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Effects of Silver on Eggs and Larvae of the Winter Flounder
Author(s) -
KleinMacphee Grace,
Cardin John A.,
Berry Walter J.
Publication year - 1984
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1984)113<247:eosoea>2.0.co;2
Subject(s) - liter , winter flounder , zoology , biology , yolk sac , larva , bioassay , flounder , yolk , embryo , fishery , botany , ecology , fish <actinopterygii> , endocrinology
Embryos and yolk‐sac larvae of the winter flounder Pseudopleuronectes americanus were exposed to 0 (control), 54, 92, 180, and 386 μg/liter silver (Ag +) during an 18‐day flow‐through bioassay. Percent hatch was significantly reduced only at the 386‐μg/liter exposure level (24%). Embryos exposed to 180 and 386 μg/liter hatched earlier than those exposed to lower concentrations, and many exhibited physical abnormalities. Larva mortality was significantly higher at 386, 180, and 92 μg/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 μg/liter (1.98 mm) and 180 μg/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 μg/liter (4.15 mm). The highest concentration of silver not significantly reducing either survival or growth was 54 μg/liter.