Euglena spp.
Algal Group: Euglena (Euglenophyta)
Description
oblong cells; 45-70 µm; one or two flagella; can have many chloroplasts
Where we found it
Indian River and Suwannee Sound
Sebastian
DE;GJ;PI;HB;PR;SR
Frequency of occurrence
Indian River: 10% in 116 samples taken
Suwannee Sound: 6% in 120 samples taken
What Are The Effects On Clams?
Good
Why is it good?
acceptable food item for clams
Ecological considerations:
grows well in organically enriched waters
Eutreptia spp.
Algal Group: Euglena (Euglenophyta)
Description
oblong cells; 20-120 µm; two flagella; can have many chloroplasts
Where we found it
Indian River and Suwannee Sound
Sebastian
DE;GJ;PI;HB;PR;SR
Frequency of occurrence
Indian River: 9% in 116 samples taken
Suwannee Sound: 24% in 120 samples taken
What Are The Effects On Clams?
Good
Why is it good?
acceptable food item for clams
Ecological considerations:
grows well in organically enriched waters
small spherical green algae
Algal Group: Green Algae (Chlorophyta)
Description
spherical or oval-shaped cells; 5 µm in diameter; solitary or clustered (e.g., Chlorella)
Where we found it
Indian River and Suwannee Sound
Sebastian
DE;HB;SR
Frequency of occurrence
Indian River: 4% in 116 samples taken
Suwannee Sound: 2% in 120 samples taken
What Are The Effects On Clams?
Good
Why is it good?
acceptable food item for clams
Scenedesmus spp.
Algal Group: Green Algae (Chlorophyta)
Description
oval-shaped or crescent-shaped cells; approximately 3 µm wide, 20 µm long; appear in colonies of 2-32 cells, joined with long axes parallel, can have spines at ends
Where we found it
Indian River and Suwannee Sound
Sebastian
SR
Frequency of occurrence
Indian River: 3% in 116 samples taken
Suwannee Sound: 0% in 120 samples taken
What Are The Effects On Clams?
Good
Why is it good?
acceptable food item for clams
Pyramimonas spp.
Algal Group: Phytoflagellates (Prasinophyta)
Description
pyramid-shaped cells; 4-35 µm; four flagella
Where we found it
Indian River and Suwannee Sound
Sebastian
DE;GJ;PI;HB;PR;SR
Frequency of occurrence
Indian River: 54% in 116 samples taken
Suwannee Sound: 98% in 120 samples taken
What Are The Effects On Clams?
Good
Why is it good?
acceptable food item for clams
Chattonella subsalsa
Algal Group: Phytoflagellates (Raphidophyta)
Description
asymmetrical cells with one pointed end; 30-50 µm long; two flagella
Where we found it
Indian River
Sebastian
Frequency of occurrence
Indian River: 2% in 116 samples taken
Suwannee Sound: 0% in 120 samples taken
What Are The Effects On Clams?
Good; Bad
Why is it good?
acceptable food item for clams
Why is it bad?
This species has also been associated with production of brevetoxin, a neurotoxin responsible for neurotoxic shellfish poisoning (NSP). Toxicity of local strains has not been confirmed.
Ecological considerations:
grows well in organically enriched waters
