About the Data
Species records include data on invasions history, distribution, ecology, impact, and more. These data were gathered from published literature and targeted surveys. All records have undergone expert review, unless otherwise noted.
Species Profiles
NEMESIS includes detailed information on about 500 species of marine and estuarine of invertebrates and algae introduced to the United States. Each record contains information on taxonomy, distribution, ecology, and impacts, as well as references.
Daily Invader
Argulus japonicus
Argulus japonicus is a fish lice species that was described from Japan in 1900, as a parasite of Goldfish (Carassius auratus). Since then, it has been reported from a number of locations around the globe, including: Britain, South Africa, Sri Lanka, Israel, New Zealand and North America. Its definitive native range is unknown and it was likely widely dispersed prior to being described. It is primarily restricted to freshwaters, but was reported from tidal waters in Chesapeake Bay, Virginia in 1933. Fish-lice are ectoparasites, which after a non-feeding nauplius stage, attach temporarily to a host and feed on its blood and mucus.
Daily Invader for 2024-05-12