Mortality Estimates of Striped Bass Caught in Albemarle Sound and Roanoke River, North Carolina

1995 ◽  
Vol 15 (2) ◽  
pp. 290-299 ◽  
Author(s):  
Robert M. Dorazio
Keyword(s):  
North Carolina ◽  
Striped Bass ◽  
Albemarle Sound ◽  
Roanoke River ◽  
Mortality Estimates

Strontium Microstructure in Scales of Freshwater and Estuarine Striped Bass (Morone saxatilis) Detected by Laser Ablation Mass Spectrometry

1993 ◽  
Vol 50 (6) ◽  
pp. 1318-1323 ◽  
Author(s):  
Charles C. Coutant ◽  
C. H. Chen
Keyword(s):  
Mass Spectrometry ◽  
North Carolina ◽  
Laser Ablation ◽  
Striped Bass ◽  
High Spatial Resolution ◽  
Saline Water ◽  
Morone Saxatilis ◽  
Albemarle Sound ◽  
Roanoke River ◽  
Surface Laser

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.

scholarly journals An integrated tagging model to estimate mortality rates of Albemarle Sound – Roanoke River striped bass

2017 ◽  
Vol 74 (7) ◽  
pp. 1061-1076 ◽  
Author(s):  
Julianne E. Harris ◽  
Joseph E. Hightower
Keyword(s):  
Striped Bass ◽  
Stock Assessment ◽  
Mortality Rates ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Albemarle Sound ◽  
High Reward ◽  
Accuracy And Precision ◽  
Summer Mortality ◽  
Roanoke River

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.

scholarly journals Predicting Weights of Striped Bass Morone Saxatilis in the Roanoke River, North Carolina

2011 ◽  
Vol 127 (3) ◽  
pp. 216-218
Author(s):  
DANIEL R. MEADS ◽  
MAURICE K. CRAWFORD ◽  
KEVIN J. DOCKENDORF
Keyword(s):  
North Carolina ◽  
Striped Bass ◽  
Morone Saxatilis ◽  
Data Set ◽  
Male And Female ◽  
Qualitative And Quantitative ◽  
Total Length ◽  
Roanoke River ◽  
Online Calculator ◽  
Weight Data

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.

scholarly journals Prey Selectivity and Diet of Striped Bass in Western Albemarle Sound, North Carolina

2005 ◽  
Vol 134 (5) ◽  
pp. 1059-1074 ◽  
Author(s):  
Paul J. Rudershausen ◽  
Jack E. Tuomikoski ◽  
Jeffrey A. Buckel ◽  
Joseph E. Hightower
Keyword(s):  
North Carolina ◽  
Striped Bass ◽  
Prey Selectivity ◽  
Albemarle Sound
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