IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Some practical considerations in the measurement of pollution effects on bivalve molluscs, and some possible ecological consequences
Bayne, B.L.; Clarke, K.R.; Moore, M.N. (1981). Some practical considerations in the measurement of pollution effects on bivalve molluscs, and some possible ecological consequences. Aquat. Toxicol. 1(3-4): 159-174
In: Aquatic Toxicology. Elsevier Science: Tokyo; New York; London; Amsterdam. ISSN 0166-445X, more
Peer reviewed article  

Available in Authors 

Keywords
    Ecological effects; Hydrocarbons; Bivalvia [WoRMS]; Mollusca [WoRMS]; Marine
Author keywords
    Sampling strategies; Stress Responses; Natural variability

Authors  Top 
  • Bayne, B.L.
  • Clarke, K.R.
  • Moore, M.N.

Abstract
    A consideration of some physiological (rates of oxygen consumption, the scope for growth) and cellular (the cytochemical latency of a lysosomal enzyme) processes in bivalve molluscs suggests that animal size and seasonal changes related to the gametogenic cycle are important sources of natural variability. Correcting for size using regression techniques, and limiting measurements to one part of the gametogenic cycle, reduces observed natural variability considerably. Differences between populations are then still apparent, but the results of laboratory experiments with hydrocarbons from crude oil suggest that it should be possible to detect sub-lethal effects due to pollution (the ‘signal’) in the presence of the remaining natural variability (the ‘noise’). Statistical considerations, taken together with results from current studies on Mytilus edulis and Scobicularia plana, indicate that sample sizes of 10-15 individuals should suffice for the detection of possible pollution effects. The physiological effects to be expected in the presence of sub-lethal levels of polluting hydrocarbons are on a scaie that can cause significant ecological damage to a population through a reduction in fecundity and the residual reproductive value of the individuals.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors