The samples of coral Siderastrea stellata, ascidian
and sponge Cinachyrella sp.
BotryUoides leachii is a sessile suspension-feeding ascidian
that lives in clonal colonies of adults, termed zooids, that organize in a series of ladder-like parallel rows, known as systems (Fig.
Ultrastructure of vegetative and sporulation tages of Haplosporidium ascidiarum from the Ascidian
Ciona intestinalis L.
To understand how maternal factors in ascidian
eggs establish the initial state of the gene regulatory network, we need to understand how the four main maternal factors (along with other currently unknown factors, if any) induce these nine distinct patterns of gene expression.
This interpretation is in accordance with our data, since the lowest concentrations of P were found in the ascidian
ISHII (1990): <<Primary structure of ascidian
trypsin inhibitors in the hemolymph of a solitary asci dian Halocynthia roretzi>>, Journal of Biochemistry, vol.
Chemical control of bacterial epibiosis on ascidians
Species harboring Prochloron as a symbiont have a wide
Thus, locales with high ascidian
populations hold great potential for scientific and commercial research.
Often, a pair lives within the mantle cavity or branchial region of their host, which is a mollusk or ascidian
These zones were characterized by a mussel-dominated assemblage at [approximately] 3 m; a hydroid and bryozoan dominated assemblage at [approximately] 5 m; a sponge, bryozoan, and ascidian
dominated assemblage at [approximately] 10 m; and a deeper assemblage of sponges, bryozoans, brachiopods, and ascidians
at [approximately] 18 m depth (Witman and Grange 1998).
Nonrandom utilization of sperm has been clearly documented in the ascidian
, Diplosoma listerianum, a sessile, colonial, clonal, marine filter-feeder (Bishop 1996; Bishop et al.