Movement behaviour of released wild and farm-raised dolphinfish Coryphaena hippurus tracked by pop-up satellite archival tags

To gauge the effectiveness of supplementing native populations of dolphinfish Coryphaena hippurus , we compared farm-raised and wild fish in terms of their horizontal and vertical movement patterns, habitat preferences and thermal niche using pop-up satellite archival tags (PSATs) deployed in two di...

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Bibliographic Details
Published in:Fisheries science 2019-09, Vol.85 (5), p.779-790
Main Authors: Lin, Shian-Jhong, Musyl, Michael K., Wang, Sheng-Ping, Su, Nan-Jay, Chiang, Wei-Chuan, Lu, Ching-Ping, Tone, Kazuki, Wu, Chang-Ying, Sasaki, Akira, Nakamura, Itsumi, Komeyama, Kazuyoshi, Kawabe, Ryo
Format: Article
Language:English
Subjects:
Aquaculture
Aquatic mammals
Behavior
Biology
Biomedical and Life Sciences
Commercial fishing
Coryphaena hippurus
Ecological distribution
Environmental science
Farms
Fish
Fish & Wildlife Biology & Management
Fish farms
Fisheries
Fishing
Food Science
Freshwater & Marine Ecology
Habitat preferences
Habitat selection
Habitats
Life Sciences
Mixed layer
Niches
Original Article
Satellite tracking
Satellites
Sea surface
Sea surface temperature
Tags
Tropical climate
Vertical motion
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Summary:To gauge the effectiveness of supplementing native populations of dolphinfish Coryphaena hippurus , we compared farm-raised and wild fish in terms of their horizontal and vertical movement patterns, habitat preferences and thermal niche using pop-up satellite archival tags (PSATs) deployed in two disparate locations: the sub-tropical southeastern coast of Taiwan (wild, n  = 4), and temperate Kagoshima Bay, Japan (farm-raised, n  = 3). Tagged fish were tracked for periods of 7–40 days, reached depths > 100 m, and experienced temperatures of 15–30 °C in Taiwan, and 20–23 °C in Kagoshima Bay. Fish tagged in Taiwan made primarily northward movements during early summer but changed to a southward course in early winter. In Kagoshima Bay, tagged fish undertook southward excursions along the coast and movements were confined to the bay. Dolphinfish spent > 50% of their time near the surface and made more extensive vertical movements during the night than during the day; vertical movements were largely confined to the mixed layer. Depth distributions appeared to be limited by a Δ6 °C change in temperature relative to sea surface temperature (i.e., > 90% of movements were within 6 °C of the warmest water available).
ISSN:0919-9268
1444-2906
DOI:10.1007/s12562-019-01334-y