Spatial Dynamics and Fine-Scale Vertical Behaviour of Immature Eastern Australasian White Sharks (Carcharodon carcharias)

Julia LY Spaet; Paul A Butcher; Andrea Manica; Chi Hin Lam

doi:10.17863/CAM.91501

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Spatial Dynamics and Fine-Scale Vertical Behaviour of Immature Eastern Australasian White Sharks (Carcharodon carcharias)

Journal article

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Peer reviewed

Spatial Dynamics and Fine-Scale Vertical Behaviour of Immature Eastern Australasian White Sharks (Carcharodon carcharias)

Julia LY Spaet, Paul A Butcher, Andrea Manica and Chi Hin Lam

Biology : open access journal, pp.1-18

22/11/2022

DOI: https://doi.org/10.17863/CAM.91501

Appears in Recent Faculty of Science and Engineering Publications

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Abstract

archival tag

Australia

deep diving

diel behaviour

elasmobranch

migration

Pacific Ocean

satellite telemetry

vertical migration

Knowledge of the 3-dimensional space use of large marine predators is central to our understanding of ecosystem dynamics and for the development of management recommendations. Horizontal movements of white sharks, Carcharodon carcharias, in eastern Australian and New Zealand waters have been relatively well studied, yet vertical habitat use is less well understood. We dual-tagged 27 immature white sharks with Pop-Up Satellite Archival Transmitting (PSAT) and acoustic tags in New South Wales coastal shelf waters. In addition, 19 of these individuals were also fitted with Smart Position or Temperature Transmitting (SPOT) tags. PSATs of 12 sharks provided useable data; four tags were recovered, providing highly detailed archival data recorded at 3-s intervals. Horizontal movements ranged from southern Queensland to southern Tasmania and New Zealand. Sharks made extensive use of the water column (0-632 m) and experienced a broad range of temperatures (7.8-28.9 °C). Archival records revealed pronounced diel-patterns in distinct fine-scale oscillatory behaviour, with sharks occupying relatively constant depths during the day and exhibiting pronounced yo-yo diving behaviour (vertical zig-zag swimming through the water column) during the night. Our findings provide valuable new insights into the 3-dimensional space use of Eastern Australasian (EA) white sharks and contribute to the growing body on the general ecology of immature white sharks.

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Title: Spatial Dynamics and Fine-Scale Vertical Behaviour of Immature Eastern Australasian White Sharks (Carcharodon carcharias)
Creators: Julia LY Spaet - University of Cambridge
Paul A Butcher - Southern Cross University
Andrea Manica - University of Cambridge
Chi Hin Lam
Publication Details: Biology : open access journal, pp.1-18
Publisher: MDPI AG
Identifiers: 991013075274702368
Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Academic Unit: Faculty of Science and Engineering
Language: English
Resource Type: Journal article

Spatial Dynamics and Fine-Scale Vertical Behaviour of Immature Eastern Australasian White Sharks (Carcharodon carcharias)

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