OSTRAKODIES (Ostrazda) – Subclassed Finy Organisms of Class Resistant (SRUSTSEA), which received the name from the Greek word “Ostrikon”, which means “shell”, because at first glance, they resemble small bean-shaped beans. The length of the body does not exceed more than 1-2 mm and it is closed in a two-part bushing, from which only antennas in front and one pair of gentle legs on the rear of the shell. When disturbed, these parts of the body are drawn and the shell is closed firm, so the animal is slowly sinking to the bottom of the water. Some species are great swimmers, but most live at the bottom, crawling along the surface or water plants. Feed with water filtration, keeping feeding particles, and some species are active predators. Widespread in freshwater ecosystems and in the seas. Their shells are used as a basic indicator in the stratigraphy of sediments with different geological age, from the Paleozoic, so S “to date. So far, more than 2000 percent species have been known in the world, two thirds are marine organisms. In Macedonia, the presence of 172 species is registered, most of which live in our three natural lakes. Of the 44 endemic species of sharks in Macedonia, 32 are registered only in Ohrid Lake. Lit.: S. Petkovski, Ostrikodi (Trowzea: Ostrazda) of Macedonia, in: Fauna of Macedonia C, Mus. Mac. SCI. Nat., Skopje, 1998, 60-77; S. Petkovski, Faunal Diversitis, in: Coon Studs for Biodelysitis off the Republic of the Republic of Macendonia (FIRST National Report). Ministry of Environment and Piisisal Planing, Skopje, 2003. St. P.- V. Sid. AM: Kumanovo and Kumanovo in New 1941-1945. Documents, Kumanovo, 1988. Lit.: Miodrag Arsovski-Bol, Chronology 1941-1945 on the more significant events of the NOB and the People Revolution in Kumanovo and Kumanovo, Kumanovo, 1974; Memorial Collection of the dead fighters of new and victims of the fascist terror from Kumanovo and Kumanovo 1941-1945, Kumanovo, 1976, 186. S. Ml.
Original article in Macedonian language Cyrillic alphabet
Кириличен напис ОСТРАКОДИ