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- Title
Movement behaviour of released wild and farm-raised dolphinfish Coryphaena hippurus tracked by pop-up satellite archival tags.
- 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
- Abstract
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).
- Subjects
TAIWAN; OCEAN temperature; ARTIFICIAL satellite tracking; FISH tagging; MIXING height (Atmospheric chemistry); HABITAT selection
- Publication
Fisheries Science, 2019, Vol 85, Issue 5, p779
- ISSN
0919-9268
- Publication type
Article
- DOI
10.1007/s12562-019-01334-y