Linking Habitat Use of Hudson River Striped Bass to Accumulation of Polychlorinated Biphenyl Congeners

2000 ◽  
Vol 34 (6) ◽  
pp. 1023-1029 ◽  
Author(s):  
Jeffrey T. F. Ashley ◽  
David H. Secor ◽  
Erik Zlokovitz ◽  
Samantha Q. Wales ◽  
Joel E. Baker
Keyword(s):  
Habitat Use ◽  
Striped Bass ◽  
Polychlorinated Biphenyl ◽  
Hudson River

Effect of habitat use on PCB body burden in Hudson River striped bass (Morone saxatilis)

1999 ◽  
Vol 56 (S1) ◽  
pp. 86-93 ◽  
Author(s):  
Erik R Zlokovitz ◽  
David H Secor
Keyword(s):  
New York ◽  
Habitat Use ◽  
Striped Bass ◽  
Polychlorinated Biphenyl ◽  
Body Burden ◽  
Morone Saxatilis ◽  
Hudson River ◽  
Local Source ◽  
Marine Habitats ◽  
Electron Microanalysis

The Hudson River commercial striped bass (Morone saxatilis) fishery has been closed since 1976 due to high polychlorinated biphenyl (PCB) contamination. Accurate forecasting of PCB levels in striped bass has been confounded by high variance in contamination among individuals. We investigated the relationship between habitat use and PCB contamination in Hudson River and Long Island Sound striped bass using electron microanalysis of otolith strontium to generate time series of individual salinity habitation. Males with highly contaminated levels (mean PCB = 8.3 ppm) showed freshwater resident behavior, rarely experiencing salinities >5 ppt. Several individuals showed large habitat shifts. Shifts from brackish or marine habitats to freshwater habitats were often associated with high PCB levels. A third pattern was apparent in large females, where polyhaline/euhaline salinity habitation was associated with lower PCB levels. Total PCB body burden was inversely correlated with mean salinity encountered during the most recent growth season prior to capture. Fish with recent exposure to polyhaline salinities showed high variability in PCB body burdens (0.4-9.0 ppm), suggesting a local source of PCB contamination in the New York Harbor region.

Dispersal of Young-of-the-Year Hatchery Striped Bass in the Hudson River

1991 ◽  
Vol 11 (3) ◽  
pp. 381-392 ◽  
Author(s):  
Alan W. Wells ◽  
Donna M. Randall ◽  
Dennis J. Dunning ◽  
John R. Young
Keyword(s):  
Striped Bass ◽  
Hudson River ◽  
Young Of The Year

scholarly journals Polychlorinated Biphenyl Exposure and Neuropsychological Status among Older Residents of Upper Hudson River Communities

2008 ◽  
Vol 116 (2) ◽  
pp. 209-215 ◽  
Author(s):  
Edward F. Fitzgerald ◽  
Erin E. Belanger ◽  
Marta I. Gomez ◽  
Michael Cayo ◽  
Robert J. McCaffrey ◽  
...  
Keyword(s):  
Polychlorinated Biphenyl ◽  
Hudson River ◽  
Neuropsychological Status ◽  
River Communities

Tag Retention by, and Tagging Mortality of, Hudson River Striped Bass

1987 ◽  
Vol 7 (4) ◽  
pp. 535-538 ◽  
Author(s):  
Dennis J. Dunning ◽  
Quentin E. Ross ◽  
John R. Waldman ◽  
Mark T. Mattson
Keyword(s):  
Striped Bass ◽  
Hudson River ◽  
Tag Retention

Hudson River Fishes and their Environment

2006 ◽  
Keyword(s):  
Striped Bass ◽  
Hudson River ◽  
Maximum Distance ◽  
Stock Size

<em>Abstract.</em>—Our objective was to determine if dispersal of age-2+ striped bass out of the Hudson River was affected by cohort abundance or stock size. We evaluated dispersal using the location of tagged age-2+ striped bass (in or outside of the Hudson River) and distance from the mouth of the Hudson River when they were recaptured by anglers. The proportion of age-2+ striped bass recaptured outside the Hudson River annually during May was significantly and positively correlated with cohort abundance (<em>r </em>= 0.978, <EM>P </EM>< 0.001), but not with stock size <em>(r </em>= 0.739, <EM>P </EM>= 0.094). The maximum distance at which an age-2+ striped bass was recaptured outside the Hudson River annually was also significantly and positively correlated with cohort abundance (<em>r </em>= 0.869, <EM>P </EM>< 0.025). Therefore, it appears that dispersal of age-2+ striped bass out of the Hudson River was densitydependent and due to cohort abundance.

