Tem evidence of urocytes in the cockroach fat body

Wren, H. N.

doi:10.1016/0040-8166(91)90084-7

Cited by 1 publication

(1 citation statement)

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“…The main feature of urocyte cytoplasm of M. quadrifasciata pupae is the presence of large amounts of granules with different content and rare cytoplasm organelles, similar to urocytes of termites (Sobotnik et al, 2006; Costa-Leonardo et al, 2013) and cockroaches (Wren, 1991). In addition to urocytes, we found that trophocytes in the fat body of bees also have storage granules with different contents similar to workers and virgin queens of M. bicolor (Paes-de-Oliveira & Cruz-Landim, 2003), and physogastric queens of M. quadrifasciata (Paes-de-Oliveira & Cruz-Landim, 2006), suggesting that urocytes may be modified trophocytes.…”

Section: Discussionmentioning

confidence: 99%

Histochemistry and Ultrastructure of Urocytes in the Pupae of the Stingless BeeMelipona quadrifasciata(Hymenoptera: Meliponini)

Furtado¹,

Azevedo²,

Martins³

et al. 2013

Microsc Microanal

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The main cell types of the adult bee fat body are trophocytes and oenocytes; however, in pupae of some newly emerged bees, trophocytes are modified into cells called urocytes, which possibly function as a substitute for Malpighian tubules during metamorphosis when larval tubules are not functional and/or storage of urate salts is required. This study evaluated the morphology of urocytes in the stingless bee Melipona quadrifasciata and the possibility of maintaining these cells in primary culture. The urocytes M. quadrifasciata are white spherical cells with an irregular surface as observed by stereomicroscopy. They may be found individually or in groups associated with tracheae. Urocytes have a single, small, and spherical nucleus and cytoplasm rich in neutral polysaccharides, lipid droplets, protein, and granules containing calcium and urate salts. Our findings suggest that urocytes play a role in storage of neutral polysaccharides and calcium in M. quadrifasciata pupae and that these cells can be cultured for 72 h.

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Section: Discussionmentioning

confidence: 99%