The genus Dermamoeba unifies oblong, flattened amoebae of lingulate morphotype, possessing a thick multilayered cell coat. It includes two species – D. granifera and D. minor. In this paper we describe the third species of this genus, D. algensis n. sp. This species is algivorous; engulfing a large algal cell, it destroys part of the cell coat liberating the plasma membrane, which forms the food vacuole. Thus the glycocalyx never appears inside the phagosome. This observation confirms that some of the thick-coated amoebae may use this way to avoid energetically costly digestion of their own glycocalyx. Studies of the physiology of this organism show that it feeds most actively at the temperature 22-25 oC; below and above this temperature the feeding intensity drastically decreases. It can survive NaCl concentrations up to 5%, which roughly corresponds to 50 ppt salinity, thus it may be considered as possessing a wide range of salinity tolerance.
|Журнал||European Journal of Protistology|
|Состояние||Опубликовано - 2011|