vitellarium

plural vitellariums · plural vitellaria

1. A type of gland, in flatworms and similar organisms, that secretes yolk.

   Germarium and vitellarium are distinct and the latter contains one or two small, immature basal oocytes.

   2015 July 8, “Convergent Reduction of Ovariole Number Associated with Subterranean Life in Beetles”, in PLOS ONE, →DOI

   2 more examples

   In the hymenolepid cestode Fimbriaria fasciolaris, the vitellaria and uterus are continuous throughout the strobila.

   1988, K. G. Adiyodi, Reproductive Biology of Invertebrates, Accessory Sex Glands, page 41

   The abundance of these proteins in the independent ovary section dataset were assessed using linear mixed models to compare abundance in ovary sections (four levels: germarium, early vitellariums, late vitellarium, and germarium).

   2025 February 24, McAfee, Alison; Marshall, Katie; et al.; [], “Virus infection of honey bee queens alters lipid profiles and indirectly suppresses a retinue pheromone component via reducing ovary mass”, in bioRxiv, →DOI, retrieved 25 Apr 2025