journalArticle

  4. Analysis and visualisation of movement: an interdisciplinary review

    Demsar, U., Buchin, K., Cagnacci, F., Safi, K., Speckmann, B., Van de Weghe, N., Weiskopf, D. & Weibel, R. 10 Mar 2015 In : Movement Ecology. 3, 5, 24 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Movement Ecology (Journal)

    Cresswell, W. (Reviewer)
    30 Aug 2018

    Activity: Publication peer-review and editorial workPeer review of manuscripts

ID: 253210438