Colonization, diversity, and seasonality of fishes at pelagic fish aggregating devices.

Autor: Schneider EVC; Exuma Sound Ecosystem Research Project, Cape Eleuthera Institute, Rock Sound, Bahamas.; School of Biodiversity, One Health, and Veterinary Medicine, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, UK., Talwar BS; Exuma Sound Ecosystem Research Project, Cape Eleuthera Institute, Rock Sound, Bahamas.; Institute of Environment, Department of Biological Sciences, Florida International University, North Miami, Florida, USA.; Scripps Institution of Oceanography, University of California, San Diego, California, USA., Killen SS; School of Biodiversity, One Health, and Veterinary Medicine, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, UK., Russell S; Exuma Sound Ecosystem Research Project, Cape Eleuthera Institute, Rock Sound, Bahamas., Van Leeuwen TE; Fisheries and Oceans Canada, St. John's, Newfoundland, Canada., Bailey DM; School of Biodiversity, One Health, and Veterinary Medicine, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, UK.
Jazyk: angličtina
Zdroj: Journal of fish biology [J Fish Biol] 2024 Mar; Vol. 104 (3), pp. 825-836. Date of Electronic Publication: 2023 Dec 10.
DOI: 10.1111/jfb.15592
Abstrakt: The pelagic zone of the ocean can be a challenging environment in which to conduct research and as a result we lack the robust baseline abundance and diversity data, compared to what is available in more accessible coastal habitats, to be able to track changes or stressors to the biota in this environment. Many large-scale fisheries target pelagic fish, and much of the information available on these species is based on fisheries-dependent data that may be biased towards hotspots and commercially valuable fishes. Here, a long-term video and visual fish survey was conducted on two subsurface moored fish aggregating devices (FADs) in the pelagic waters of the central Bahamas to determine the feasibility of using moored pelagic FADs as tools for collecting fish abundance and diversity data. A wide range of species was documented, including large migratory fish that are the focus of commercial and recreational fisheries, and smaller often overlooked species on which little abundance or seasonality information exists. We found that FADs colonize quickly and reach a peak stable (albeit seasonally cyclical) abundance and diversity within the first several months after deployment. Species richness was higher in video surveys, but abundance was higher in visual surveys, except for sharks. Our results highlight the need to tailor survey methods to fit the context and study objective, and provide further evidence for the importance of fisheries-independent data in monitoring pelagic species.
(© 2023 Fisheries Society of the British Isles.)
Databáze: MEDLINE
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