Hudson River Fishes and their Environment

2006 ◽  
Keyword(s):  
Striped Bass ◽  
River Estuary ◽  
Circulation Model ◽  
Hudson River ◽  
Hudson River Estuary ◽  
Freshwater Flow ◽  
East River ◽  
Particle Tracking Model ◽  
Tracking Model ◽  
Neutrally Buoyant

<em>Abstract.</em>—Our objectives were to determine if striped bass <em>Morone saxatilis </em>larvae were present in the East River and if so, could they have come from the Hudson River. To meet the first objective, we examined entrainment data collected at the Charles Poletti Power Plant (Poletti) during the years 1999 through 2002. To meet the second objective, we examined the simulated release of 168,000 neutrally buoyant, passive particles in the lower Hudson River Estuary, using a particle-tracking model that was linked to an estuarine circulation model. We also compared the abundance of striped bass post-yolk-sac larvae (PYSL) collected in the East River at Poletti with the abundance of striped bass PYSL collected in the Battery region of the lower Hudson River Estuary and the abundance of striped bass PYSL in the Battery region with freshwater flow in the estuary. Striped bass PYSL were collected by entrainment sampling in the East River at Poletti every year from 1999 through 2002. The striped bass PYSL in the East River probably came from the Hudson River Estuary because the median probability that neutrally buoyant, passive particles would be transported from the lower Hudson River Estuary to the upper East River and western Long Island Sound was 0.12, with a median transport time of 2 d, and because the mean density of striped bass PYSL was highest at Poletti and in the Battery region during the same year. The abundance of striped bass PYSL in the Battery region was higher when freshwater flow during May and early June was higher.

Catch and Release in Marine Recreational Fisheries

2002 ◽  
Keyword(s):  
Striped Bass ◽  
Growth Parameters ◽  
Size Composition ◽  
Hudson River ◽  
Sensitivity Analyses ◽  
Selective Mortality ◽  
River Population ◽  
Spawning Stock ◽  
The Mean ◽  
Size Limits

<em> Abstract.</em>—One component of the management regimen employed to rebuild the Atlantic coastal migratory stock of striped bass <em> Morone saxatilis </em>was the imposition of large size limits to reduce fishing mortality to zero, on the 1982 and subsequent year-classes, until 95% of the females had an opportunity to reproduce at least once. Such size limits introduce size-selective mortality that favors the survival of slower-growing members of the population and may select for slower growth in succeeding generations. Size-at-age data from the Hudson River population were used to examine the effect of alternative size limits on the length distributions of survivors by age using simulation. The results indicate that minimum sizes currently in use can cause profound changes in the size composition of the spawning stock. The mean asymptotic length of unfertilized eggs under equilibrium conditions was estimated as an index of the extent to which these changes may influence future growth. With the current best estimates of growth parameters and fecundity at size, this index was reduced by only about 3%. However, because of the size-selective mortality in the existing fishery and uncertainty arising from sampling difficulties, growth is probably poorly characterized by the existing data. Sensitivity analyses revealed that some reasonable combinations of growth and minimum sizes can induce changes in the mean asymptotic length of unfertilized eggs by more than 10%, which would be about 30% in terms of asymptotic mean weight. The extent to which this selective force might be expressed in succeeding generations is uncertain. However, reliance on minimum sizes to constrain catch has the potential to cause profound changes in growth and probably should not be adopted for long-term management of striped bass until this problem is better understood.

Activity-related constraints on overwintering young-of-the-year striped bass (Morone saxatilis)

2001 ◽  
Vol 79 (1) ◽  
pp. 129-136 ◽  
Author(s):  
Thomas P Hurst ◽  
David O Conover
Keyword(s):  
Food Consumption ◽  
Striped Bass ◽  
Morone Saxatilis ◽  
Metabolic Cost ◽  
Hudson River ◽  
Energetic Cost ◽  
Energy Budgets ◽  
Swimming Velocity ◽  
Thermal Dependence ◽  
Young Of The Year

The importance of activity to overwintering fishes has received little attention. Activity imposes two constraints: maximum swimming speed limits habitats that can be occupied for short periods of time, while the metabolic cost of swimming limits the habitats that are suitable for long-term residence. We measured the energetic consequences of activity and maximum swimming speeds of young-of-the-year striped bass (Morone saxatilis), a species that overwinters in tidal estuaries. The energetic cost of swimming was determined from energy changes in unfed fish forced to swim at various speeds, while energy changes in fed fish provided a measure of their ability to offset swimming costs through feeding. In high-velocity treatments, mortality was size-dependent and appeared to be related to fatigue rather than to depletion of energy reserves. The energetic cost of swimming increased with swimming velocity, but fish increased food consumption and thereby met their metabolic needs. In a second experiment the thermal dependence of swimming capacity in winter-acclimated striped bass was measured. Swimming speeds increased with temperature, from 2.7 body lengths (BL)/s at 2°C to 4.8 BL/s at 8 and 11°C, but were considerably below observed flow velocities in the Hudson River, suggesting a need for behavioral or physical refuge from tidal currents. These results indicate the flexibility of energy budgets of overwintering fishes, allowing energetic stress to be minimized by reducing activity or elevating food-consumption rates when sufficient prey are available.

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