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Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.
Nocturnal luminosity has been found to positively correlate with the amount of nocturnal activity and negatively correlate with diurnal activity. In other words, an animal's activity distribution may be somewhat dependent on the presence of the lunar disc and the fraction of illuminated moon in relation to sunset and sunrise times.
Within the same laboratory populations of goldfish, some individuals may be spontaneously diurnal while others are nocturnal. [45] Goldfish can also be diurnal if food is more available by day, or nocturnal if food is available at night. [46] Salmon are mostly diurnal when temperature is high, but become more nocturnal if temperature plummets. [47]
A chimpanzee, a diurnal simian. Initially, most animals were diurnal, but adaptations have allowed some animals to become nocturnal, contributing to the success of many, especially mammals. [7] This evolutionary movement to nocturnality allowed them to better avoid predators and gain resources with less competition from other animals. [8]
Oligophagy is a term for intermediate degrees of selectivity, referring to animals that eat a relatively small range of foods, either because of preference or necessity. [2] Another classification refers to the specific food animals specialize in eating, such as: Carnivore: the eating of animals Araneophagy: eating spiders; Avivore: eating birds
Primary nutritional groups are groups of organisms, divided in relation to the nutrition mode according to the sources of energy and carbon, needed for living, growth and reproduction. The sources of energy can be light or chemical compounds; the sources of carbon can be of organic or inorganic origin.
32 types of saltwater fish for your aquarium. A saltwater aquarium is an exotic and striking addition to the home. But more than a striking piece of furniture, it’s a living habitat that is both ...
Duikers can be diurnal, nocturnal, or both. Since the majority of the food source is available in the daytime, duiker evolution has rendered most duikers as diurnal. A correlation exists between body size and sleep pattern in duikers. While smaller to medium-sized duikers show increased activity and scavenge for food during the daytime, larger ...