A membranous closing apparatus shuts the lorica opening in disturbed tintinnids of six genera belonging to four families. The homology of the apparatuses is investigated, using data from the literature and Mediterranean tintinnids studied in vivo and

A taxonomic survey on the tintinnids (Suborder Tintinnina) collected in subtropical waters of the Southern Brazil (22°S-34°S) was carried out, based in different oceanographic cruises covering shelf and oceanic waters. Eighty nine species were recorded,

Abundance, distribution and population structure of planktonic protozoans in the Southeastern Mediterranean off Egypt were investigated during the period from April 2008 to February 2010. Protozoan population constituted 5.4% of the total zooplankton