Cited by 86Ichthyology and Marine BiologyWildlife Ecology and ConservationMarine animal studies overview

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

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Papastamatiou, Yannis P., Watanabe, Yuuki Y., Demšar, Urška, Leos-Barajas, Vianey, Bradley, Darcy, Langrock, Roland, Weng, Kevin, Lowe, Christopher G. +2 more·2018·Movement Ecology

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.

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Authors
Papastamatiou, Y. P., Watanabe, Y. Y., Demšar, U., Leos-Barajas, V., Bradley, D., Langrock, R., Weng, K., Lowe, C. G., Friedlander, A. M., & Caselle, J. E.
Affiliations
  • Florida International University (US)
  • The Graduate University for Advanced Studies, SOKENDAI (JP)
  • University of St Andrews (GB)
  • University of California, Santa Barbara (US)
  • Bielefeld University (DE)
  • William & Mary (US)
  • California State University, Long Beach (US)
  • University of Hawaiʻi at Mānoa (US)
Corresponding author
Demšar, Urška
Venue
Movement Ecology
Published
2018-06-21
Volume
6
Issue
1
Pages
9-9
ISSN
2051-3933 (ISSN-L)
OpenAlex
W2808150803
Cited by
86
References
48
Citations by year
2026: 2 · 2025: 8 · 2024: 10 · 2023: 10 · 2022: 12 · 2021: 24 · 2020: 10 · 2019: 6 · 2018: 3 · 2017: 1
FWCI
8.43
Type
journal article
Language
en
Open access
Locations
  • Movement Ecology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • W&M Publish (College of William & Mary) (submittedVersion)
  • St Andrews Research Repository (St Andrews Research Repository) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • NOAA Institutional Repository (submittedVersion)
  • PUB – Publications at Bielefeld University (Bielefeld University) (submittedVersion)
Funders
  • Marisla Foundation
  • Japan Society for the Promotion of Science (25850138)
  • NOAA Coral Reef Conservation Program (NA05OAR4301108)
Topics
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ichthyology and Marine Biology
  • Physical Sciences › Environmental Science › Ecology › Wildlife Ecology and Conservation
  • Physical Sciences › Environmental Science › Ecology › Marine animal studies overview
Keywords
central place foraging, reef sharks, grey reef shark, blacktip reef shark, diel activity patterns, space use, foraging behavior, energy expenditure, bioenergetics model, swimming speed, body temperature

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