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Diurnal animal : ウィキペディア英語版
Diurnality

Diurnality is a plant or animal behavior
characterized by activity during the day and sleeping, or other inactivity, at night. The common adjective is "diurnal".
==In animals==
Animals that are not diurnal might be nocturnal (active at night) or crepuscular (active primarily during twilight, i.e., at dusk and dawn).〔Gullan, P. J. and P. S. Cranston, 1994. The Insects: An Outline of Entomology. Chapman and Hall London. pg. 115.〕 Many animal species are diurnal, including many mammals (including humans), insects, reptiles and birds. In some animals, especially insects, external patterns of the environment control the activity (exogenous rhythms, as opposed to patterns inherent in the habitat).〔 Diurnality is descriptive; it refers to an observed 24-hour pattern, as opposed to ~24-hour circadian rhythms which are self-sustaining within the organism.
In many species, the animal switches from nocturnal to diurnal foraging depending on the environmental temperature. The reason for the switch allows the individual to maximize on feeding efficiency during summer time when it is warmer and lower their risk of predation during the winter.〔Fraser, Neil HC, Niel B. Metcalfe, and John E. Thorpe. "Temperature-dependent switch between diurnal and nocturnal foraging in salmon." Proceedings of the Royal Society of London B: Biological Sciences 252.1334 (1993): 135-139.〕 Diurnal insect include some bees and a specific example being the bee species ''Anthidium maculosum.'' These carder bees are diurnal and are active only when the temperatures are above freezing. Moreover, these bees are most active when there are plenty of resources such as flowers, from which they can extract pollen and nectar.〔Griswold, Terry, Victor H. Gonzalez, and Harold Ikerd. "AnthWest, occurrence records for wool carder bees of the genus Anthidium (Hymenoptera, Megachilidae, Anthidiini) in the Western Hemisphere." ZooKeys 408 (2014): 31.〕
Some mainly nocturnal or crepuscular animals have been domesticated as pets and have changed into diurnal animals to coincide with the cycle of human life. Examples are pet dogs and cats, which are derived from the wolf and the wild cat, respectively. However, these animals may exhibit their species' original behavior when they are born feral. Other animals have been forced from their normal cycle to an alternate one as a means of avoiding predators, such as beavers becoming nocturnal creatures after extended predation by humans.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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