He wanted to study this problem by comparing the brains of hibernating animals, during sleep and awake periods.
In winter the metabolic rate is depressed and the fish hibernate just above freezing level.
Transmission to definitive hosts only occurs at times when the ants are not hibernating.
In hibernating animals, for instance, metabolism is kept to a minimum : respiration and excretion occur at a very low rate.
From 8 broods started with single females, 5 developed normally and gave 71 sandflies and 36 larvae hibernated.
These pre-reproductive weevils feed for a period before hibernating in the ground.
During such dust storms, the rover is expected to hibernate to conserve energy.
Such changes play a part in the survival of plants and hibernating animals and bacteria during the winter.