Fat Body

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fat body

[′fat ‚bäd·ē]
(invertebrate zoology)
A nutritional reservoir of fatty tissue surrounding the viscera or forming a layer beneath the integument in the immature larval stages of many insects.
(vertebrate zoology)
A mass of adipose tissue attached to each genital gland in amphibians.

Fat Body

 

(1) Areolar tissue in the body of insects and some other arthropods that fills the spaces between the internal organs and underlying walls of the body. The cells of the fat body are rich in fat (hence the name). It is filled with tracheae and may be white, orange, yellow, or green. The cells of the fat body are the site where nutrients (fats, proteins, and carbohydrates) accumulate and where metabolic products (uric acid salts and so forth) accumulate and are excreted. In larvae, the fat body consists of external (parietal) and internal (visceral) lobes. This division is indistinct in adult insects.

In some luminescing insects, the fat body or a separate organ contains a luminescing substance called luciferin. In many insects, the fat body contains the so-called mycetomes—symbiontic microorganisms (bacteria, fungi) that participate in metabolism and are found in certain parts of the fat body.

(2) In amphibians, the fat body is a yellow irregularly shaped structure located above each testis that nourishes the testis and the spermatozoa developing in it.

References in periodicals archive ?
With their unbalanced representations of slender and fat bodies, the media disseminate standards for physical appearance and beauty.
Liver and fat bodies, the storage organs (Naya et al., 2010), did not feature sex differences in this study.
Throughout the commentary, we use the term fat to demonstrate our solidarity with fat activists, fat studies scholars, and fat bodies, as well as to draw on the political potential of this word to destigmatize body weight as one aspect of normal human variation.
Extracting Fat Bodies. Two hundred larvae which had been frozen as described above were taken for each experiment so that the fat bodies could be dissected with the aid of entomological fine forceps and pins.
Induction of transcripts encoding the antimicrobial peptides virescein, heliomicin, heliocin, gloverin, and Hv-3-Tox, in the major immuneresponsive tissues of the fat bodies and hemocytes, by bacterial infection is reported here.
The presence of fat bodies in either of these texts would undermine the purported goal of promoting healthy bodies through the consumption of healthy food, and as such, they are excluded.
In contrast, contents available via different media tend to associate fat bodies with personal failure.
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