caa a22 4500 469106379 CHVBK 20180323133057.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF00044169 doi (NATIONALLICENCE)springer-10.1007/BF00044169 McNaught Donald Dept. of Ecology, Evolution and Behavior, University of Minnesota, 55455, Minneapolis, MN, USA aut Zooplankters as indicators of ecosystem health: past findings and future directions [Elektronische Daten] [Donald McNaught] Both acute (ingestion, respiration) and chronic bioassays (reproduction, survival) have been used to identify sources of pollutants. A mass-balance analysis suggests that acute tests be paired, using important indicator species asDaphnia, Ceriodaphnia and potentially others, to estimate the impact of contaminants upon the zooplankton community. Eventually groups of community bioassays may be combined to approximate an ecosystem bioassay. Hormesis or the stimulation of a physiological process by a compound which is toxic at high concentrations is characteristic of several bioassays; in this paper the ecotoxicology community is challenged to keep detailed records of the species, toxic compound, and physiological response involving hormesis in order to understand it; and ultimately to use it to simplify interpretation of bioassays. Life history characteristics of the cladoceran zooplankton, including early reproduction, high net reproductive rates, and the potential for many parthenogenetic generations with constant genotypes and low mutation rates make good choices for environmental bioassays. In contrast, high mutation rates of rotifers make them questionable choices. Five innovations, one or more of which may improve our ability to detect and identify pollutants, are suggested for ecotoxicologists using zooplankton. These include (a) the use of strains of known genotype; (b) determination of the genetic adaptation of clones to common toxins; (c) the use of common behaviors, including responses to light in detection of non-lethal chemicals at ambient levels; (d) record keeping on occurrence of cladoceran tumors; and (e) the determination of precise toxins responsible for the inhibition of zooplankton function and behavior. Kluwer Academic Publishers, 1992 zooplankton nationallicence cladoceran life-histories nationallicence bioassays nationallicence genotypes nationallicence mutations nationallicence behaviors nationallicence TIEs nationallicence hormesis nationallicence Journal of Aquatic Ecosystem Health Kluwer Academic Publishers 1/4(1992-12-01), 271-281 0925-1014 1:4<271 1992 1 10813 https://doi.org/10.1007/BF00044169 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00044169 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- McNaught Donald Dept. of Ecology, Evolution and Behavior, University of Minnesota, 55455, Minneapolis, MN, USA aut NATIONALLICENCE 773 0- Journal of Aquatic Ecosystem Health Kluwer Academic Publishers 1/4(1992-12-01), 271-281 0925-1014 1:4<271 1992 1 10813 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer