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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 106, No. 6, 2011, pp. 742-747
Bioline Code: oc11125
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 106, No. 6, 2011, pp. 742-747

 en A comparative study of fat body morphology in five mosquito species
Martins, Gustavo; Serrão, José; Ramalho-Ortigão, José & Pimenta, Paulo

Abstract

The insect fat body plays major roles in the intermediary metabolism, in the storage and transport of haemolymph compounds and in the innate immunity. Here, the overall structure of the fat body of five species of mosquitoes ( Aedes albopictus check for this species in other resources , Aedes fluviatilis check for this species in other resources , Culex quinquefasciatus check for this species in other resources , Anopheles aquasalis check for this species in other resources and Anopheles darlingi check for this species in other resources ) was compared through light, scanning and transmission electron microscopy. Generally for mosquitoes, the fat body consists of lobes projecting into the haemocoel and is formed by great cell masses consisting of trophocytes and oenocytes. Trophocytes are rich in lipid droplets and protein granules. Interestingly, brown pigment granules, likely ommochromes, were found exclusively in the trophocytes located within the thorax and near the dorsal integument of Anopheles, which is suggestive of the role these cells play in detoxification via ommochrome storage. This study provides a detailed comparative analysis of the fat body in five different mosquito species and represents a significant contribution towards the understanding of the structural-functional relationships associated with this organ.

Keywords
fat body, trophocyte, ommochrome, Aedes, Culex, Anopheles

 
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