Morfologia das glândulas mandibulares dos Quatis

Abstract

Nasua nasua (coatis) are animals of daytime habit, widely found in Brazilian territory. These animals belong to the masked family as well as the naked hand. Its behavior is diurnal and its characteristic physical elements are the trumpet-shaped snout and the long tail used to maintain balance. For the study of the mandibular glands, 3 orthothanged animals were used, from the Scientific Creator-CECRIMPAS (IBAMA 02027.003731 / 04-76). The techniques used were latex injection into the abdominal aorta to replenish the arterial bed, followed by fixation in a 10% formaldehyde solution. The coatis mandibular salivary glands were identified, dissected, extracted, processed and prepared for observation under an optical microscope in the hematoxylin and eosin stains, toluidine blue, picrossirius and PAS and photocumented. The coatis mandibular glands were found just below the masseter muscle and were 2.9 cm long, 1.5 cm wide and 0.8 cm thick on average. It can be concluded that, macroscopically, the mandibular salivary glands of coatis are similar in appearance and positioning to those of the other carnivores already studied. They are macroscopically multilobed and microscopically multilobulated and are constituted by mixed acini (serocomucous), a few serous acini, have striated ducts (secretors) and intercalated ducts that lead the saliva from the alveoli to the secretory ducts.