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Nos insetos, o corpo gorduroso pode ser considerado um centro de metabolismo intermediario e tambem o local de sintese de alguns componentes da hemolinfa. Com objetivo de obter maiores informacoes sobre essa estrutura, foi realizado um estudo para a sua caracterizacao morfologica em adultos de Hedypathes betulinus Klug. Os resultados mostram que a estrutura ocorre em duas porcoes, a primeira, aderida ao trato digestivo e a segunda, associada ao tegumento, denominando-se, corpo gorduroso perivisceral e parietal, respectivamente. Histologicamente o corpo gorduroso apresenta dois tipos celulares, os trofocitos e os enocitos. Os trofocitos apresentam na area citoplasmatica, vacuolos, nucleos esfericos, cromatina granular com variacoes na condensacao, e em alguns casos, foram observados nucleos deslocados para a periferia celular. A presenca de nucleolos multiplos em algumas celulas sugere alta atividade nuclear. Os enocitos foram observados associados aos trofocitos, com nucleos centrais de formato esferico e cromatina de aspecto granular dispersa; os nucleolos apresentaram-se proeminentes em numero variavel e diferem dos trofocitos pela ausencia de vacuolos, citoplasma granular, formato e tamanho das celulas. Abstract In insects, the fat body may be considered a center of intermediary metabolism and also the site of synthesis of some components of the hemolymph. Aiming to obtain more knowledge about this structure, a study for characterization of morphological Hedypathes betulinus Klug was carried out. The results show that it takes place in two parts: the first one is adhered to the digestive tract, and the second one, associated with the coat, called the fat body and parietal perivisceral, respectively. Histologically the fat body is composed of two cell types, the trophocytes and the oenocites. The trophocytes present, in its cytoplasmic, vacuoles, spherical nuclei, granular chromatin with variations in condensation, and in some cases, it was observed nuclei displaced to periphery cells. The presence of multiple nucleoli in some cells suggests high nuclear activity. The oenocites were observed associated with trophocytes with central nuclei of spherical shape and granular appearance, dispersed chromatin, the nucleoli were prominent in variable number and differ from trophocytes by the absence of vacuoles, cytoplasm granular, shape and size of cells.

Morfo-histologia do corpo gorduroso perivisceral em adultos de Hedypathes betulinus (Klug, 1825) (Coleoptera, Cerambycidae)