Orchitophrya stellarum
WebOrchitopbrya cf. stellarum is reported to cause castration and mortality in Japan (Byrne et al. 1997, cited in Goggin & Bouland 1997), and in Pisaster ochraceus in Canada (Leighton et al. 1991, cited in Goggin & Bouland 1997) [Parasites] [Tokyo Bay, Japan] Orchitophrya cf. stellarum infects testes and reduces testicular output (Bates et al ... 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).
Orchitophrya stellarum
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WebThe parasitic ciliate Orchitophrya stellarum is known to infect testes of males and castrate them (Cepede, 1907;Peters, 1992;Lawrence, 2013) in a range of species (Vevers, 1951;Leighton et al.,...
WebOct 1, 2013 · A simple Polymerase Chain Reaction (PCR-RFLP) assay was developed to detect and differentiate between O. stellarum and M. chesapeakensis. Its application … Orchitophrya stellarum is a species of single-celled marine ciliates, a member of the class Oligohymenophorea. It is found living freely in the north Atlantic and Pacific Oceans but is also parasitic, being found inside the gonads of starfish. See more Orchitophrya stellarum tolerates a sea temperature range of between 3 °C (37 °F) and 27 °C (81 °F) and a salinity range of between 2 and at least 30 parts per thousand of salt equivalent. The lower the temperature, the … See more • Miller, Terrence L.; Small, Hamish J.; Peemoeller, Bhae-Jin; Gibbs, David A.; Shields, Jeffrey D. (November 2013). "Experimental … See more Orchitophrya stellarum is often associated with sea stars and other invertebrates, living on their outer surface and feeding on sloughed-off epidermal tissue. It only appears to become … See more The north Pacific sea star, Asterias amurensis, was first seen in Tasmania in 1986 and is spreading along the coasts of southern Australia. It is considered an invasive species that is threatening local biodiversity. Biological pest control of the starfish is being … See more
WebAug 27, 2008 · Orchitophrya stellarum is a holotrich ciliate that facultatively parasitizes and castrates male asteriid sea stars. We discovered a morphologically similar ciliate in testes … WebOrthetrum serapia, the green skimmer, is a freshwater dragonfly in the family Libellulidae. The serapia species is present in Australia, the Philippines, Fiji, Papua New Guinea and …
WebParasitic castration: the evolution and ecology of body snatchers Kevin D. Lafferty1 and Armand M. Kuris2 1US Geological Survey Western Ecological Research Center, c/o Marine Science Institute, University of California, Santa Barbara, CA 93106, USA 2Department of Ecology, Evolution, and Marine Biology and Marine Science Institute, University of California,
WebOrchitophxya stellarum; Asterias forbesi from the northwest Atlantic has been found to recover from the infection within 10 to 15 d in the laboratory (Bang 1982). The external … daly city signWebApr 23, 2024 · Similarly, melanin deposits were not associated with the presence of the pathogenic ciliate, Mesanophrys chesapeakensis, later identified as Orchitophrya stellarum (Small et al. 2013 ), in the gills of the crab, Callinectes sapidus, even though nodules were present in the gill hemolymph (Messick and Small 1996 ). daly city simonmedWebSep 3, 2024 · The ciliate was isolated and cultured in vitro, and molecular and morphological studies were done. The results showed that SSU rDNA and LSU rDNA sequences of the ciliate were similar to Mesanophrys ciliates (>96.81%), while ITS1-5.8s-ITS2 sequence was similar to Mesanophrys pugettensis (95.37%) and identical to Orchitophrya stellarum … daly city sfWebOrchitophrya stellarum causes complete atrophy of the testes leading to castration. The occurrence of the parasite is strictly seasonal and is only found between January and May when the hosts' testes are ripening or ripe. All that remains after the parasitic infection are the thick shrunken sheaths of the original testis tubules (Vevers, 1951). daly city sheriff departmentWebSep 3, 2024 · The ciliate was isolated and cultured in vitro, and molecular and morphological studies were done. The results showed that SSU rDNA and LSU rDNA sequences of the ciliate were similar to Mesanophrys ciliates (>96.81%), while ITS1-5.8s-ITS2 sequence was similar to Mesanophrys pugettensis (95.37%) and identical to Orchitophrya stellarum … bird friendly glass costWebPopulations 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 … daly city sister citiesWebApr 12, 2024 · Growing and Care Guide. Common Names: Star-of-Bethlehem, Chincherinchee, Snake Flower, Prussian Asparagus, Orange Star Flower. Life Cycle: Hardy … bird friendly glass