Biologging tags reveal links between fine-scale horizontal and vertical movement behaviours in tiger sharks (Galeocerdo cuvier)

Samantha Andrzejaczek, Adrian C. Gleiss, Karissa O. Lear, Charitha B. Pattiaratchi, Taylor Chapple, Mark Meekan

Research output: Contribution to journalArticle

Abstract

An understanding of the role that large marine predators play in structuring trophic flow and nutrient cycling in marine ecosystems requires knowledge of their fine-scale (m-km) movement behaviours. In this study, biologging tags were used to reveal new insights into the three-dimensional fine-scale movement ecology of tiger sharks (Galeocerdo cuvier) at Ningaloo Reef, Western Australia. Tags deployed on 21 sharks in April-May 2017 for durations of 5-48 hours recorded both physical parameters such as depth and temperature, and, through the use of accelerometers, gyroscopes and compasses, in-situ measurements of animal trajectory and locomotion. Animal-borne-video enabled the validation of behavioural signatures, mapping of habitat, and recording of interactions with prey. Collectively, these data were used to examine the link between vertical (oscillations) and horizontal (tortuosity) movements, and link sensor data to prey interactions recorded by the video. This biologging approach revealed complex movements that would otherwise be invisible within the time-depth records provided by traditional tagging techniques. The rate of horizontal turning was not related to vertical oscillations, suggesting that vertical movements occur independently of searching behaviours in tiger sharks. These animals displayed tortuous movements possibly associated with prey searching for 27% of their tracks, and interactions with prey elicited varied responses including highly tortuous paths and burst movements. Accurate speed measurements and GPS anchor points will considerably enhance the value of magnetometer data in future studies by facilitating more accurate dead-reckoning and geo-referencing of area-restricted search behaviours.

Original languageEnglish
Article number229
JournalFrontiers in Marine Science
Volume6
Issue numberAPR
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Galeocerdo cuvier
vertical movement
shark
Animals
oscillation
searching behavior
animals
Aquatic ecosystems
Reefs
Gyroscopes
Magnetometers
Ecology
Anchors
sharks
Accelerometers
Western Australia
Nutrients
biogeochemical cycles
trajectories
locomotion

Cite this

Andrzejaczek, Samantha ; Gleiss, Adrian C. ; Lear, Karissa O. ; Pattiaratchi, Charitha B. ; Chapple, Taylor ; Meekan, Mark. / Biologging tags reveal links between fine-scale horizontal and vertical movement behaviours in tiger sharks (Galeocerdo cuvier). In: Frontiers in Marine Science. 2019 ; Vol. 6, No. APR.
@article{e849ec3a51a94a1699380b748d857c31,
title = "Biologging tags reveal links between fine-scale horizontal and vertical movement behaviours in tiger sharks (Galeocerdo cuvier)",
abstract = "An understanding of the role that large marine predators play in structuring trophic flow and nutrient cycling in marine ecosystems requires knowledge of their fine-scale (m-km) movement behaviours. In this study, biologging tags were used to reveal new insights into the three-dimensional fine-scale movement ecology of tiger sharks (Galeocerdo cuvier) at Ningaloo Reef, Western Australia. Tags deployed on 21 sharks in April-May 2017 for durations of 5-48 hours recorded both physical parameters such as depth and temperature, and, through the use of accelerometers, gyroscopes and compasses, in-situ measurements of animal trajectory and locomotion. Animal-borne-video enabled the validation of behavioural signatures, mapping of habitat, and recording of interactions with prey. Collectively, these data were used to examine the link between vertical (oscillations) and horizontal (tortuosity) movements, and link sensor data to prey interactions recorded by the video. This biologging approach revealed complex movements that would otherwise be invisible within the time-depth records provided by traditional tagging techniques. The rate of horizontal turning was not related to vertical oscillations, suggesting that vertical movements occur independently of searching behaviours in tiger sharks. These animals displayed tortuous movements possibly associated with prey searching for 27{\%} of their tracks, and interactions with prey elicited varied responses including highly tortuous paths and burst movements. Accurate speed measurements and GPS anchor points will considerably enhance the value of magnetometer data in future studies by facilitating more accurate dead-reckoning and geo-referencing of area-restricted search behaviours.",
keywords = "Behaviour, Predator-prey interactions, Top predator, Tortuosity, Vertical movement",
author = "Samantha Andrzejaczek and Gleiss, {Adrian C.} and Lear, {Karissa O.} and Pattiaratchi, {Charitha B.} and Taylor Chapple and Mark Meekan",
year = "2019",
month = "1",
day = "1",
doi = "10.3389/fmars.2019.00229",
language = "English",
volume = "6",
journal = "Frontiers in Marine Science",
issn = "2296-7745",
publisher = "Frontiers Media SA",
number = "APR",

}

Biologging tags reveal links between fine-scale horizontal and vertical movement behaviours in tiger sharks (Galeocerdo cuvier). / Andrzejaczek, Samantha; Gleiss, Adrian C.; Lear, Karissa O.; Pattiaratchi, Charitha B.; Chapple, Taylor; Meekan, Mark.

