Argulus americanus (Crustacea: Branchiura) Parasitic on the Bowfin, Amia calva, Imported from North America

Abstract

Argulus americanus WILSON 1902 was found on the bowfin, Amia calva, imported from Wisconsin, U. S. A. Eggs laid in a plastic container hatched in 35-37 days at 15°-16°C. Hatched larvae were experimentally infected to a cichlid, Tilapia mossambica. The larvae kept at 23°-26°C grew from 0.6-0.7 mm in total length on Day 0, to 2.5-3.5 mm on Day 20, to 4.5-5.8 mm on Day 40, and a single female larva grew to 6.9 mm on Day 70. Females laid eggs on Day 49 and Day 53. Male specimens on Day 7 and Day 26 are illustrated.