| spread of neoheterobothrium hirame (monogenea), a serious pest of olive flounder paralichthys olivaceus, to korea. | neoheterobothrium hirame is a large, blood-feeding gill-worm infecting the highly prized olive flounder paralichthys olivaceus in japan. there is strong evidence that this worm is the primary cause of anaemia, a common and serious condition causing losses among both wild and cultured olive flounders. n. hirame was first detected in japanese waters less than a decade ago, and its population then proliferated and spread throughout most of japan, except hokkaido. in neighbouring korea, olive flound ... | 2001 | 11558730 |
| impacts of diclidophorid monogenean infections on fisheries in japan. | many monogeneans are pathogenic to economically important fish in japan. however no other monogenean is comparable with the diclidophorids, heterobothrium okamotoi and neoheterobothrium hirame, on the scale of impacts they inflict on japanese fisheries. the shared importance of the two monogenean infections lies in their pathogenicity, fecundity and tolerance to chemical treatment. heterobothrium okamotoi infects the gills and wall of the branchial cavity of the tiger puffer, takifugu rubripes ( ... | 2002 | 11835977 |
| role of cellular response in elimination of the monogenean neoheterobothrium hirame in japanese flounder paralichthys olivaceus. | adult worms of the blood-feeding monogenean parasite neoheterobothrium hirame, which cause anemia in the japanese flounder paralichthys olivaceus, attach to the host fish by embedding their posterior part deeply into the host tissue. to investigate the possibility that cellular responses of the host fish can eliminate n. hirame, flounder were experimentally infected with n. hirame larvae and reared in either fed or starved conditions. mature parasites were identified on the buccal cavity wall of ... | 2005 | 15918475 |
| infection dynamics of neoheterobothrium hirame (monogenea) on juvenile olive flounder, paralichthys olivaceus (temminck & schlegel), in coastal waters of japan. | a recent epidemic of the invasive monogenean neoheterobothrium hirame is suspected to have caused the significant decline of the commercial catch of olive flounder, paralichthys olivaceus, in japan. to clarify the causal link between parasite invasion and host depletion, we monitored the infections of n. hirame on juvenile flounder for 2 years at two widely separate bays, obama bay, experiencing a devastating reduction in flounder catches, and miyako bay with a stable catch. prevalence, mean int ... | 2006 | 16768712 |
| microarray analyses of gene expression in japanese flounder paralichthys olivaceus leucocytes during monogenean parasite neoheterobothrium hirame infection. | in this study, the gene expression patterns of peripheral blood leucocytes (pbl) from japanese flounder paralichthys olivaceus were analyzed during the course of monogenean parasite neoheterobothrium hirame infection in order to select candidates for molecular biomarkers of infection. cdna microarray analysis was performed to compare the gene expression patterns of pbl between infected and non-infected fishes. among the 797 genes analyzed, 45 genes (5.6%) changed their expression levels. these g ... | 2007 | 17523546 |
| altered behaviour and reduced survival of juvenile olive flounder, paralichthys olivaceus, infected by an invasive monogenean, neoheterobothrium hirame. | neoheterobothriumhirame is a blood feeding monogenean of olive flounder paralichthys olivaceus. the parasite was first reported in the mid-1990s from the sea of japan and became epidemic within cultured and wild flounder populations after several years. infected fish often suffer from severe anaemia and thus the parasite is thought to have played an important role in the recent depletion of flounder populations in some areas of japan. however, the causal mechanism underlying the parasite epidemi ... | 2008 | 18561933 |
| rapid fluctuation in infection levels of neoheterobothrium hirame (monogenea) in japanese flounder paralichthys olivaceus in the joban area, japan. | neoheterobothrium hirame a haematophagous monogenean parasite on japanese flounder paralichthys olivaceus occurred at high prevalences (> 70%) from 1999 to 2002 but thereafter declined and remained low (< 20%) from 2003 to 2005 in the joban area, japan. in 2006, n. hirame became abundant again reaching a prevalence of 63%. generalized linear models explained these rapid fluctuations in infection in relation to inshore water temperature, which affected the reproductive success of the parasite, an ... | 2009 | 20738490 |