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- Title
Seasonal movements of striped bass Morone saxatilis in a large tidal and hydropower regulated river.
- Authors
Andrews, S. N.; Wallace, B.; Gautreau, M.; Linnansaari, T.; Curry, R. A.
- Abstract
Following a failed spawning event in 1975 and the suspected absence of recent spawning by Striped Bass Morone saxatilis in the Saint John River, New Brunswick, the native Striped Bass population has been considered extirpated. Non-native migratory Striped Bass, however, still frequent the river, and a remnant, likely native, population may still exist. To characterize the movements and habitat use of adult Striped Bass still arriving to, and possibly residing within the Saint John River, Striped Bass (n = 40, size range, 40.5-90.9 cm FL) were captured throughout 2010-13 in the lower Saint John River, and surgically implanted with multi-year acoustic transmitters. Striped Bass were passively tracked using an array of 5-33 project specific receivers between 2010 and 14 and augmented by detections from the Ocean Tracking Network from 2011 to 13. Most tag detections recorded during the predicted spawning period occurred near locations suspected to have supported Striped Bass spawning historically. Only six tagged fish (15% of total) were detected outside of the river, five of which only left the river briefly during the spawning period and then returned. Tagged Striped Bass used four overwintering sites within the Saint John River to which individuals demonstrated annual fidelity. Our findings suggest the presence of a local, possibly reproducing Striped Bass population that exhibits multi-annual residency within the river; however, successful spawning remains to be confirmed.
- Subjects
STRIPED bass; FISH migration; VERTICAL distribution of fish; SPAWNING; FISH populations
- Publication
Environmental Biology of Fishes, 2018, Vol 101, Issue 10, p1549
- ISSN
0378-1909
- Publication type
Article
- DOI
10.1007/s10641-018-0799-y