Fecundity of Atlantic sturgeon ( Acipenser oxyrinchus Mitchill, 1815) captured by the commercial fishery in the Saint John River, New Brunswick, Canada

2020 ◽  
Vol 36 (2) ◽  
pp. 142-150
Author(s):  
Sarah M. J. Mitchell ◽  
Michael J. Dadswell ◽  
Cornel Ceapa ◽  
Michael J. W. Stokesbury
Keyword(s):  
New Brunswick ◽  
Atlantic Sturgeon ◽  
Commercial Fishery ◽  
Saint John ◽  
Acipenser Oxyrinchus

Population Characteristics of Adult Atlantic Sturgeon Captured by the Commercial Fishery in the Saint John River Estuary, New Brunswick

2017 ◽  
Vol 146 (2) ◽  
pp. 318-330 ◽  
Author(s):  
Michael J. Dadswell ◽  
Cornel Ceapa ◽  
Aaron D. Spares ◽  
Nathan D. Stewart ◽  
R. Allen Curry ◽  
...  
Keyword(s):  
New Brunswick ◽  
River Estuary ◽  
Population Characteristics ◽  
Atlantic Sturgeon ◽  
Commercial Fishery ◽  
Saint John

Seasonal distribution and movement of juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) in the lower Saint John River Basin, New Brunswick, Canada

2018 ◽  
Vol 75 (12) ◽  
pp. 2354-2363 ◽  
Author(s):  
Margaret M. Whitmore ◽  
Matthew K. Litvak
Keyword(s):  
River Basin ◽  
Movement Patterns ◽  
Principal Component ◽  
Wide Distribution ◽  
Atlantic Sturgeon ◽  
Coarse Scale ◽  
Brackish Waters ◽  
Single Location ◽  
Saint John ◽  
Acipenser Oxyrinchus

Juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) movement and distribution varies seasonally within the lower Saint John River Basin. We use acoustic telemetry to track coarse-scale movement and a network-based approach to develop metrics describing distribution and movement patterns of juvenile Atlantic sturgeon tagged in two rivers, the Saint John and Kennebecasis rivers. We use principal component analysis to develop indices of movement and residency and test for differences among seasons and between fish from each river. Juvenile Atlantic sturgeon exhibit higher residency during summer months compared with winter and spring. Juveniles are primarily concentrated in the brackish waters of the lower river reaches but make movements as far upriver as rkm 88. There was high variation in distribution and movement patterns exhibited by fish tagged in the Kennebecasis River, ranging from single-location occupancy to wide distribution. Three fish left the system during the study, indicating juveniles embark on brief marine excursions. Identifying spatiotemporal distributions of juvenile Atlantic sturgeon in their natal river systems is a crucial step towards identifying critical habitat and informing management decisions for this species.

Age and Growth of Atlantic Sturgeon from the Saint John River, New Brunswick, Canada

2015 ◽  
Vol 35 (2) ◽  
pp. 364-371 ◽  
Author(s):  
Nathan D. Stewart ◽  
Michael J. Dadswell ◽  
Paul Leblanc ◽  
Rod G. Bradford ◽  
Cornel Ceapa ◽  
...  
Keyword(s):  
New Brunswick ◽  
Age And Growth ◽  
Atlantic Sturgeon ◽  
Saint John

scholarly journals Fine-scale movement of juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) during aggregations in the lower Saint John River Basin, New Brunswick, Canada

2018 ◽  
Vol 75 (12) ◽  
pp. 2332-2342 ◽  
Author(s):  
Margaret M. Whitmore ◽  
Matthew K. Litvak
Keyword(s):  
River Basin ◽  
Space Use ◽  
Scale Space ◽  
Low Flow ◽  
Atlantic Sturgeon ◽  
Fine Scale ◽  
Vemco Positioning System ◽  
Directional Movement ◽  
Saint John ◽  
Acipenser Oxyrinchus

Juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) form seasonal aggregations near the salt wedge in their natal river systems. We used an array of Vemco positioning system acoustic receivers to track fine-scale movement within aggregation sites in two rivers in the Saint John River Basin. We used the t-LoCoH convex hull construction algorithm to map space use and aggregation behavior and nonmetric multidimensional scaling to test for differences among rivers, seasons, and photoperiods. Aggregation sites consisted of small core areas, where juvenile Atlantic sturgeon remained for long periods, that are adjacent to foraging grounds. This structure was largely consistent between rivers and seasons. Directional movement within aggregation sites differed between rivers. In areas of high flow velocity, directional movement was parallel to flow and largely restricted to littoral areas, whereas areas of low flow exhibited no distinct patterns in directional movement. This indicates flow may be an important driver of fine-scale distribution within aggregation sites. Studies of fine-scale space use can inform future investigations of rearing capacity, aid in the identification of critical habitat, and inform management decisions.

Methylmercury in tissues of Atlantic sturgeon (Acipenser oxyrhynchus) from the Saint John River, New Brunswick, Canada

2018 ◽  
Vol 126 ◽  
pp. 250-254 ◽  
Author(s):  
Mark L. Mallory ◽  
Nelson J. O'Driscoll ◽  
Sara Klapstein ◽  
Jose Luis Varela ◽  
Cornell Ceapa ◽  
...  
Keyword(s):  
New Brunswick ◽  
Atlantic Sturgeon ◽  
Saint John

Timing and Extent of Drift of Shortnose Sturgeon Larvae in the Saint John River, New Brunswick, Canada

2013 ◽  
Vol 142 (3) ◽  
pp. 717-730 ◽  
Author(s):  
Sima Usvyatsov ◽  
Jeffrey Picka ◽  
Andrew Taylor ◽  
James Watmough ◽  
Matthew Kenneth Litvak
Keyword(s):  
New Brunswick ◽  
Shortnose Sturgeon ◽  
Saint John

Contemporary and historical effective population sizes of Atlantic sturgeon Acipenser oxyrinchus oxyrinchus

2018 ◽  
Vol 20 (2) ◽  
pp. 167-184 ◽  
Author(s):  
John Waldman ◽  
S. Elizabeth Alter ◽  
Douglas Peterson ◽  
Lorraine Maceda ◽  
Nirmal Roy ◽  
...  
Keyword(s):  
Atlantic Sturgeon ◽  
Effective Population ◽  
Population Sizes ◽  
Acipenser Oxyrinchus
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