Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/61446
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: To go or not to go with the flow: Environmental influences on whale shark movement patterns
Author: Sleeman, J.
Meekan, M.
Wilson, S.
Polovina, J.
Stevens, J.
Boggs, G.
Bradshaw, C.
Citation: Journal of Experimental Marine Biology and Ecology, 2010; 390(2):84-98
Publisher: Elsevier Science BV
Issue Date: 2010
ISSN: 0022-0981
1879-1697
Statement of
Responsibility: 
Jai C. Sleeman, Mark G. Meekan, Steven G. Wilson, Jeffrey J. Polovina, John D. Stevens, Guy S. Boggs, Corey J.A. Bradshaw
Abstract: Seven whale sharks were tracked using satellite-linked tags from Ningaloo Reef, off northern Western Australia, following tagging in April and June 2002 and April-May 2005. We investigated how the movements of those whale shark tracks were influenced by geostrophic surface currents during sequential one-week periods by using a passive diffusion model parameterised with observed starting locations of the sharks and weekly maps of surface current velocity and direction (derived from altimetry). We compared the outputs from the passive diffusion model and maps of chlorophyll-a concentration (SeaWiFs/MODIS) and with the actual tracks of the sharks using GIS and generalized linear mixed-effects models (GLMM). The GLMM indicated very little support for passive diffusion with sea-surface ocean currents influencing whale shark distributions in the north eastern Indian Ocean. Moreover, the sharks' movements correlated only weakly with the spatial distribution of sea-surface chlorophyll-a concentrations. The seven whale sharks had average swimming speeds comparable with those recorded in other satellite tracking studies of this species. Swimming speeds of the seven sharks were similar to those reported in previous studies and up to three times greater than the maximum sea-surface current velocities that the sharks encountered while traversing into lower southerly latitudes (moving northward towards the equator). Our results indicate that whale sharks departing from Ningaloo travel actively and independently of near-surface currents where they spend most of their time despite additional metabolic costs of this behaviour. © 2010 Elsevier B.V. All rights reserved.
Keywords: Geostrophic currents
Migration
Oceanography
Passive diffusion model
Rhincodon typus
Satellite tracking
Rights: Copyright © 2010 Elsevier B.V. All rights reserved.
DOI: 10.1016/j.jembe.2010.05.009
Appears in Collections:Aurora harvest 5
Earth and Environmental Sciences publications
Environment Institute Leaders publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.