Scrippsiella velellae
Diagnosis
Unicellular alga symbiotic, located in hospite as coccoid (non-motile) cells 1’7-1 8 pm in diameter, within endodermal cells of the gonophores and medusae, dividing mitotically in the coccoid state in lzospite and in culture. Large nucleus with approximately 90 chromosomes; nuclear envelope comprised of two membranes with pores. Chloroplast envelope comprised of three membranes; chloroplast thylakoids predominantly in groups of two; two pyrenoids with invasive chloroplast thylakoids. “Accumulation body” present in host and in culture. Trichocysts present in hospite and in culture.
Type species
The type species (holotype) of the genus Scrippsiella is Scrippsiella sweeneyae Balech ex A.R.Loeblich III.
Original description
Reference(s)
Observation site(s)
HOSTS
Association with... | Region origin | Name of site | In reference... |
---|---|---|---|
Velella velella | California Coast | Santa Barbara |
SCRIPPSIELLA VELELLAE SP. NOV. (PERIDINIALES) AND GLOEOKINIUM VISCUM SP. NOV. (PHYTODINIALES), DINOFLAGELLATE SYMBIONTS OF TWO HYDROZOANS (CNIDIARIA). Journal of Phycology 29:517 - 528. doi: 10.1111/jpy.1993.29.issue-410.1111/j.1529-8817.1993.tb00153.x (1993) |