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Aestivation (Latin: aestas (summer); also spelled estivation in American English) is a state of animal dormancy, similar to hibernation, although taking place in the summer rather than the winter. Aestivation is characterized by inactivity and a lowered metabolic rate, that is entered in response to high temperatures and arid conditions. [ 1 ]
Aestivation, also spelled estivation, is an example of consequential dormancy in response to very hot or dry conditions. It is common in invertebrates such as the garden snail and worm but also occurs in other animals such as lungfish , salamanders , desert tortoises , and crocodiles .
Aestivation or estivation is the positional arrangement of the parts of a flower within a flower bud before it has opened. Aestivation is also sometimes referred to as praefoliation or prefoliation , but these terms may also mean vernation : the arrangement of leaves within a vegetative bud.
Siren intermedia is unique among amphibians in its ability to construct a mucoid cocoon that slows down dehydration during aestivation, and the lesser siren can withstand long periods of food deprivation without ill effects. During aestivation, respiration slows down significantly, and gills atrophy over the next 16 or more weeks. [8]
It was written around 350 BC. The whole work is roughly a study in animal anatomy and physiology; it aims to provide a scientific understanding of the parts (organs, tissues, fluids, etc.) of animals and asks whether these parts were designed or arose by chance.
Aestivation may refer to: Aestivation, a state of animal dormancy, similar to hibernation; Aestivation (botany), the positional arrangement of the parts of a flower within a flower bud before it has opened; Aestivation hypothesis, a hypothesized solution to the Fermi paradox
Ahead, we’ve rounded up 50 holy grail hyperbole examples — some are as sweet as sugar, and some will make you laugh out loud. 50 common hyperbole examples I’m so hungry, I could eat a horse.
The inland crab has undergone numerous changes of specific name, changing genera, subgenera, and subfamilies, including Parathephusa, Liotelphusa, and Holthuisana. [4] Due to the loss of type specimens, similarities between certain genera, and most recently molecular testing, the species is currently grouped with six other species in the genus Austrothelphusa. [4]