Fat body

Organ for nutrient storage and conversion in arthropods

Fat body is a highly dynamic insect tissue composed primarily of storage cells. It is distributed throughout the insect's internal body cavity, in close proximity to the hemolymph as well as organs such as the epidermis, digestive organs and ovaries. Its main functions are nutrient storage and metabolism, for which it is commonly compared to a combination of adipose tissue and liver in mammals. However, it may also serve a variety of other roles, such as: endocrine regulation, systemic immunity, vitellogenesis, and the main site of production of antimicrobial molecules called antimicrobial peptides.

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