| 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 |
| [swimming behaviour and gravitational response of larva heterobothrium okamotoi]. | | 2001 | 11997662 |
| lectins homologous to those of monocotyledonous plants in the skin mucus and intestine of pufferfish, fugu rubripes. | we have characterized pufflectin, a novel mannose-specific lectin, from the skin mucus of the pufferfish, fugu rubripes. molecular mass estimations by gel filtration and matrix-assisted laser desorption ionization time-of-flight mass spectrometry and the sds-page pattern suggest that pufflectin is a homodimer composed of non-covalently associated subunits of 13 kda. the full-length pufflectin cdna consists of 527 bp, with 116 amino acid residues deduced from the open reading frame. the amino aci ... | 2003 | 12654913 |
| mucus ph of the tiger puffer takifugu rubripes is an important factor for host identification by the monogenean heterobothrium okamotoi. | we examined a host-finding factor of the monogenean heterobothrium okamotoi oncomiracidia to develop an alternative prophylaxis. h. okamotoi oncomiracidia attached preferentially to gill filaments and skin mucus from the tiger puffer takifugu rubripes compared with corresponding material from other tested fishes (amber jack seriola dumerili, red sea bream pagrus major, japanese flounder paralichthys olivaceus and spotted halibut verasper variegatus). the body mucus ph of the tiger puffer was 6.4 ... | 2003 | 12964825 |
| molecular diversity of skin mucus lectins in fish. | among lectins in the skin mucus of fish, primary structures of four different types of lectin have been determined. congerin from the conger eel conger myriaster and ajl-1 from the japanese eel anguilla japonica were identified as galectin, characterized by its specific binding to beta-galactoside. eel has additionally a unique lectin, ajl-2, which has a highly conserved sequence of c-type lectins but displays ca(2+)-independent activity. this is rational because the lectin exerts its function o ... | 2003 | 14662297 |
| involvement of host recognition by oncomiracidia and post-larval survivability in the host specificity of heterobothrium okamotoi (monogenea: diclidophoridae). | heterobothrium okamotoi, a monogenean gill parasite, shows high host specificity for tiger puffer, takifugu rubripes. in the present study, in vivo and in vitro experimental infections were conducted using various fish species, including t. rubripes, to understand the mechanisms of specificity. in in vivo experiments, t. rubripes, grass puffer, takifugu niphobles, olive flounder, paralichthys olivaceus, and red sea bream, pagrus major, were exposed to oncomiracidia of h. okamotoi labelled with a ... | 2007 | 17055510 |
| immobilization antibodies of tiger puffer takifugu rubripes induced by i.p. injection against monogenean heterobothrium okamotoi oncomiracidia do not prevent the infection. | we examined whether infection by the monogenean heterobothrium okamotoi induces production of specific antibodies against oncomiracidia and their cilia, larvae on the gills, and adults on the branchial cavity wall of tiger puffer takifugu rubripes. we also investigated whether specific antibody production participates in acquired protection against h. okamotoi. sera from persistently infected fish immobilized h. okamotoi oncomiracidia 89 days after exposure and antibody levels (measured by enzym ... | 2007 | 17234044 |
| novel mannose-specific lectins found in torafugu, takifugu rubripes: a review. | in earlier work, we identified a novel mannose-specific lectin, termed pufflectin-s, from the skin mucus of torafugu, takifugu rubripes. we here make a brief review on the lectin. the amino acid sequence of pufflectin-s shares sequence homology with mannose-binding lectins of monocotyledonous plants, and has conserved two of three carbohydrate recognition domains, qdnvy motifs, of these plant lectins. by site-directed mutagenesis, we verified that the qdnvy motif in the n-terminal region was cri ... | 2006 | 20483241 |
| a new species of the genus heterobothrium (monogenea: diclidophoridae) parasitizing the gills of tiger puffer fish tetraodon lineatus (tetraodontidae). a light and scanning electron microscopic study. | in the present study, the morphology and morphometric characterization of heterobothrium lineatus, a monogenean gill parasite infecting the gills and wall of the bronchial cavity of the tiger pufferfish tetraodon lineatus, were described by means of light and scanning electron microscopy for the first time from the river nile at qena governorate, south valley, egypt. in wet mount preparation, the adult worms exhibited an elongated body with anterior pointed and posterior broad ends. the adult wo ... | 2011 | 21853225 |
| identification and characterization of pufflectin from the grass pufferfish takifugu niphobles and comparison of its expression with that of takifugu rubripes. | pufflectin found in takifugu rubripes (tr pufflectin) is the first animal lectin reported to show sequence similarity to monocotyledonous plant lectins. in the present study, we identified and characterized an orthologous lectin from takifugu niphobles (tn pufflectin), a species closely related to t. rubripes. tn pufflectin exhibits 86% identity to tr pufflectin with two conserved mannose-binding domains. tn pufflectin was mainly expressed in the skin, gills, brain, and muscles; however, it was ... | 2016 | 26777033 |
| genomic regions of pufferfishes responsible for host specificity of a monogenean parasite, heterobothrium okamotoi. | the genetic mechanisms underlying host specificity of parasitic infections are largely unknown. after hatching, the larvae of the monogenean parasite, heterobothrium okamotoi, attach to the gill filaments of hosts and the post-larval worms develop there by consuming nutrients from the host. the susceptibility to h. okamotoi infection differs markedly among fish species. while this parasite can grow on tiger pufferfish (also called fugu), takifugu rubripes, it appears to be rejected by a close co ... | 2013 | 23872522 |