Parvilucifera prorocentri
Diagnosis
Diagnosis_species: Biflagellate zoospores reniform, about 4 mm long and with transverse flagellum, small alveoli, refractile body, a central mitochondrion, one nucleus with condensed chromatin directly beneath the nuclear envelope, large lipid droplet(s), micronemes, bipartite trichocysts with bodies square in cross section that are oriented toward the cell apex and a cluster of oblong microbodies. A reduced, sheet-like pseudoconoid consisting of 4–5 microtubules positioned above an orthogonal pair of basal bodies. Early developmental stage of intracellular sporangium about 5–15 mm in diam that formed a complex three-layered envelope with a convoluted midlayer surrounding spherical bodies and amorphous spaces; middle stages about 20–25 mm in diam and consisting of a robust cyst wall containing an undifferentiated mass; late stages consisting of a mass of differentiated zoospores. Pronounced germ tube about 4–5 mm in diam and 10–15 mm long. Prior to spore differentiation, the sporangia contain nuclei without condensed chromatin, mitochondria, lipid droplets, trichocysts and basal bodies.
Body_spores_length: 4 µm
Etymology
Refers to the genus of the type dinoflagellate host, Prorocentrum.
Type species
The type species (holotype) of the genus Parvilucifera is P. infectans.
Type illustration / Type locality / Type specimen
Type_locality: Boundary Bay, British Columbia, Canada (49100N, 123180W).
Type_specimen: Both resin-embedded parasites used for TEM and parasites on gold sputter-coated SEM stubs have been deposited in the Beaty Biodiversity Research Centre (Marine Invertebrate Collection) at the University of British Columbia, Vancouver, Canada. The embedded parasites were fixed in situ within the host cells.
Ecology
Substrate_spores: planktonic
Substrate_trophont: endophytic
Sociability_spores: solitary
Sociability_trophont: solitary
Salinity: marine
pH : neutral
Life cycle
Lytic cycle, zoosporic parasite.
Generation: <1 month
Reproduction_mode: asexual
Symbiont: horizontal_active-penetration
Feeding behaviour
Mode of locomotion
Identification criteria
Reference(s)
Attached phylogeny
Observation site(s)
HOSTS
Association with... | Region origin | Name of site | In reference... |
---|---|---|---|
Prorocentrum fukuyoi | Boundary Bay | Centennial Beach |
Molecular Phylogeny of Parvilucifera prorocentri (Alveolata, Myzozoa): Insights into Perkinsid Character Evolution. Journal of Eukaryotic Microbiology 56:251 - 256. doi: 10.1111/jeu.2009.56.issue-310.1111/j.1550-7408.2009.00395.x (2009) |
Prorocentrum fukuyoi | Boundary Bay | Centennial Beach |
Ultrastructure of a novel tube-forming, intracellular parasite of dinoflagellates: Parvilucifera prorocentri sp. nov. (Alveolata, Myzozoa). European Journal of Protistology 44:55 - 70. doi: 10.1016/j.ejop.2007.08.004 (2008) |