Dinobryon

Dinobryon divergens, treeing

Dinobryon is a genus of Gold Brown algae ( Chrysophyceae ), with approximately 30 species.

Features

The representatives of the genus are unicellular or live in colonies gold brown algae. The cells have two flagella of different lengths and sitting in a funnel - to vase-shaped housing, the Lorica. The Lorica is between 15 and 65 microns long. The opening of the Lorica facing the cilium. The cells are fixed with a stem of the housing. They contain two laterally related golden brown plastids, which are different in size. Between them lies the nucleus. One of plastids has an eye patch. At the anterior end of the cell is a contractile vacuole.

The colonies arise from the fact that related the case of many cells. The colonies are afloat. Other species produce only single cells that float freely or sit on the substrate.

Asexual reproduction occurs by longitudinal division. A daughter cell remains in the housing, and the other is a new one. In colony- forming species, this occurs at the mouth of the nut housing. Sexual reproduction occurs by morphological isogamy: the male ciliated cells are attracted chemotactically. As a product creates a Stomatocyste.

Distribution and ecology

Dinobryon is a freshwater alga. It tends to occur in the cool season, in spring and autumn. It is in slightly acidic, oligotrophic to eutrophic waters can accommodate up easily. You sit tight or swim freely. Your diet is done mixotrophically.