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A cat hair showing agouti coloration A domestic rabbit with agouti coloration. Agouti is a type of fur coloration in which each hair displays two or more bands of pigmentation. [1] [2] The overall appearance of agouti fur is usually gray or dull brown, [3] although dull yellow is also possible.
White-bellied agouti A W mice have agouti coloration, with hairs that are black at the tips, then yellow, then black again, and white to tan bellies. [4] Agouti A looks like A W but the belly is dark like the back. [4] Black and tan a t causes a black back with a tan belly. A/a t heterozygotes look like A W mice. [4]
They weigh 2.4–6 kg (5.3–13.2 lb) and are 40.5–76 cm (15.9–29.9 in) in length, with short, hairless tails. [2] The related pacas were formerly included in genus Agouti, but these animals were reclassified in 1998 as genus Cuniculus. [3] The Spanish term is agutí. In Mexico, the agouti is called the sereque. [4]
Agouti-signaling protein is a protein that in humans is encoded by the ASIP gene. [5] [6] It is responsible for the distribution of melanin pigment in mammals.[7] [8] Agouti interacts with the melanocortin 1 receptor to determine whether the melanocyte (pigment cell) produces phaeomelanin (a red to yellow pigment), or eumelanin (a brown to black pigment). [9]
Agouti (coloration), fur coloration in which each hair has alternating dark and light bands; Agouti-signalling protein or ASIP, a circulating hormone encoded by the agouti gene that acts as an antagonist at melanocortin receptors; Agouti-related peptide, a neuropeptide produced in the brain by the AgRP/NPY neuron
Red-rumped agoutis weigh about 3 to 6 kilograms (6.6 to 13.2 lb). They are about 48 to 64 cm (19 to 25 in) long. The females are larger than males but otherwise look similar. They are brownish with darker spots on the upper body. The fur becomes more orange as it goes past (going down) the middle area of the animal.
Dasyproctidae is a family of large South American rodents, comprising the agoutis and acouchis. [1] Their fur is a reddish or dark colour above, with a paler underside. They are herbivorous, often feeding on ripe fruit that falls from trees.
[2] The brown agouti has an orange-brown body, with an average length of 61 cm (24.01 in), and a weight of 1.8 kg (3.96 lbs). [3] Dark head, rump, and midline of the back. Peruvian individuals have a fairly different and distinctive coloration (see text below). [2] The species is commonly preyed upon by the South American jaguar. [3]