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Fish parasite extermination agent and extermination method

A technology of parasites and repellants, applied in the field of parasite repellants

Active Publication Date: 2013-04-10
NIPPON SUISAN KAISHA LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In non-patent literature 1, it is recorded that hydroxychlorosalicylanilide has an anthelmintic effect on protozoan ciliates (スクーチカ) (Phiasterides dicentrarchi) parasitic on fish, but only with hydroxychloride water dissolved The content of the results obtained by culturing the seawater of phosphoanilide is not actually the effect obtained by observing the protozoa that parasitizes the fish.

Method used

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  • Fish parasite extermination agent and extermination method
  • Fish parasite extermination agent and extermination method
  • Fish parasite extermination agent and extermination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052]

[0053] experiment method:

[0054] Amberjack 30 tails with an average fish weight of about 150 g were reared in a 500-liter tank for about 7 days, and they were domesticated at a water temperature of 25°C. During the feeding, commercially available feed was given, and the feeding rate was set to 3% of the fish's body weight. The water injection is set at 4.8 liters / minute. The exposure of the parasite to the fish was performed twice at the beginning of the test (the first exposure) and on the fourth day (the second exposure). The exposure of this parasite was carried out as follows: About 6000 hatchling larvae of Neobenedenia leucocephalus were put into a 500-liter water tank and set in static water for 1 hour. After the parasite was exposed on the fourth day of the test, 10 each were housed in 3 200-liter water tanks. The water injection during the rearing period was 2.4 L / min. Commercially available feed was fed for 6 days from the start of the experiment, and the ...

Embodiment 2

[0067]

[0068] experiment method:

[0069] Amberjack 73 tails with an average fish weight of about 210 g were reared in a 500-liter tank for about 7 days, and they were domesticated at a water temperature of 25°C. During the feeding, commercially available feed was given, and the feeding rate was set to 3% of the fish's body weight. Water injection is 4.8 liters / min. The exposure of the parasite to fish was performed twice at the beginning of the experiment (the first exposure) and on the fourth day (the second exposure). The exposure of this parasite was carried out as follows: About 14,000 hatchling larvae of Neobenedenia leucocephalus were put into a 500-liter water tank and set to stand still water for 1 hour. After the exposure of the worm on the 4th day of the test, 10 each were housed in 7 200-liter water tanks. In addition, in order to investigate the parasite body length at the start of drug administration, the remaining 3 tails were housed in a 200-liter water tank....

Embodiment 3

[0083]

[0084] experiment method:

[0085] Amberjack 37 tails with an average fish weight of about 328 g were reared in a 500-liter tank for about 7 days, and they were acclimatized at a water temperature of 25°C. During the feeding, commercially available feed was given, and the feeding rate was set to 2% of the fish's body weight. Water injection is 4.8 liters / min. Exposure of this parasite to fish was performed at the beginning of the experiment. The exposure of this parasite was carried out as follows: about 7,400 hatchling larvae of Neobenedenia leucocephalus were put into a 500-liter water tank and set to stand still water for 1 hour. After the insects were exposed, each 5 tails were housed in 7 200-liter water tanks. In addition, in order to investigate the body length of the parasite at the start of drug administration, the remaining 2 tails were kept in a 500-liter water tank and reared. The water injection during the rearing period was 2.4 L / min. Commercially avai...

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Abstract

Provided is a method for exterminating parasites in fish in which a salicylanilide drug is administered to fish. The method for exterminating parasites is effective against parasites belonging to the class Monogenea or the class Trematoda. Oxyclozanide, rafoxanide, and closantel are preferred as the salicylanilide drug. The extermination agent is effective in fish belonging to the order Perciformes, the order Pleuronectiformes, the order Clupeiformes, the order Tetraodontiformes, the order Cypriniformes, the order Anguilliformes, and the order Siluriformes.

Description

Technical field [0001] The present invention relates to a repellent for parasites of fish (especially farmed fish) and a method for repelling parasites. Specifically, it relates to the removal of the parasites of monogenea (monogenea) and trematoda called Benedenia (Haダムシ, skin parasites), monogenetic trematodes (Gill parasites) and trematoda through oral administration Medicament and extermination method. Background technique [0002] In fish farming, parasites hinder stable production and cause very serious problems. Among the parasitic diseases, in particular, the infections of monogenes belonging to the Monogenea subclass of Platyzoa and trematodes belonging to the Class of Platychosanthes are infections that occur in many farmed fish and cause one of the biggest problems. Monogenes called Benedenia and monogenes called monogenes generally exist in monogenes. Known: The parasite called Benedenia is the new Benedenia of Capsalidae (Capsalidae). Neobenedenia girellae ), Ben...

Claims

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Application Information

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IPC IPC(8): A61K31/609A01K61/00A61P33/10
CPCA61K31/609A61P33/10Y02A50/30
Inventor 平泽德高河野文美川上和夫长谷川贤胜间田直美
Owner NIPPON SUISAN KAISHA LTD
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