Sampling design optimization for EROD measurements in fish

Abstract

ABSTRACT. Aclvlty of 7-ethoxyresorufin-0-deethylase (EROD) In fish is certainly the best-studied b~omarker of exposure applied In the field to evaluate biological effects of contamination in the manne environment Since 1991, a feasibility study for a monitonng network using this biornarker of exposure has been conducted along French coasts Uslng data obtalned dunng several cruises, thls study aims to determine the number of flsh requ~red to detect a glven difference between 2 mean EROD activities, I e to achieve an a prlon fixed statistical power (l-P) glven s~g n~f~c a n c e level (a),

Liver ethoxyresorufin-O-deethylase and brain acetylcholinesterase in two freshwater fish species of South America; the effects of seasonal variability on study design for biomonitoring

“…same species, sex, reproductive status). Using this information we can properly design a sampling program, maximizing statistical power using an adequate sample number (Beliaff and Burgeot, 1997, Payne et al, 1996, Munkittrick et al 2009.…”

Sources of measurement error in assays of EROD activity of fish for biological effects monitoring

“…Therefore a direct comparison of absolute EROD activity in different species is not always meaningful, although general patterns should be the same, as evident from the seasonal expression of EROD activity in both species (Westernhagen et al this Vol.). In some species (mullet, dab) though, ranges may be very similar (Beliaeff and Burgeot 1997).…”