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Influence of shark tourism on the activity and physiological condition of a non-focal pelagic fish1.28 MB
Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Influence of shark tourism on the activity and physiological condition of a non-focal pelagic fish
ICES journal of marine science, Vol.2023, pp.1-13
27/06/2023
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Abstract
Wildlife tourism can have adverse effects on the behaviours and movements of animals, with implications for the health and fitness of individuals and populations. We used acoustic-tracking to show that food-based attractants used in shark-tourism increases activity (15%) and burst behaviours (60%) in yellowtail kingfish (Seriola lalandi, n = 18). Increased activity was restricted to periods when kingfish were on the same side of the island group as berleying tourism vessels, but decreased after operators left the site. Despite the raised activity and frequency of burst swimming events, the physiological condition of kingfish (n = 39, 6 tagged, and 33 untagged) measured using bioelectrical impedance analysis remained consistent with kingfish from control sites not exposed to tourism. This suggests that kingfish were able to compensate raised energy expenditure by feeding on bait and berley used by operators or through natural foraging. We highlight that the effects of provisioning from wildlife tourism can extend beyond changes in behaviours and movements and can additionally influence the energetic condition of non-focal animals through increased activity. However, supplemental food-sources provided through wildlife tourism may be sufficient to compensate for the increased energy expenditure and lessen the effects of tourism on individual fitness and health.
Details
- Title
- Influence of shark tourism on the activity and physiological condition of a non-focal pelagic fish
- Creators
- Thomas M Clarke - Flinders UniversitySasha K Whitmarsh - Flinders UniversityCurtis Champion - Southern Cross UniversityHugh Pederson - InnovaSea Systems (United States)Lauren Meyer - Flinders UniversityJoshua D Dennis - Flinders UniversityRoss G Dwyer - University of the Sunshine CoastCharlie Huveneers - Flinders University
- Publication Details
- ICES journal of marine science, Vol.2023, pp.1-13
- Publisher
- Oxford University Press
- Grant note
- This study was funded by the Holsworth Wildlife Research Endowment (Project Number 3000010613), and the Biology Society of South Australia (2018 Annual Field Grant).
- Identifiers
- 991013129481802368
- Copyright
- © The Author(s) 2023. Published by Oxford University Press on behalf of International Council for the Exploration of the Sea. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article