Abstract
Fourteen esterase isozymes were detected by polyacrylamide gel electrophoresis in homogenates of eggs of the field cricket Teleogryllus commodus, at various stages of development. One esterase isozyme appeared during embryonic diapause termination effected by prolonged chilling of the eggs. Esterase activity towards methyl butyrate in T. commodus egg homogenates increased with time. Sonication generated the maximum levels of esterase activity observed. Methyl butyrate esterase activity in T. commodus eggs was high during the first few days of embryogenesis; fell markedly during the period of rapid water uptake, and then remained fairly constant during diapause, diapause development, and during resumed embryogenesis.
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