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Published VersionCC BY V4.0, Open Access
Journal article
Search for the vulnerable giants: the presence of giant guitarfish and wedgefish in the Karimunjawa National Park and adjacent waters
Marine and Freshwater Research, Vol.74(16), pp.1420-1430
2023
Appears in UniSC Supported Open Access Outputs
Abstract
Context:
Giant guitarfish (Family: Glaucostegidae) and wedgefish (Family: Rhinidae) (Critically Endangered, IUCN Red List and CITES Appendix II) are highly exploited throughout their distribution because of their highly valued fins in the international market. Both are commonly caught as bycatch or secondary valuable catch in the Java Sea, including in Karimunjawa National Park, Central Java, Indonesia.
Aims:
Assess the presence and relative abundance of giant guitarfish and wedgefish species in Karimunjawa National Park and adjacent waters.
Methods:
Data were collected using baited remote underwater video (BRUV) surveys across 40 sites, covering multiple zonation areas and depth ranges. All species were identified to the species level and their relative abundance was tested with one-way PERMANOVA based on sites, zonation areas and depths.
Key results:
Two target species, Glaucostegus typus and Rhynchobatus australiae, were present in the study area with a maximum number of 3 and 6 and relative abundance of 0.0048 and 0.0096 respectively, over 477 BRUVs and 623.9 h of videos. Their presence during the study was not affected by sites, zonations or depth.
Implications:
The presence and relative abundance of both G. typus and R. australiae were low, which may be a result of decades of overfishing, and have provided the first information to the urgency of managing the species in the areas.
Details
- Title
- Search for the vulnerable giants: the presence of giant guitarfish and wedgefish in the Karimunjawa National Park and adjacent waters
- Authors
- Faqih Akbar Alghozali (Author)Muhammad Wiralaga Dwi Gustianto (Author)Ashma Hanifah (Author)Maula Nadia (Author)Widyastuti (Author)Nauvan Prabhu (Author) - Diponegoro UniversityLufni Fauzil Adhim (Author) - Padjadjaran UniversityKhansa Alifa Nurhaliza (Author) - Padjadjaran UniversityHollie Booth (Author) - University of OxfordMuhammad Ichsan (Corresponding Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringAndhika Prasetyo (Author) - National Research and Innovation AgencyNesha Ichida (Author)Mahardika Rizqi Himawan (Author) - University of Mataram
- Publication details
- Marine and Freshwater Research, Vol.74(16), pp.1420-1430
- Publisher
- C S I R O Publishing
- Date published
- 2023
- DOI
- 10.1071/MF23101
- ISSN
- 1448-6059; 1323-1650
- Copyright note
- © 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution 4.0 International License (CC BY)
- Data Availability
- The data that support this study will be shared upon reasonable request to and approval from the corresponding author.
- Grant note
- This study was performed with the funding support of MCAF Award 22-01 from the Marine Conservation Action Fund–New England Aquarium and Small Grant SOSF 560 from the Save Our Seas Foundation. This study was also performed with several GoPro cameras and equipment donated by IDEA WILD. All funding support was received by Faqih Akbar Alghozali from Elasmobranch Project Indonesia (EPI).
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99991498802621
- Output Type
- Journal article
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