In animal behavior, diurnality indicates an animal that is active during the daytime and rests during the night. Ethology ( from Greek ἦθος ethos, "character" and λόγος logos, "knowledge") is the scientific study of Animal A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the Night or nighttime is the period of Time when the Sun is below the Horizon. Animals that are not diurnal might be nocturnal (active at night) or crepuscular (active primarily during twilight, i. As an Animal behavior, nocturnality describes sleeping during the Daytime and being active at Night - the opposite of the diurnal Crepuscular is a term used to describe animals that are primarily active during Twilight, hence at Dawn and at Dusk. Twilight is the time before Sunrise, called Dawn, and the time after Sunset, called Dusk. e. , at dusk and dawn). [1] Many animal species are diurnal, including many mammals, insects and birds. Mammals ( class Mammalia) are a class of Vertebrate Animals characterized by the presence of Sweat glands, including sweat glands Insects ( Class Insecta) are a major group of Arthropods and the most diverse group of Animals on the Earth with over a million described Birds ( class Aves) are bipedal endothermic ( Warm-blooded) Vertebrate animals that lay eggs. The diurnal pattern is often controlled internally by the circadian rhythm (endogenous rhythm) of the animal. The word endogenous means "arising from within" the opposite of Exogenous. In some animals, especially insects, external patterns of the environment control the activity (exogenous rhythms). Exogenous (or exogeneous) (from the Greek words "exo" and "gen" meaning "outside" and "production" refers to an action or [2]
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. Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus Examples are pet dogs and cats, which are derived from the wolf and the wild cat. The dog ( Canis lupus familiaris) is a domesticated Subspecies of the gray wolf, a Mammal of the Canidae family of the order WikipediaManual of Style (spelling, articles should conform to one overall spelling style of English typically the one most linked to the article topic (if it is geographic The grey wolf or gray wolf ( Canis lupus) also known as the timber wolf or simply wolf, is a Mammal of the order Carnivora The Wildcat ( Felis silvestris) sometimes Wild Cat or Wild-cat, is a small felid native to Europe, the western part of Asia However these animals may exhibit their species' original behavior when they are born feral. A feral organism is one that has escaped from Domestication and returned partly or wholly to its wild state
Notes
- ^ Gullan, P. J. and P. S. Cranston, 1994. The Insects: An Outline of Entomology. Chapman and Hall London. pg. 115.
- ^ Gullan and Cranston.
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