"P . mammillata " is one of a small number of ascidians that accumulate the element vanadium in their blood cells.
32.
Solitary ascidians release many eggs from their atrial siphons; external fertilization in seawater takes place with the coincidental release of sperm from other individuals.
33.
They are protandrous hermaphrodites, except for " Oikopleura dioica " which is gonochoric, and a larva resembles the tadpole larva of ascidians.
34.
In the colonies of the colonial ascidian-cyanophyte symbiosis Trididemnum solidum, their colors are different depending on the light regime in which they live.
35.
The Brachyury ( T ) gene, which is expressed in the ascidian notochord, is not expressed in the stomochord, and collagen is absent.
36.
It is considered of ascidian affinity, due to the sac-like morphology and a series of distinctly perforated bands reminiscent of a tunicate pharynx.
37.
If " B . hunti " is a tunicate, it could be the oldest ascidian fossil known as of its publication in 2012.
38.
This solitary ascidian is sometimes referred to as the " red-throated ascidian ", as its two siphons are a vivid red in colour.
39.
This solitary ascidian is sometimes referred to as the " red-throated ascidian ", as its two siphons are a vivid red in colour.
40.
In 1845, he first announced the presence in the test of some Ascidians of what he called " tunicine ", a substance very similar to cellulose.
