TY - JOUR TI - Trichodina diaptomi (Ciliophora: Peritrichia) from Two Calanoid Copepods from Botswana and South Africa, with Notes on its Life History AU - West, Deidre AU - Basson, Linda AU - Van As, Jo TI - Trichodina diaptomi (Ciliophora: Peritrichia) from Two Calanoid Copepods from Botswana and South Africa, with Notes on its Life History AB - Members of the genus Trichodina are mostly found on fish, but have also been recorded from a variety of other aquatic organisms, including calanoid copepods. So far, it appears that all the trichodinid populations collected from calanoids in various parts of the world are the same species, i.e. Trichodina diaptomi Šrámek-Hušek, 1953. This paper reports on a new record of T. diaptomi from Metadiaptomus meridianus in a large reservoir in South Africa, as well as on a new host species, Metadiaptomus transvaalensis, and the first record of T. diaptomi from pools in an ephemeral river in northern Botswana, therefore adding a new country to the distribution of this species. We used the history of the discovery of T. diaptomi in different parts of the world and came to the conclusion that it is a cosmopolitan species, exclusively associated with copepods of the order Calanoida. Based on existing information, T. diaptomi does not appear to have a reservoir host. Against this background, we provide a discussion on the possibility that, although no dormant stage has been recorded for any trichodinid, it may be possible that T. diaptomi possesses some form of diapause and that this might be related to that of calanoid copepods. VL - 2016 IS - Volume 55, Issue 3 PY - 2016 SN - 0065-1583 C1 - 1689-0027 SP - 161 EP - 171 DO - 10.4467/16890027AP.16.016.5748 UR - https://ejournals.eu/en/journal/acta-protozoologica/article/trichodina-diaptomi-ciliophora-peritrichia-from-two-calanoid-copepods-from-botswana-and-south-africa-with-notes-on-its-life-history KW - ephemeral habitat KW - Metadiaptomus meridianus KW - Metadiaptomus transvaalensis KW - trichodinid KW - survival strategies