scholarly journals Effect of demography on spatial distribution: movement patterns of the Albemarle Sound–Roanoke River stock of Striped Bass (Morone saxatilis) in relation to their recovery

2014 ◽  
Vol 112 (2-3) ◽  
pp. 131-143 ◽  
Author(s):  
Jody L. Callihan ◽  
Charlton H. Godwin ◽  
Jeffrey A. Buckel
1993 ◽  
Vol 50 (6) ◽  
pp. 1318-1323 ◽  
Author(s):  
Charles C. Coutant ◽  
C. H. Chen

A laser ablation microprobe with mass spectrometry was used to examine the variability of Sr concentration among and within scales of striped bass (Morone saxatilis). These exploratory studies demonstrated that the technique is capable of showing differences that we relate to environmental conditions. There were marked differences in scale Sr concentrations at high spatial resolution between striped bass from freshwater reservoirs in Tennessee (low Sr) and the Roanoke River – Albemarle Sound estuary system in North Carolina (high Sr). A peak in Sr concentration was found near the scale focus of striped bass collected in the freshwater Roanoke River (but not in scales from reservoir fish) that may identify saltwater parentage or estuarine rearing. In fish from the Roanoke River and Albemarle Sound, we observed spatial variations across annuli that might reflect movements between fresh and saline water. There was a typical Sr profile with depth through the estuarine scales that exhibited a peak of unresolved significance near the inside surface. Laser ablation mass spectrometry of Sr in fish scales appears to be a valuable technique for life history analyses.


2017 ◽  
Vol 74 (7) ◽  
pp. 1061-1076 ◽  
Author(s):  
Julianne E. Harris ◽  
Joseph E. Hightower

We developed an integrated tagging model to estimate mortality rates and run sizes of Albemarle Sound – Roanoke River striped bass (Morone saxatilis), including (i) a multistate component for telemetered fish with a high reward external tag; (ii) tag return components for fish with a low reward external or PIT tag; and (iii) catch-at-age data. Total annual instantaneous mortality was 1.08 for resident (458–899 mm total length, TL) and 0.45 for anadromous (≥900 mm TL) individuals. Annual instantaneous natural mortality was higher for resident (0.70) than for anadromous (0.21) fish due to high summer mortality in Albemarle Sound. Natural mortality for residents was substantially higher than currently assumed for stock assessment. Monthly fishing mortality from multiple sectors (including catch-and-release) corresponded to seasonal periods of legal harvest. Run size estimates were 499 000–715 000. Results and simulation suggest increasing sample size for the multistate component increases accuracy and precision of annual estimates and low reward tags are valuable for estimating monthly fishing mortality rates among sectors. Our results suggest that integrated tagging models can produce seasonal and annual mortality estimates needed for stock assessment and management.


2011 ◽  
Vol 127 (3) ◽  
pp. 216-218
Author(s):  
DANIEL R. MEADS ◽  
MAURICE K. CRAWFORD ◽  
KEVIN J. DOCKENDORF

Abstract Total length and weight data of striped bass were sampled by boat electrofishing during the months of April and May (2007–2009) in the Roanoke River near Weldon, NC. Qualitative and quantitative measures were used to exclude errors and outliers from the data set; data were then log10 transformed to calculate length-weight regressions for each sex. These regressions predicted the weights of male and female striped bass. Our results were compared to striped bass collected from the B. Everett Jordan Reservoir in 2008 and found significant differences between slopes indicating that applying length-weight equations derived from striped bass collected in reservoirs to estuarine striped bass is inappropriate. The equations developed can be used in an online calculator that would allow anglers to estimate the weight of striped bass caught in the Roanoke River during the spring based on the length of the fish caught.


Estuaries ◽  
1998 ◽  
Vol 21 (2) ◽  
pp. 307 ◽  
Author(s):  
John E. Cooper ◽  
Roger A. Rulifson ◽  
J. Jeffrey Isely ◽  
Sara E. Winslow

2017 ◽  
Vol 187 ◽  
pp. 168-177 ◽  
Author(s):  
Heather M. Hollema ◽  
Jeff Kneebone ◽  
Stephen D. McCormick ◽  
Greg B. Skomal ◽  
Andy J. Danylchuk

2018 ◽  
Vol 42 (2) ◽  
pp. 567-579
Author(s):  
Megan C. Sabal ◽  
Cyril J. Michel ◽  
Joseph M. Smith ◽  
Andrew Hampton ◽  
Sean A. Hayes

Author(s):  
Cynthia M. Le Doux-Bloom ◽  
Rebekah S. Lane ◽  
Grant J. Christian ◽  
Catherine A. Masatani ◽  
Jennifer E. Hemmert ◽  
...  

AbstractPurposely introduced in 1879, Pacific coast Striped Bass Morone saxatilis once supported a commercial fishery and currently supports a recreational fishery in the San Francisco Estuary Watershed, CA, USA; however, the population has been in decline for decades. Since little is known about sub-adult behavior on the Pacific coast, we used acoustic telemetry to investigate seasonal movement patterns and habitat use across three regions (bay, delta, and river) and the effects of temperature and salinity on habitat use over a 2-year period. Sub-adult movement and habitat use differed by year and age. In spring, age-I and age-II sub-adults moved within the delta (60%), river (20%), and bay (20%) regions, and by summer, some individuals moved to the bay (36%), while others remained in the delta (42%) and river (22%). Fall and winter showed equal movement between the bay and delta regions. During year 2, age-II and age-III fish inhabited the bay region across all seasons with the exception of spring when a few individuals migrated up river. Generally, sub-adults did not inhabit the river region in fall or winter. Sub-adults were not detected in water temperatures < 10 °C and occurred most often in 20–25 °C. Younger sub-adults inhabited limnetic habitat where older fish inhabited mesohaline and polyhaline habitats. Our findings suggest that sub-adult seasonal movement patterns and habitat use hotspots have important fishery management implications and can be useful to address concerns over how this non-native fish’s predation impacts native and endangered fishes.


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