Esterase isozymes in a solitary bee, Megachile rotundata (Fab.): characterization, developmental multiplicity, and adult variability.

This study describes the biochemical characterization and genetic variation of cytosolic esterases in the alfalfa leafcutting bee, Megachile rotundata (Fab.). Esterase isozymes were separated by nondenaturing polyacrylamide gel electrophoresis and isoelectric focusing and characterized by inhibition with eserine sulfate, EDTA, paraoxon, and p-hydroxymercuribenzoate.

The kinetics and inhibition of p-nitrophenylacetate-hydrolysing esterases in a solitary bee, Megachile rotundata (Fab.).

1. The kinetics and inhibition of p-nitrophenylacetate hydrolysis by cytosolic esterases of female alfalfa leafcutting bees, Megachile rotundata (Fab.) was examined.

Effects of inducer pretreatment on liver function and morphology in the mountain vole Microtus montanus.

Liver function and morphology of the mountain vole, Microtus montanus, were examined after i.p. injections of phenobarbital, beta-naphthoflavone, or Aroclor 1254 at three dose levels.

Effects of varying inducer type and dose on hepatic monooxygenase activities in the mountain vole Microtus montanus.

Hepatic monooxygenase activities of the mountain vole, Microtus montanus, were measured after i.p. injections of phenobarbital, B-naphthoflavone and Aroclor 1254 at doses ranging from 5 to 80 mg/kg.