Life Sciences Commons^™

Age, Growth, And Mortality Of Atlantic Croaker, Micropogonias-Undulatus, In The Chesapeake Bay-Region, With A Discussion Of Apparent Geographic Changes In Population-Dynamics, Luiz R. Barbieri, Mark E. Chittenden, Cynthia M. Jones

VIMS Articles

Atlantic croaker, Micropogonias undulatus, collected from commercial catches in Chesapeake Bay and in Virginia and North Carolina coastal waters during 1988-1991 (n=1,967) were aged from transverse otolith sections. Ages 1-8 were recorded, but eight-year-old fish were rare. Marginal increment analysis showed that for ages 1-7, annuli are formed once a year during the period April-May. Otolith age readings were precise: >99% agreement within and between readers. Observed lengths-at-age were highly variable and growth rate decreased after the first year. Despite the high variability in sizes-at-age, observed lengths for ages 1-7 fit the von Bertalanffy growth model (r2=0.99; n=753) well. No …

Marine Fishes In Fresh And Brackish Waters Of Virginia Rivers, William H. Massman

VIMS Articles

In the fresh and brackish waters of the James, Chickahominy, Pamunkey, Mattaponi and Rappahannock rivers in Virginia, 18 species of marine fishes ( exclusive of anadromous and catadromus forms) have been collected. Gunter's (1942) exhaustive survey of the occurrence of Atlantic coast marine fishes in fresh water is here amplified for the most important tidal rivers of Virginia.

Since 1949 intensive collecting has been done in brackish and tidal fresh waters of the Pamunkey and Rappahannock rivers, and numerous. collections have been made in the James, Chickahominy, and Mattaponi.