Walter, T.C. & Boxshall, G. (). World of Copepods database. Argulus japonicus Thiele, Accessed through: World Register of Marine. Native Range: Argulus japonicus is native to Asia where its common hosts, Goldfish (Carassius auratus) and Common carp (Cyprinus carpio), are also native. Native Range: Argulus japonicus is native to Asia where its common hosts, Goldfish (Carassius auratus) and Common carp (Cyprinus carpio).

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Argulus japonicus is a parasitic crustacean parasitizing the skin of warm water fishes. Fish lice Argulus spp; family Argulidae are branchiuran crustaceans that parasitize both marine and freshwater fishes.

It attaches itself to the gills, fins or skin of the host using its suckers, and then feeds by injecting a toxin into the host which pre-digests the tissue. There are currently no FDA-approved drugs for the treatment and control of Argulus.

After the lice had been removed, all goldfish in the affected system were monitored daily for evidence of adult Argulus ; 10 mo later, no more fish lice were noted.

In Japanese Ogawa, K.

Please review our privacy policy. The room into japonicuss the fish were received contained 2 self-contained, recirculating, aquatic rack systems, one to supply fish for research and the other to hold incoming fish. Aggulus and club cells are absent from any epidermis remaining in the crater but are abundant in the tissue at the margin of the crater.


Gross examination of the fish revealed that the shadow was a live organism resembling a fish louse.

Fish Lice (Argulus japonicus) in Goldfish (Carassius auratus).

Because our facility did not have a severe outbreak, and only a few fish were affected, we opted for the conservative approach of manual removal of lice without further medical intervention. Argulus japonicus in the Olifants River system: Support Center Support Center.

Argulus coregoni is a japonifus parasite to A. In other projects Wikimedia Commons Wikispecies. Due to their size, older stages of Argulus can be diagnosed with the naked eye and are visible moving on the host or swimming in the water. Branchlura on cod, Gadus morhuafrom Finnmark, northern Norway. Argulus fish louse infections in fish.

Fish Lice (Argulus japonicus) in Goldfish (Carassius auratus)

Argulus spp can be a major threat to fish health, because heavy infestations can cause significant morbidity and mortality. Although rarely diagnosed in laboratory animal facilities, Argulus spp are an important parasite in aquatic colonies and warrant additional study.


Arguluus K, Makioka T. J Crustacean Biol Goldfish heavily infected by A. Views Read Edit View history. Author information Article notes Copyright and License information Disclaimer.

Fish Lice (Argulus japonicus) in Goldfish (Carassius auratus).

One of the constraints of freshwater fish cultivation is ectoparasite infestation Argulus japonicus. To avoid a facility-wide Argulus infestation, screening and quarantine of incoming fish are very important and recommended. Other compounds with a similar mechanism of action as that of diflubenzuron, such as lufenuron 0.

In addition, the agulus are more pointed in A. Acknowledgments We thank Jamieson Greaver for taking the pictures and Kelly Garner for her contribution in creating the figures.

This organism was removed with forceps and placed in a beaker of tank water. These parasites were removed and placed in the beaker with the first specimen.

In addition, the parasite can be identified on wet mounts of affected tissue. The first record of Argulus foliacesus Crustacea: Infectious and parasitic diseases of fish and shellfish.