Aspectos anatômicos dos músculos mediais da coxa do quati (Nasua nasua, Linnaeus 1766)
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Data
2014-12
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Universidade Federal de Uberlândia
Resumo
The coati (Nasua nasua) is a mammal of the Carnivora order and Procyonidae family. This species is present in all Brazilian biomes and is distributed throughout South America, from northern Colombia to northern Argentina, being most common in neotropical forests of this region. Omnivores, they feed mostly on fruits, both on the ground as in trees, which make them important seed dispersers. Their arboreal habits require more strength and mobility of their pelvic limbs than in canids, which they evolutionarily diverged from, but still share the same Suborder. Thus, this study examined the anatomical aspects of the muscles that integrate the medial group of the thigh of coatis, which had its
general aspects, location, shape, origin, insertion, syntopy and actions evaluated. Five adult animals (two females and three males) provided by IBAMA-GO (License: 98/2011) were used in this research. They were fixed with 10% formaldehyde solution and dissected after a minimum period of 72 hours. The muscles which comprise the medial group of the thigh of coatis are the gracilis, pectineus, magnus, brevis and longus adductors and external obturator. All muscles show particularities regarding the origin and/or insertion. The gracilis muscle is very broad and does not contribute to the formation of the common calcaneal tendon. The pectineus muscle is inserted on the half of the caudal surface of the femur. The three individual adductors are arranged like three layers that increase craniocaudally, being the adductor brevis positioned between the longus cranially and the magnus caudally. Their insertions are arranged longitudinally and parallel throughout the caudal surface of the femur, increasing in extension from the medial (adductor longus) toward the lateral adductor magnus). The abilities acquired by coatis in that diverged from canids, such as the arboreal habits, have been accompanied by anatomical adaptations in this muscle group, with several of them resembling more the pattern found in cats than in dogs. The adaptations are mainly characterized by changes in the origins and/or insertions, size, and in the case of adductor muscles, also in their pattern of individualization and arrangement.
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Palavras-chave
Animais silvestres, Carnívoros, Membro pélvico, Músculos adutores, Procionidae, Adductors muscles, Carnivore, Pelvic limb, Procyonidae, Wild animals
Citação
GUIMARÃES, Flávio de Rezende; CARDOSO, Júlio Roquete; SADDI, Thelma Michella; ARAÚJO, Luciana Batalha de Miranda; ARAÚJO, Eugênio Gonçalves de. Aspectos anatômicos dos músculos mediais da coxa do quati (Nasua nasua, Linnaeus 1766). Bioscience Journal, Uberlândia, v. 30, n. 6, p. 1853-1863, nov./dez. 2014.