dinoflagellates Flashcards
dino
whirl
pyrrh
flame
total primary productivity
rate which energy is converted by photosynthesis to organic substances
theca
series of membrane bound vesicles surrounding the interior
- fibrous cellulosic plates beneath the membrane
- joined by sutures
mesokaryotic nucleaus
- Chromosomes condensed (visible) and rod-shaped
- No histone proteins in chromosomes
- Some taxa have constant DNA replication
- Nuclear membrane persists
trichocyst
projecting organelles Membrane-bound crystalline rod
Trichocyst pores commonly occur at thecal plate junctions
theca parts
girdle/cingulum and sulcus
-epicone and hypocone
plate nomenclature
apical / antapical
-cingulum
pericingular, postcingular
theca ornamentation
sutures, reticulations, spines, and horns
tinsel girdle flagellum
pantonematic
whiplash sulcus flagellum
acronematic
eyespot types
- Simplest type: collection of lipid globules lying freely in cytoplasm (no membrane)
- Row of small globules within chloroplast
- Two rows of lipid globules surrounded by triple
membrane in cell periphery - Complex “eye” or ocellus (lens and pigment cup)
asexual -cyst formation
replacement of thece with thin amorphous sporopollenin-like wall that thickens
sexuality
-isogametes or anisogamets
planozygote
flagellated zygote
hypnozygote
nonflagellated zygotes (resting cytes)
ichthyotoxin
promotes epidermal sloughing
corals
provides coral with oxygen, waste removal and carbohydrates
calcium carbonate
deposited due to algae photosynthesis assists in coral calcification
red tides
mostly tropical
bioluminescent
atp reacts with luciferin to produce light
-burglar arlarm or startle
saxitoxin
endotoxing - not released until crushed
