Scientific Classification
Domain: Eukaryota | Major Lineage: Stramenopiles | Phylum: Ochrophyta | Class: Eustigmatophyceae | Order: Eustigmatales | Family: Monodopsidaceae | Genus: Nannochloropsis | Identification: Nannochloropsis sp., Japanese Strain
Japanese Strain Profile
PodDrop’s Japanese Strain is maintained as a marine Nannochloropsis culture. “Japanese Strain” is a culture designation and should not be interpreted as a formally recognized species name, verified geographic origin, or published strain-accession number. Because species-level identification has not been confirmed through genetic analysis or an authenticated culture collection, the organism is identified conservatively as Nannochloropsis sp.
Members of Nannochloropsis are small, nonmotile, unicellular photosynthetic microorganisms belonging to the eustigmatophytes. Their cells are generally only a few micrometres in diameter, although cell dimensions and appearance can vary with culture conditions, growth phase, and analytical method. Their small size and ability to remain suspended under suitable aeration make them useful in several marine live-feed and culture applications.
Nutritional Composition
Nannochloropsis cultures are widely studied for their lipid content, fatty-acid composition, and photosynthetic pigments. However, their biochemical composition is not fixed. Protein, carbohydrate, total lipid, fatty-acid, and pigment concentrations can change substantially in response to nutrient availability, light intensity, temperature, salinity, culture density, and growth phase.
Some Nannochloropsis strains can contain eicosapentaenoic acid (EPA), but the concentration varies among strains and culture conditions. No specific EPA, protein, lipid, amino-acid, or pigment concentration is guaranteed for this product unless supported by current lot-specific laboratory analysis.
The cells possess a comparatively resistant cell covering. Consequently, nutritional availability and digestibility depend on the consuming organism, feeding method, culture condition, and residence time within the food chain. The culture should not automatically be considered a complete diet for every marine organism.
Aquaculture Uses
Nannochloropsis is commonly used within marine hatchery and live-feed systems. Potential applications include supporting rotifer cultures, selected copepod cultures, and other compatible live-feed organisms. It may also be incorporated into green-water or mixed-microalgae protocols where small suspended cells are appropriate.
Suitability depends on the target organism, developmental stage, feeding behavior, cell-size requirements, and the complete nutritional program. For many applications, Nannochloropsis is most appropriately used as one component of a varied microalgal diet rather than as the sole nutritional source.
Results can differ among culture systems. Reproductive performance, population density, enrichment value, and consumer growth should be evaluated under the user’s own operating conditions.
Cultivation Requirements
Maintain the culture under stable conditions using appropriately prepared water, a suitable microalgal nutrient medium, consistent illumination, and gentle aeration or regular mixing. Avoid abrupt changes in temperature, salinity, lighting, or nutrient concentration.
Use clean vessels and dedicated equipment to reduce cross-contamination. Monitor the culture for unexpected color changes, excessive settling, unusual odor, reduced growth, or the appearance of competing microorganisms. Maintaining a separate backup culture is recommended when continuity is important.
This product is a living culture and should not be assumed to be axenic, sterile, pathogen-free, or genetically authenticated unless those characteristics are confirmed through applicable lot-specific testing.
Reef Applications and Limitations
Live Nannochloropsis may be introduced into compatible marine aquarium and culture systems as a suspended microalgal input. Actual capture and utilization vary among organisms, filtration systems, water conditions, and husbandry practices.
Begin with the current product directions and observe water clarity, nutrient levels, oxygenation, filtration response, and animal behavior. Avoid excessive additions that produce persistent turbidity or undesirable nutrient accumulation.
This culture is not represented as a treatment for dinoflagellates, cyanobacteria, disease, nutrient imbalance, or other aquarium problems. It does not guarantee coral growth, coloration, copepod reproduction, or improved water quality. Use it as one component of an appropriate and varied husbandry or live-feed program.