Table 26. Toxicity of mercurychloride: the mercury concentrations at which 50% of the organisms die off (LCso ) in experiments of different duration, or other effects occur. (From different
authors quoted by Stebbing 1976)
LCso
Experiment, duration
Organism
Reference
(JJ.g/l)
0.5
Growth rate:
Campanularia (hydroid polyp) Stebbing (1976)
ll-dayexperiment
1.6
Same experiment, 6 days
Campanularia
Stebbing (1976)
1.3
Morphological changes
Eirene (hydroid polyp)
Karbe (1972)
1-3 48 h LCso of larvae
Ostrea (oyster)
Connor (1972)
1.6
Cell size, inhibition of
Isochrysis (plankton algae)
Davies (1974)
reproduction rate
1.8
Metabolism and mortality Uca (fiddler crab)
De Coursey and Vernberg
of larvae
(1972)
2.5
Inhibition of reproduction Cristigera (cilicate)
Gray and Ventilla (1973)
rate
3
Inhibition of reproduction Chlamydomonas (plankton
Nuzzi (1972)
rate
algae)
3
Inhibition of reproduction Chlorella (plankton algae)
Kamp-Nielsen (1971)
rate
4.8
48 h LCso of larvae
Mercenaria (clam)
Calabrese and Nelson
(1974)
5.6
48 h LCso of larvae
Crassostrea (oyster)
Calabrese et al. (1973)
10
48 h LCso of larvae
Crangon (shrimp)
Connor (1972)
10
Stimulation of rate of
Congeria (mussel)
Dorn (1974)
respiration
14
48 h LCso of larvae
Carcinus (crab)
Connor (1974)
27
Morphological changes
Crassostrea (oyster)
Woelke (1965)
in larvae
33 -100 48 h LCso of larvae
Homarus (lobster)
Connor (1972)
50
25 h LCso
Acartia (copepod)
Corner and Sparrow
(1956)
50
Inhibition of growth
Scenedesmus (plankton algae) Matida et al. (1971)
50-64 96 h LCso
Petrolisthes (crab)
Roesijadi et al. (1974)
75
48 h LCso
Pandalus (prawn)
Portmann (1968)
100
Inhibition of rate of growth Chaetoceros, Cyclofella,
Hannan and Patoui1let
Phaeodactylum (plankton
(1972)
algae)
170
Inhibition of growth
Chlamydomonas (plankton
Ben-Bassat et al. (1972)
algae)
125