Abstract: The present invention relates to a composition for exterminating fish parasites comprising an extract of Juglans mandshurica bark as an active ingredient, making it possible to safely and effectively exterminate scuticociliates using an extract derived from a natural material, instead of formalin that is highly harmful, which has been conventionally used to treat scuticociliatosis in fish.

Abstract: The present disclosure relates to genetic markers for discrimination and detection of bacteria causing Edwardsiellosis and Streptococcosis in fish, and a method for discriminating and detecting the bacteria using the same. A genetic marker for discrimination and/or detection of each of Edwardsiella tarda, Streptococcus iniae, Streptococcus parauberis and Lactococcus garvieae, which cause fish diseases, is selected and a peptide nucleic acid and a primer pair, which are specific for the genetic marker, are used to amplify and obtain melting curves having different fluorescences depending on bacterial species. Thus, bacteria that cause fish diseases can be discriminated and whether or not fish would be infected with the bacteria can be detected in a simple, rapid and accurate manner.

Abstract: The present invention relates to a composition containing Ivermectin for exterminating Clavinema mariae infection on Sebastes schlegeli, and more specifically, to a composition for exterminating Clavinema mariae infection on Sebastes schlegeli, containing Ivermectin as an active ingredient, and a method for exterminating Clavinema mariae infection by orally administering Ivermectin to Sebastes schlegeli. The composition and the exterminating method according to the present invention are excellent in an effect of exterminating Clavinema mariae infection of Sebastes schlegeli, are safe without causing any side effects on the Sebastes schlegeli, and are able to achieve oral administration to thereby be useful in the aquaculture industry.

Abstract: A PNA probe for discrimination or detection of quinolone antibiotic-resistant bacteria and a method for discrimination or detection of quinolone antibiotic-resistant bacteria are described. The method may be carried out by selecting and amplifying a quinolone antibiotic-resistance genetic marker of Vibrio harveyi, Streptococcus parauberis or Edward tarda, hybridizing to the amplification product a PNA that specifically recognizes the amplification product, obtaining a temperature-dependent melting curve while controlling the temperature of the hybridized product, and analyzing the melting curve to determine a melting temperature, thereby discriminating or detecting quinolone antibiotic-resistant bacteria.

Abstract: The present invention relates to a composition containing Ivermectin for exterminating Clavinema mariae infection on Sebastes schlegeli, and more specifically, to a composition for exterminating Clavinema mariae infection on Sebastes schlegeli, containing Ivermectin as an active ingredient, and a method for exterminating Clavinema mariae infection by orally administering Ivermectin to Sebastes schlegeli. The composition and the exterminating method according to the present invention are excellent in an effect of exterminating Clavinema mariae infection of Sebastes schlegeli, are safe without causing any side effects on the Sebastes schlegeli, and are able to achieve oral administration to thereby be useful in the aquaculture industry.

Abstract: The present disclosure relates to genetic markers for discrimination and detection of bacteria causing Edwardsiellosis and Streptococcosis in fish, and a method for discriminating and detecting the bacteria using the same. A genetic marker for discrimination and/or detection of each of Edwardsiella tarda, Streptococcus iniae, Streptococcus parauberis and Lactococcus garvieae, which cause fish diseases, is selected and a peptide nucleic acid and a primer pair, which are specific for the genetic marker, are used to amplify and obtain melting curves having different fluorescences depending on bacterial species. Thus, bacteria that cause fish diseases can be discriminated and whether or not fish would be infected with the bacteria can be detected in a simple, rapid and accurate manner.

Abstract: The present disclosure relates to a composition for exterminating scuticociliates in fish, comprising Mebendazole as an active ingredient, and to a method for exterminating scuticociliates by performing oral administration or immersion administration of Mebendazole in fish. According to the present disclosure, the composition and the extermination method have excellent effects in exterminating scuticociliates in fish, and can be efficiently used in the aquaculture industry by performing oral administration or immersion administration.

Abstract: The present disclosure relates to a composition for exterminating scuticociliates in fish, comprising Mebendazole as an active ingredient, and to a method for exterminating scuticociliates by performing oral administration or immersion administration of Mebendazole in fish. According to the present disclosure, the composition and the extermination method have excellent effects in exterminating scuticociliates in fish, and can be efficiently used in the aquaculture industry by performing oral administration or immersion administration.

Abstract: An air-vent of a vehicle includes a front duct configured to change a discharging direction of an air stream horizontally and vertically, a rear duct connected to a rear side of the front duct and a damper hinged to an inside of the rear duct and selectively blocking the air stream, a rotatable knob coupled to a side of the front duct, formed with a hole at a side thereof, and driving the damper, and an angle-restricting device installed at a portion of the front duct, corresponding to the hole of the knob, the angle-restricting device elastically movable, and restricting a rotation angle of the knob.

Abstract: An air-vent of a vehicle includes a front duct configured to change a discharging direction of an air stream horizontally and vertically, a rear duct connected to a rear side of the front duct and a damper hinged to an inside of the rear duct and selectively blocking the air stream, a rotatable knob coupled to a side of the front duct, formed with a hole at a side thereof, and driving the damper, and an angle-restricting device installed at a portion of the front duct, corresponding to the hole of the knob, the angle-restricting device elastically movable, and restricting a rotation angle of the knob.