WebOrchitophrya stellarumphagocytizes spermatozoa in 7 species of asteriid sea stars from the North Atlantic and Pacific oceans. Earlier reports of O. stellarumas a parasite of sea stars … WebJun 14, 2004 · The disease was firstly documented in Eastern Canada as a pathogen of captive lobsters held in flow-through systems (Aiken et al., 1973) at low temperatures; it has since caused epizootics in eastern North America and is now considered one of the three most important infectious diseases of American lobsters (Bower et al., 1990).

Sea star wasting disease - Wikipedia

WebThe parasite, Orchitophrya stellarum, has been identified as a scuticociliate who phagocytizes germ cells. Despite numerous reports of the occurrence of O. stellarum … WebMay 11, 2009 · The parasitic astomatous holotrich ciliate, Orchitophrya stellarumCépède, has been found in the testes of starfishes (Asterias rubens) in the Plymouth area. It was found only in starfishes from numerically rich and well-fed populations, which also showed large gonad growth. how do you find holes in a rational function

Experimental infections of Orchitophrya stellarum …

WebPopulations of Asterias rubens have been found to be infected with the ciliate Orchitophrya stellarum. This parasite infects only male sea stars causing a variety of damage, including … WebNov 1, 1997 · Orchitophrya cf. stellarum, direct from testes of A. amurensis (35.2-67.2 pm; mean = 51.8 um; n = 60), was a similar length to ciliates reported from A. rubens (35-65 um) (Cepede, 1910; Claereboudt & Bouland, 1994). Ciliates isolated direct from testes were seen in fission and conjugation. WebABSTRACT: Orchitophrya stellarumis a holotrich ciliate that facultatively parasitizes and castrates male asteriid sea stars. We discovered a morphologically similar ciliate in testes of an asterinid sea star, the northeastern Pacific bat star Patiria miniata(Brandt, 1835). phoenix new york library