In: Frontiers in Marine Science, Vol. 6, No. APR, 229, 01.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Biologging tags reveal links between fine-scale horizontal and vertical movement behaviours in tiger sharks (Galeocerdo cuvier)

AU - Andrzejaczek, Samantha

AU - Gleiss, Adrian C.

AU - Lear, Karissa O.

AU - Pattiaratchi, Charitha B.

AU - Chapple, Taylor

AU - Meekan, Mark

PY - 2019/1/1

Y1 - 2019/1/1

N2 - An understanding of the role that large marine predators play in structuring trophic flow and nutrient cycling in marine ecosystems requires knowledge of their fine-scale (m-km) movement behaviours. In this study, biologging tags were used to reveal new insights into the three-dimensional fine-scale movement ecology of tiger sharks (Galeocerdo cuvier) at Ningaloo Reef, Western Australia. Tags deployed on 21 sharks in April-May 2017 for durations of 5-48 hours recorded both physical parameters such as depth and temperature, and, through the use of accelerometers, gyroscopes and compasses, in-situ measurements of animal trajectory and locomotion. Animal-borne-video enabled the validation of behavioural signatures, mapping of habitat, and recording of interactions with prey. Collectively, these data were used to examine the link between vertical (oscillations) and horizontal (tortuosity) movements, and link sensor data to prey interactions recorded by the video. This biologging approach revealed complex movements that would otherwise be invisible within the time-depth records provided by traditional tagging techniques. The rate of horizontal turning was not related to vertical oscillations, suggesting that vertical movements occur independently of searching behaviours in tiger sharks. These animals displayed tortuous movements possibly associated with prey searching for 27% of their tracks, and interactions with prey elicited varied responses including highly tortuous paths and burst movements. Accurate speed measurements and GPS anchor points will considerably enhance the value of magnetometer data in future studies by facilitating more accurate dead-reckoning and geo-referencing of area-restricted search behaviours.

AB - An understanding of the role that large marine predators play in structuring trophic flow and nutrient cycling in marine ecosystems requires knowledge of their fine-scale (m-km) movement behaviours. In this study, biologging tags were used to reveal new insights into the three-dimensional fine-scale movement ecology of tiger sharks (Galeocerdo cuvier) at Ningaloo Reef, Western Australia. Tags deployed on 21 sharks in April-May 2017 for durations of 5-48 hours recorded both physical parameters such as depth and temperature, and, through the use of accelerometers, gyroscopes and compasses, in-situ measurements of animal trajectory and locomotion. Animal-borne-video enabled the validation of behavioural signatures, mapping of habitat, and recording of interactions with prey. Collectively, these data were used to examine the link between vertical (oscillations) and horizontal (tortuosity) movements, and link sensor data to prey interactions recorded by the video. This biologging approach revealed complex movements that would otherwise be invisible within the time-depth records provided by traditional tagging techniques. The rate of horizontal turning was not related to vertical oscillations, suggesting that vertical movements occur independently of searching behaviours in tiger sharks. These animals displayed tortuous movements possibly associated with prey searching for 27% of their tracks, and interactions with prey elicited varied responses including highly tortuous paths and burst movements. Accurate speed measurements and GPS anchor points will considerably enhance the value of magnetometer data in future studies by facilitating more accurate dead-reckoning and geo-referencing of area-restricted search behaviours.

KW - Behaviour

KW - Predator-prey interactions

KW - Top predator

KW - Tortuosity

KW - Vertical movement

UR - http://www.scopus.com/inward/record.url?scp=85064719825&partnerID=8YFLogxK

U2 - 10.3389/fmars.2019.00229

DO - 10.3389/fmars.2019.00229

M3 - Article

VL - 6

JO - Frontiers in Marine Science

JF - Frontiers in Marine Science

SN - 2296-7745

IS - APR

M1 - 229

ER -