Abstract
Newly-hatched larvae of the striped blenny (Chasmodes bosquianus), the naked goby (Gobiosoma bosci), and the skilletfish (Gobiesox strumosus) were exposed for 24 hours to varying concentrations of dissolved oxygen obtained by purging York River water with pre-purified grade nitrogen. The experimental apparatus is described. The striped blennies and the naked gobies had median tolerance limits (TL5 0), the oxygen concentrations at which 50% of the larvae would be expected to die atter 24 hours, of 2.50 mg/l (0.95 C.L.: 2.05≤TL5 0≤3.05) and 1.30 mg/l (0.95 C.L.: 1.09 ≤TL5 0≤1.54) respectively. The TL50 was not calculated for the skilletfish but apparently lies between 0.72 mg/l and 1.23 mg/l.
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