Ref ID : 2795
Walter Koste; [Zur Morphologie, Systematik und Okologie von neuen monogononten Radertieren (Rotatoria) aus dem Uberschwemmungsgebiet des Magela Creek in der Alligator-River-Region Australiens, N.T. Teil I]. Osnabrucker naturwiss.Mitt. 8:97-126, 1981
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Plankton samples were collected 1980 by Mr. Russel Tait, Ja-Ja Camp, Pancontinal Mining, Darwin, Australien N.T., from billabongs of Magela-Creek, confluent of East-Alligator-River, near Jabiluka. Parts of these filtrates (3-5 ml) were separated by Dr. R.J. Shiel; Zoological Department, The University of Adelaide, Adelaide, S.A. and sent to me for identification the rotifers. After closing the investigations 174 species incl. 25 new for the continent can be listed. 4 new Rotifers: Dicranophorus halbachi n. sp., Lepadella (s. str.) lindaui n. sp., Lepadella (s. str.) minorui n. sp. and Testudinella greeni n. sp. are presented with descriptions, figures and tables to clear up their systematical degree and validity. Ecological dates were given. In addition to world-wide spread rotifer like Balatro calvus Claparede, Cephalodella panarista Myers, Testudinella insinuata Hauer and interesting aberrations of well known species e.g. Lepadella ovalis (O.F.M), Lepadella latusinus (Hilgendorf) and Notommata pachyura (Gosse) are recognized. The general impression of the investigated Rotifer-fauna shows a far reaching resemblance with the respective fauna of the neighbouring Indonesia (Java, Sumatra, Bali) studied and descripted by Hauer (1937/38). The Australian Tropical Rotifer-associations are also characterized by most cosmopolitical species, co-existing with several pansubtropical and pantropical Rotifers, e.g. Lecane papuana (Murray), L. leontina (Turner), Keratella lenzi Hauer, K. javana Hauer; Cephalodella mucronata Myers, Testudinella tridentata Smirnov but also few endemics, e.g. Brachionus dichotomus Shephard and Br. dichotomus reductus Koste & Shiel. There are further investigations necessary to decide that the new descripted taxa are also endemics of the Australian continent.