. Bulletin de l'Académie des Sciences de Californie du Sud. La science ; natural history ; histoire naturelle. Bulletin 56 So. Californie Academy Sciences/ tome 67, n° i, 1968 cas n la gamme de variation d'un élément au sein d'un tissu particulier de la population peut dépasser un ordre de grandeur. Deux échantillons de tissus musculaires provenant de différentes régions du même poisson n'a pas montré de différences significatives, indicatingthatconcentrationsare thesamethrough- out probablement le même tissu de la même personne.. La figure 1. Calico bass avec les organes internes exposés. Le poisson est supérieure à partir de Dana Point et la partie inférieure f

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. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. 56 Bulletin So. Calif. Academy Sciences/ Vol. 67, No. i, 1968 cases did the range of variation for an element within a particular tissue of the population exceed an order of magnitude. Two samples of muscle tissue taken from different regions of the same fish showed no significant differences, indicatingthatconcentrationsare probably thesamethrough- out the same tissue of the same individual.. Figure 1. Calico bass with internal organs exposed. The upper fish is from Dana Point and the lower fish is from the Scattergood steam plant. Note differences in relative size and appearance of livers (indicated by arrows). The upper fish is about forty centimeters long. Since only one population from a normal environment was examined, it cannot be said for certain that differences in trace element concentra- tion between the two populations was a result of the abnormal environ- ment of the Scattergood effluent pipe. However, the fact that livers of fish from the effluent were enlarged and discolored, while livers of fish from a number of different normal environments were not, suggests that this condition at least is a product of the Scattergood environment. Summary 1. Trace element concentrations in tissues of two populations of the calico bass Paralabrax clathratus were examined. One population came from a normal environment near Catalina Island and the other from the effluent pipe of the Scattergood steam generating plant. Livers of fish from this latter population were enlarged and discolored, probably as a result of the abnormal environment.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Southern California Academy of Sciences. Los Angeles, Calif. : The Academy

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