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Effects of silver on eggs and larvae of the winter flounder. [Pseudopleuronectes americanus]

Journal Article · · Trans. Am. Fish. Soc.; (United States)
Embryos and yolk-sac larvae of the winter flounder Pseudopleuronectes americanus were exposed to 0(control), 54, 92, 180, and 386 ..mu..g/liter silver (Ag/sup +/) during an 18-day flow-through bioassay. Percent hatch was signficantly reduced only at the 386-..mu..g/liter exposure level (24%). Embryos exposed to 180 and a 386 ..mu..g/liter hatched earlier than those exposed to lower concentrations, and many exhibited physical abnormalities. Larva mortality was significantly higher at 386, 180, and 92 ..mu..g/liter (100, 97, and 31%, respectively) than in the control (6%). The mean total lengths of larvae at hatch were significantly greater in control (3.56 mm) than in 386 ..mu..g/liter (1.98 mm) and 180 ..mu..g/liter (3.25 mm). At yolk-sac absorption, the mean total length of control larvae (4.27 mm) was significantly greater than that of larvae exposed to 180 ..mu..g/liter (4.15 mm). The highest concentration of silver not significantly reducing either survival or growth was 54 ..mu..g/liter.
Research Organization:
Univ. of Rhode Island, Kingston
OSTI ID:
6798366
Journal Information:
Trans. Am. Fish. Soc.; (United States), Journal Name: Trans. Am. Fish. Soc.; (United States) Vol. 113:2; ISSN TAFSA
Country of Publication:
United States
Language:
English