Liver Cell Estrogen Receptor Binding in Prespawning Female LargemouthBass, Micropterus salmoides, Environmentally Exposed toPolychlorinated Biphenyls.

Estrogen-receptor-like binding was partiallycharacterized in liver tissue of prespawning female largemouth bass,Micropterus salmoides (LMB). Saturation and Scatchard analysesexhibited estrogen binding activity with high affinity (Kd in the10(-9) M range) and limited capacity (nuclear = 37.4fmol/g tissue; cytosol = 234 fmol/g tissue).

Indirect effects of fish on macrophytes in Bays Mountain Lake: evidence for a littoral trophic cascade.

We began this experiment to test specific hypotheses regarding direct and indirect effects of fish predation on the littoral macroinvertebrate community of Bays Mountain Lake, Tennessee. We used 24 m enclosures in which we manipulated the presence and absence of large redear sunfish (Lepomis microlophus>150 mm SL), and small sunfish (L. macrochirus and L.

Office automation technology and functions: an overview.

Office automation is the progeny of technological imperatives coupled with bureaucratic realities. Advances in computer, photographic, and telecommunication technologies have made it possible to collect, edit, store, distribute, and copy documentary information at ever decreasing cost. The need for training, acceptance, cooperation, and effective use of the technology has filtered out many proposed systems.