Data

High predation of marine turtle hatchlings near a coastal jetty, Thevenard Island, Western Australia

Australian Institute of Marine Science
Australian Institute of Marine Science (AIMS)
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://apps.aims.gov.au/metadata/view/6a2eb0bb-feb8-4729-bfa0-610ec4222553&rft.title=High predation of marine turtle hatchlings near a coastal jetty, Thevenard Island, Western Australia&rft.identifier=https://apps.aims.gov.au/metadata/view/6a2eb0bb-feb8-4729-bfa0-610ec4222553&rft.publisher=Australian Institute of Marine Science (AIMS)&rft.description=We used passive acoustic telemetry to examine the effects of a jetty and artificial light on the rates of predation of flatback turtle (Natator depressus) hatchlings as they disperse through nearshore waters. A total of 61 hatchlings were released, 30 of which were released when artificial lights were present on the jetty. Predation rates were high, irrespective of the presence or absence of artificial light. Around 72% of the tagged hatchlings were predated before they could transit the nearshore. Evidence for predation was provided by tag detachment, likely due to prey handling by a predator or the extensive movement of the tags within the receiver array suggesting that the tag (and hatchling) was inside the stomach of a predator. This allowed us to track the movement of the hatchling predators. We found that 70% of the fish predators that consumed tags used the jetty as a refuge during the day and moved along nearshore waters at night. Our study shows how industrial development and the creation of nearshore structures such as jetties may have unintended consequences and pose a significant threat to populations of vulnerable species.Maintenance and Update Frequency: notPlannedStatement: Data description: Tag detections and locations Hatchling measurements Hatchling release location Receiver locations Oceanographic data Funding Body: Department of Biodiversity, Conservation and Attractions (DBCA). P. Wilson was supported by an Australian Government Research Training Program (RTP) Scholarship and a top-up scholarship from The University of Western Australia (UWA).&rft.creator=Australian Institute of Marine Science (AIMS) &rft.date=2025&rft.coverage=westlimit=114.87390518188478; southlimit=-21.530854985492223; eastlimit=115.09946823120119; northlimit=-21.37747868968408&rft.coverage=westlimit=114.87390518188478; southlimit=-21.530854985492223; eastlimit=115.09946823120119; northlimit=-21.37747868968408&rft_rights=Creative Commons Attribution-NonCommercial 3.0 Australia License http://creativecommons.org/licenses/by-nc/3.0/au/&rft_rights=Use Limitation: All AIMS data, products and services are provided as is and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.&rft_rights=Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: Australian Institute of Marine Science (AIMS). (2019). High predation of marine turtle hatchlings near a coastal jetty, Thevenard Island, Western Australia. https://apps.aims.gov.au/metadata/view/6a2eb0bb-feb8-4729-bfa0-610ec4222553, accessed[date-of-access].&rft_subject=oceans&rft.type=dataset&rft.language=English Access the data
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Creative Commons Attribution-NonCommercial 3.0 Australia License
http://creativecommons.org/licenses/by-nc/3.0/au/

Use Limitation: All AIMS data, products and services are provided "as is" and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.

Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: "Australian Institute of Marine Science (AIMS). (2019). High predation of marine turtle hatchlings near a coastal jetty, Thevenard Island, Western Australia. https://apps.aims.gov.au/metadata/view/6a2eb0bb-feb8-4729-bfa0-610ec4222553, accessed[date-of-access]".

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Brief description

We used passive acoustic telemetry to examine the effects of a jetty and artificial light on the rates of predation of flatback turtle (Natator depressus) hatchlings as they disperse through nearshore waters. A total of 61 hatchlings were released, 30 of which were released when artificial lights were present on the jetty. Predation rates were high, irrespective of the presence or absence of artificial light. Around 72% of the tagged hatchlings were predated before they could transit the nearshore. Evidence for predation was provided by tag detachment, likely due to prey handling by a predator or the extensive movement of the tags within the receiver array suggesting that the tag (and hatchling) was inside the stomach of a predator. This allowed us to track the movement of the hatchling predators. We found that 70% of the fish predators that consumed tags used the jetty as a refuge during the day and moved along nearshore waters at night. Our study shows how industrial development and the creation of nearshore structures such as jetties may have unintended consequences and pose a significant threat to populations of vulnerable species.

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Maintenance and Update Frequency: notPlanned
Statement: Data description: Tag detections and locations Hatchling measurements Hatchling release location Receiver locations Oceanographic data Funding Body: Department of Biodiversity, Conservation and Attractions (DBCA). P. Wilson was supported by an Australian Government Research Training Program (RTP) Scholarship and a top-up scholarship from The University of Western Australia (UWA).

Notes

Credit
Pendoley Environmental, Australia
Credit
University of Western Australia (UWA), Australia
Credit
Department of Biodiversity, Conservation and Attractions (DBCA), Australia

Modified: 23 06 2025

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115.09947,-21.37748 115.09947,-21.53085 114.87391,-21.53085 114.87391,-21.37748 115.09947,-21.37748

114.98668670654,-21.454166837588

text: westlimit=114.87390518188478; southlimit=-21.530854985492223; eastlimit=115.09946823120119; northlimit=-21.37747868968408

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  • global : 6a2eb0bb-feb8-4729-bfa0-610ec4222553