Abstract
The capacity for enforced activity in response to electrical stimulus and circadian locomotor activity were recorded for adult male Blaberus discoidalis after long-term cardiacectomy-allatectomy (CC −+CA −). CC −+CA − cockroaches showed longer periods of exhaustion during shock stimulated activity than either normal or CA − animals. However, actograph studies revealed no differences between normal and CC −+CA − cockroaches in either circadian rhythmicity or the intensity of activities. These results suggest the cockroach corpora cardiaca do not influence normal activity patterns but maintain metabolic processes at levels sufficient to meet emergency demands.
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