Abstract
Estimates of daily fecundity, hatching success and fecal pellet production are reported for Acartia clausi females exposed for 10 d to low levels of phenol and ammonia. Copepods were collected in 1991 and 1992 from a southern coastal area of the Mar Grande of Taranto (southern Italy). A reduction in egg numbers and fecal pellet production was observed for females after 8 d of exposure to 500 μg l-1 phenol concentration. Ammonia (120 μg l-1) produced a significant increment in egg production, but hatching success was reduced by about 50% after nine exposure days. A. clausi was more sensitive to ammonia than phenol at high concentrations (24-h LC50 phenol-32.26 mg l-1; 24-h LC50 ammonia=0.91 mg l-1). At low concentrations, only long-term exposure to phenol determined a reduction in fecundity.
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Communicated by M. Sarà, Genova
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Buttino, I. The effect of low concentrations of phenol and ammonia on egg production rates, fecal pellet production and egg viability of the calanoid copepod Acartia clausi . Marine Biology 119, 629–634 (1994). https://doi.org/10.1007/BF00354327
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DOI: https://doi.org/10.1007/BF00354327