The effects of low metal levels on a clonal hydroid
Stebbing, A.R.D. (1976). The effects of low metal levels on a clonal hydroid. J. Mar. Biol. Ass. U.K. 56(4): 977-994
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, more
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| Keywords |
Chemical elements > Metals > Heavy metals
Chemical elements > Metals > Heavy metals > Cadmium
Chemical elements > Metals > Heavy metals > Mercury
Chemical elements > Metals > Transition elements > Heavy metals > Copper
Population functions > Growth
Properties > Biological properties > Toxicity
Tests > Bioassays
Campanularia flexuosa (Alder, 1857) [WoRMS]
Marine/Coastal |
| Abstract |
A sensitive and precise bioassay has been developed, using the colonial hydroid Campanularia flexuosa, for measuring the sublethal effects of marine contaminants in terms of the inhibition of colonial growth rate. A single clone can be cultured simply in the lab for indefinite periods. Thresholds of sensitivity to 3 metals in 11-day experiments were Hg2+ 1.6-1.7 {mu}/l, Cu2+ 10-13 {mu}g/l, Cd2+ 110-280 {mu}g/l. Observations on the development of the hydroid's response with time shows that sensitivity increases linearly at first, but during the 2nd week the metals have a transitory stimulatory effect on colonial growth rate which is known as the Arndt-Schulz Effect. |
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