دورية أكاديمية
أعرض في EDS

Links between the three-dimensional movements of whale sharks (Rhincodon typus) and the bio-physical environment off a coral reef.

التفاصيل البيبلوغرافية
العنوان: Links between the three-dimensional movements of whale sharks (Rhincodon typus) and the bio-physical environment off a coral reef.
المؤلفون: D'Antonio B; Oceans Graduate School and the UWA Oceans Institute, The University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia. Ben.dantonio@research.uwa.edu.au.; Australian Institute of Marine Science, Indian Ocean Marine Research Centre, University of Western Australia, Perth, WA, Australia. Ben.dantonio@research.uwa.edu.au., Ferreira LC; Australian Institute of Marine Science, Indian Ocean Marine Research Centre, University of Western Australia, Perth, WA, Australia., Meekan M; The Oceans Institute, University of Western Australia, Perth, WA, Australia., Thomson PG; Oceans Graduate School and the UWA Oceans Institute, The University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia., Lieber L; Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth, PL1 2PB, UK., Virtue P; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia.; CSIRO Environment, Battery Point, TAS, 7004, Australia., Power C; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia., Pattiaratchi CB; Oceans Graduate School and the UWA Oceans Institute, The University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia., Brierley AS; Pelagic Ecology Research Group, Scottish Oceans Institute, Gatty Marine Laboratory, School of Biology, University of St. Andrews, St Andrews, KY16 8LB, Scotland, UK., Sequeira AMM; The Oceans Institute, University of Western Australia, Perth, WA, Australia.; Research School of Biology, Division of Ecology and Evolution, The Australian National University, 46 Sullivans Creek Road, Canberra, ACT, 2600, Australia., Thums M; Australian Institute of Marine Science, Indian Ocean Marine Research Centre, University of Western Australia, Perth, WA, Australia.
المصدر: Movement ecology [Mov Ecol] 2024 Jan 31; Vol. 12 (1), pp. 10. Date of Electronic Publication: 2024 Jan 31.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: BioMed Central Country of Publication: England NLM ID: 101635009 Publication Model: Electronic Cited Medium: Print ISSN: 2051-3933 (Print) Linking ISSN: 20513933 NLM ISO Abbreviation: Mov Ecol Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: London : BioMed Central, 2013-
مستخلص: Background: Measuring coastal-pelagic prey fields at scales relevant to the movements of marine predators is challenging due to the dynamic and ephemeral nature of these environments. Whale sharks (Rhincodon typus) are thought to aggregate in nearshore tropical waters due to seasonally enhanced foraging opportunities. This implies that the three-dimensional movements of these animals may be associated with bio-physical properties that enhance prey availability. To date, few studies have tested this hypothesis.
Methods: Here, we conducted ship-based acoustic surveys, net tows and water column profiling (salinity, temperature, chlorophyll fluorescence) to determine the volumetric density, distribution and community composition of mesozooplankton (predominantly euphausiids and copepods) and oceanographic properties of the water column in the vicinity of whale sharks that were tracked simultaneously using satellite-linked tags at Ningaloo Reef, Western Australia. Generalised linear mixed effect models were used to explore relationships between the 3-dimensional movement behaviours of tracked sharks and surrounding prey fields at a spatial scale of ~ 1 km.
Results: We identified prey density as a significant driver of horizontal space use, with sharks occupying areas along the reef edge where densities were highest. These areas were characterised by complex bathymetry such as reef gutters and pinnacles. Temperature and salinity profiles revealed a well-mixed water column above the height of the bathymetry (top 40 m of the water column). Regions of stronger stratification were associated with reef gutters and pinnacles that concentrated prey near the seabed, and entrained productivity at local scales (~ 1 km). We found no quantitative relationship between the depth use of sharks and vertical distributions of horizontally averaged prey density. Whale sharks repeatedly dove to depths where spatially averaged prey concentration was highest but did not extend the time spent at these depth layers.
Conclusions: Our work reveals previously unrecognized complexity in interactions between whale sharks and their zooplankton prey.
(© 2024. The Author(s).)
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فهرسة مساهمة: Keywords: 3D utilisation distribution; Bio-physical drivers; Foraging ecology; Habitat use; Marine megafauna; Oceanography; Predator–prey; Zooplankton
تواريخ الأحداث: Date Created: 20240131 Latest Revision: 20240202
رمز التحديث: 20240202
مُعرف محوري في PubMed: PMC10829290
DOI: 10.1186/s40462-024-00452-2
PMID: 38297368
قاعدة البيانات: MEDLINE
الوصف
تدمد:2051-3933
DOI:10.1186/s40462-024-00452-2