Live organisms will arrive in 50mL conical tubes of Artificial Seawater (ASW) and will be fed before shipment. Organisms were obtained from an established lab culture in 2026. More specific information concerning geography or temperature/weather conditions available by request via email.
Lifespan | 4-10 days |
Salinity | 26-28 ppt |
Temperature | 18–22 °C |
pH | 7.9-8.2 |
Diet | Tetraselmis chuii, Nannochloropsis sp. |
Tank volume | 1L |
Size | 160-240μm long |
Marine Rotifer (Brachionus manjavacas)
Brachionus manjavacas is an extremely small, planktonic marine rotifer widely used as live feed and as a laboratory model for ecology, toxicology, and life-history studies. They are fast-reproducing and relatively easy to maintain under stable conditions. Rotifers can be cultured in small containers or tanks with gentle aeration. Use artificial seawater or filtered natural seawater. They feed primarily on phytoplankton such as Tetraselmis chuii, Nannochloropsis sp., or other microalgae will suffice. Add live phytoplankton to the system daily, maintaining the water slightly green but not opaque and dark green. Overfeeding can quickly degrade water quality. Partial water changes should happen weekly, watch population density and if it is extremely dense then thin out the culture. Rotifers tolerate crowding but will crash rapidly if ammonia accumulates or oxygen drops. Cultures can reproduce asexually under favorable conditions, allowing populations to grow fast. For experimental use, cultures can be maintained at lower densities with frequent water changes to reduce variability.
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