Hudson River Fishes and their Environment

Dispersal of Age-2+ Striped Bass Out of the Hudson River

Dennis J. Dunning, John R. Waldman, Quentin E. Ross, and Mark T. Mattson

doi: https://doi.org/10.47886/9781888569827.ch16

Abstract.—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 (r = 0.978, P < 0.001), but not with stock size (r = 0.739, P = 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 (r = 0.869, P < 0.025). Therefore, it appears that dispersal of age-2+ striped bass out of the Hudson River was densitydependent and due to cohort abundance.