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The James River Public Seed Oyster Area In Virginia (A Review Of 22 Years Of Setting And Population Studies, 1946 To 1967 And Changes Caused By Minchinia Nelsoni (Msx) After 1960), Jay D. Andrews
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The seed-oyster area is located in a low-salinity sector of the James River where seasonal riverflows and resulting salinities vary widely. Low spring salinities, usually below 10 °/oo in April or May, eliminate most predators and diseases. Prior to 1960, spatfalls were regular and moderate in intensity each year. High quality seed oysters 2 to 3 inches in size were produced with 1000 to 2000 thick-shelled oysters per bushel for use by private-ground planterH. Following the advent of M. nelsoni (MSX) in Chesapeake Bay in 1959:, setting declined to about one-tenth previous levels and there were spatfall failures in many …