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Published (Version of record)CC BY-NC-ND V4.0, Open Access
Published (Version of record)CC BY-NC-ND V4.0, Open
Journal article
Are sharks attracted to caged fish and associated infrastructure?
Marine & freshwater research, Vol.online early
25/07/2022
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Source: InCites
Abstract
There are increasing concerns over the possible effects of aquaculture pens on the local abundance and residency of sharks, and its associated risk for shark bites at nearby beaches and surf breaks. We used acoustic tracking and a before–during–after–control–impact design to assess the residency and local abundance of 117 bronze whalers and 843 white sharks around a 45-m-diameter aquaculture pen installed in South Australia for tourism purposes. Only 14 bronze whalers (12.0% of individuals tagged) and nine white sharks (1.1% of individuals tagged) were detected throughout the 5-year monitoring period and there was no evidence of the pen affecting these sharks, in either the number of sharks detected or number of detections (proxy for length of time detected). The low amount of interactions with the pen was likely to be due to a combination of low fish biomass, pen installed in a shallow location, local shark species being migratory species, and good husbandry practices. Adequate planning and management, and good husbandry practices, such as removal of dead fish from pens and avoiding over-feeding to ensure the feed is entirely consumed, are key to reducing shark interactions with cage fish and associated infrastructure.
Details
- Title
- Are sharks attracted to caged fish and associated infrastructure?
- Creators
- Charlie Huveneers - Flinders UniversityYuri Niella - Flinders UniversityMichael Drew - Flinders UniversityJoshua Dennis - Flinders UniversityThomas M Clarke - Flinders UniversityAlison Wright - Department of Environment Water and Natural ResourcesSimon Bryars - Department of Environment Water and Natural ResourcesMatias Braccini - Department of Primary Industries and Regional DevelopmentChris Dowling - Department of Primary Industries and Regional DevelopmentStephen J Newman - Department of Primary Industries and Regional DevelopmentPaul Allan Butcher - Southern Cross University, National Marine Science CentreScott Dalton - NSW Department of Primary Industries
- Publication Details
- Marine & freshwater research, Vol.online early
- Publisher
- CSIRO
- Grant note
- Funding was provided through an Australian Research Council Linkage Project grant (LP120100652), the South Australian Department for Environment and Water, the Australian Fisheries Research and Development Corporation (FRDC grant number 2010/003 and 2012/020), the Adelaide and Mount Lofty Ranges Natural Resources Management Board, the Neiser Foundation, the Nature Foundation of South Australia Inc, the Department of Primary Industries and Regional Development, Government of Western Australia, Tracking Research for Animal Conservation Society (TRACS), and NSW Government through the Shark Management Strategy.
- Identifiers
- 991013053813002368
- Copyright
- © 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article