Saltwater rotifer
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Saltwater rotifer

Rotifers (Rotatoria) — the smallest of multicellular animals, together with the ciliates are part of the so-called “living dust”. Their sizes vary from 0.04 to 2 mm. Its name rotifers received for the presence of a rotary machine consisting of two beaters of the cilia on the anterior part of the body. The movement of the cilia creates a whirlpool through which small food organisms are sent to the mouth. Simultaneously with this apparatus, many forms of rotifers is swimming. Rotifers are less mobile than the infusoria, which makes them more desirable starter feed for larvae of the vast majority of fish. Small size, high proliferation rate, as well as the possibility of sustaining a culture in pure form do rotifers are very easy targets for rearing of juvenile fishes. The most commonly cultivated of the saltwater rotifer Brachionus plicatilis, because its the easiest to maintain in pure culture. This small rotifers — 100— 300 microns. The average weight of 1 million rotifers — 1.5 g Eat phytoplankton, bacteria, yeast. Males live for 2-3 days, females up to 2 weeks. Sexually Mature in 1-1. 5 days. Actionsee females reproduce by parthenogenesis, laying (2N) eggs. Misticheskie — give eggs, of which face males (N), or participate in pairing, putting resting (2N) eggs. The eggs are heavier than water. Rotifers coltivirus capacity 3-100 l, reaching a density of 100-300 individuals per 1 ml. Desirable very weak purge and side lighting. Culture enters stationary strength for 5-7 days.

The technology is extremely simple: take a piece of yeast the size of a large pea and fingers rubbed at the Bank of rotifers. Once the water clears up (for me it’s usually 2-3 day) add the next portion. I feed her fresh yeast or dry. Rotifer does not like strong aeration, if we use a very weak blow. I don’t use at all, then all culture is concentrated in the upper layer. The system itself is organized in the following way: on the windowsill is a three-liter Bank with rotifer, so the light during the day, but not strong. The room temperature is close to that, I think, is optimal. About once a month water change at the Bank. There is this: half a liter is a liter of water is most rich in rotifer poured into a separate container. Bank washed in hot water, as regular yeast it is covered with a rather disgusting and smelly bloom, after which rotifer results ago. In a separate container, at this time, a new portion of salted water. As I wrote, per liter of water is added a tablespoon of salt (with slide). Ordinary table salt, not iodized. After that you only add yeast and put on the windowsill.

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