The Seasonality of Availability and Movements of Fishes in the Channel of the York River, Virginia

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Abstract
Monthly trawl collections from a 5-year period (1967–1971) were analyzed to determine the distribution of fishes in the channel of the Chesapeake-York-Pamunkey estuary. The relative availability of twelve major species showed spatial and temporal interspecific differences. In winter four resident species,M. saxatilis, M. americana, I. catus andI. punctatus were most abundant. In the spring and fall several resident and nonresident species were abundant, while in summer only two nonresident species,C. regalis andL. xanthurus, and one resident species,O. tau, were abundant in the channel. The combined effect of different distribution patterns was that total numbers of individuals and species increased in spring, declined in summer, and reached their greatest magnitude in fall.

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