Juvenile and Adult Striped Bass Mortality and Distribution in an Unrecovered Coastal Population

Exploring Causal Factors of Spawning Stock Mortality in a Riverine Striped Bass Population

“…Similarly, Allen (1997) found that catch curves were useful for estimating mortality in populations that exhibited higher recruitment variation (55-84%) than the stocking variability observed in our study. Finally, although it does not yield insight into much of the entire time series of our data, our mortality estimates were very 432 similar to those reported by Bradley et al (2018) for 2014-2015. The methodologies used in these studies (telemetry versus age structure) have different underlying assumptions, increasing confidence that mortality during the overlapping time periods was considerable.…”

“…Current high exploitation rates combined with low stock abundance and a high contribution of hatchery fish to the spawning stock (Rachels and Ricks 2015;Bradley et al 2018) suggest that the expected recovery time of Neuse River Striped Bass continues to be "both uncertain and long" (Hilborn et al 2014). Our research indicates that fisheries managers should reduce exploitation by focusing on reductions in gill-net effort in areas of the Neuse River that are utilized by Striped Bass.…”

“…Bradley et al (2018) also failed to detect a relationship between dissolved oxygen, water temperature, and Striped Bass mortality between summer 2014 and summer 2015. Although numerous Atlantic Menhaden fish kills have occurred due to hypoxic conditions throughout the time period encompassing our research, it appears that these events have relatively little impact on Striped Bass spawning stock mortality.…”

“…The summer (June-August) mean surface dissolved oxygen (mg/L) and summer mean surface water temperature (°C) at ModMon station 30 (RKM 57; Figure 1) were used as environmental factors. Results of an acoustic telemetry study (Bradley et al 2018) determined that the highest densities of adult and juvenile Striped Bass occur in the vicinity of the selected ModMon station.…”

Modeling the Effects of Vital Rate Manipulation and Management Scenarios to Predict the Population Impact of Restoration Programs on an Unrecovered Coastal Population of Striped Bass

“…For example, Bradley et al. () acoustically tracked 100 hatchery‐reared phase II juvenile Striped Bass and 111 resident adults in the Neuse River. They concluded that 66% (95% credible interval [CI] = 47–82%) of juveniles died within the first year after stocking and that adult mortality was lower (annual discrete total mortality = 0.54, 95% CI = 0.43–0.66; annual discrete natural mortality = 0.20, 95% CI = 0.09–0.39).…”