| During prolonged estivation, African lungfishes may accumulate high concentrations of urea in the body. |
| Calibrachoa can, however, be distinguished from Petunia based on the higher chromosome number, chromosome morphology, plant branching habit and type of flower bud estivation. |
| In some desert regions, certain animals escape the rigours of summer drought by entering a torpid state, estivation, that is similar in many ways to hibernation. |
| It was clear that nature was in preparation for her estivation. |
| First, it may be remembered that this period corresponds nearly to the active life of the animal before and after estivation. |
| It is thought that estivation behaviour, which implies the ability to breathe air, developed by the end of the Devonian Period, or during the Carboniferous, when this group invaded freshwater ecosystems. |
