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Argulus spp. (Branchiura)

Collected: Just north of St. Augustine, FL where it was found in the water along with fish caught in a beach seine.15/03

Notes: Argulus spp., or "fish lice", were formerly included with parasitic copopods but are now in the separate group, Brachura. Argulus are external parasites on a variety of fishes, but are also common swinnimg in the plankton as they search for hosts or mates. They attach using large ventral suckers. (Note: Parasitic copepods (caligoids) and various parasitic isopods are also called "fish lice".)

Click here for an enlargement of the anterior end showing suckers.

Click here for a ventral view of the whole Argulus.

Collected by: Maia McGuire, Sea Grant Extension Agent, St. Augustine, FL.

Photographed by: Maia McGuire using a Digital Blue USB microscope.
Identified by: Dennis Allen, Baruch Marine Lab., University of South Carolina

 

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