21632222
not annotated - annotated - LINNAEUS only
Carnivorous planktonic Difflugia (Protista, Amoebina Testacea) and their predators.
Four planktonic species of Difflugia co-occurring in a south Chinese reservoir were found to be carnivorous, but the diet was widest in the largest species (D. tuberspinifera) and narrowest in the smallest (D. hydrostatica). It included rotifers, ciliates, dinoflagellates, floating eggs, and small particles associated with organic debris. Scavenging and cannibalism were also observed. Species with a collared test (D. biwae, D. mulanensis) showed a form of suction-feeding, while species with teeth on the pseudostome used these, together with their pseudopods, as "inverted crown corks", providing leverage for opening the lorica of their (rotifer) prey. Predators of Difflugia included cyclopoid copepods. In addition, the rotifers Asplanchna priodonta, Ploesoma hudsoni and, occasionally, big ciliates (Stentor sp.) all ingested their prey as a whole.
Ann file
T1 Species 855 871 Ploesoma hudsoni
N1 Reference T1 Taxonomy:360690
T2 Species 243 260 D. tuberspinifera
N2 Reference T2 Taxonomy:1603556 Difflugia tuberspinifera
T3 Species 833 853 Asplanchna priodonta
N3 Reference T3 Taxonomy:1917099 Asplanchna priodonta
T4 Species 514 527 D. mulanensis
N4 Reference T4 Taxonomy:1603558 Difflugia mulanensis
T5 Species 504 512 D. biwae
T6 Species 293 308 D. hydrostatica