trophosome


Also found in: Dictionary, Wikipedia.

trophosome

[′träf·ə‚sōm]
(invertebrate zoology)
The nutritional zooids of a hydroid colony.
References in periodicals archive ?
In all of them the trunk region is the longest section and houses the gonads and the trophosome.
2004)--apparently have a symbiont-housing organ, called a trophosome, originating from different germ lines.
A recent study by Sanchez and colleagues (2007) examined differential gene expression between tissues of Riftia (comparing gill, body wall, and trophosome), and found that cathepsin and chitinase precursor transcripts, carbonic anhydrase (RpCAbr), and other genes were highly represented in the gill tissue, whereas another carbonic anhydrase (RpCAtr), myohemerythrin, and other genes were highly specific to the trophosome tissue.
This organ, called a trophosome, is perfused with a blood-vascular system to facilitate transport of nutrients to and from endosymbionts (Southward et al.
3]) of symbiont-bearing trophosome tissue from each worm and extracted total DNA with the DNeasy isolation kit (Qiagen Inc.
The non-muscular esophagus, vestigial as only a cuticular tube in fourth stage larvae (J4s) and adults, passes through the pigmented region and the ganglionic region (associated with the nerve ring) and into the trophosome, a food-storage body (Figs.
As adults, they lack a functional digestive system and derive their nutrition from chemoautotrophic microbial symbionts hosted in a specialized tissue, the trophosome, located in their elongated trunk region (see Bright and Giere, 2005).
A pair of meandering oviducts extend through the trunk, surrounded by trophosome tissue.
Le trophosome de Riftia pachyptila et Tevnia jerichonana ( Vestimentifera): bioaccumulations metalliques et metabolisme du soufre.
Of all the hosts of chemosynthetic symbionts measured in previous studies, the vent tubeworm, Riftia pachyptila, has demonstrated the highest CA activity, especially in the plume (the primary gas-exchange tissue), and the trophosome tissue (the specialized organ in which the bacteria are housed in the trunk of the worm) (Kochevar et al.