Seasonality and site fidelity of the zebra shark, Stegostoma fasciatum, in southeast Queensland, Australia

Dudgeon, Christine L., Lanyon, Janet M. and Semmens, Jayson M. (2013) Seasonality and site fidelity of the zebra shark, Stegostoma fasciatum, in southeast Queensland, Australia. Animal Behaviour, 85 2: 471-481. doi:10.1016/j.anbehav.2012.12.013


 
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Author Dudgeon, Christine L.
Lanyon, Janet M.
Semmens, Jayson M.
Title Seasonality and site fidelity of the zebra shark, Stegostoma fasciatum, in southeast Queensland, Australia
Formatted title
Seasonality and site fidelity of the zebra shark, Stegostoma fasciatum, in southeast Queensland, Australia
Journal name Animal Behaviour   Check publisher's open access policy
ISSN 0003-3472
1095-8282
Publication date 2013-02-01
Sub-type Article (original research)
DOI 10.1016/j.anbehav.2012.12.013
Volume 85
Issue 2
Start page 471
End page 481
Total pages 11
Place of publication London, United Kingdom
Publisher Elsevier
Collection year 2014
Language eng
Abstract Site fidelity and migratory movements of vertebrate animals occur at many spatial and temporal scales. Larger migratory movements tend to occur in species that live in seasonal environments in which food supplies vary markedly, while species found in thermally stable environments are more site-attached. In the marine environment, seasonal migrations are often associated with predictable temporary aggregations that have largely been targeted for exploitation. We employed passive acoustic telemetry to investigate inter- and intraseasonal site fidelity of zebra sharks to an aggregation site in southeast Queensland, Australia, close to the southern latitudinal extent of this species' range. We tracked 10 zebra sharks over two aggregation seasons (21 months). We applied a generalized linear mixed-effects model to investigate the presence/absence of these zebra sharks with respect to several environmental variables. We found that different environmental factors were associated with site fidelity of zebra sharks at different temporal levels and that these may be indicative of the mechanisms driving the movements. Seasonal patterns may be driven by endogenous systems, and cues such as photoperiod and water temperature are likely to be important. Intraseasonal patterns are more likely to be indicative of direct behavioural responses to changes in environmental conditions such as increased wave heights, as well as foraging bouts away from a core refuge. Understanding the relative contributions of these environmental parameters, as well as biological factors, will be important for making predictions of site fidelity and movements of migratory marine vertebrates under differing future scenarios such as increases in sea temperature.
Keyword Acoustic telemetry
Elasmobranch
GLMM
Leopard shark
Migration movement
Philopatry
Stegostoma fasciatum
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Biological Sciences Publications
School of Veterinary Science Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
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