Colonization and dispersal patterns of the invasive American brine shrimp Artemia franciscana (Branchiopoda: Anostraca) in the Mediterranean region

摘要: Cysts of the brine shrimp Artemia franciscana are harvested from Great Salt Lake (GSL) and San Francisco Bay (SFB) saltworks in USA, marketed worldwide to provide live food for aquaculture. This species has become invasive across several countries. We investigated (1) if introduced populations Mediterranean region could have originated these USA populations, (2) how genetic diversity compares that at GSL SFB, (3) patterns can shed light on colonization routes. sequenced a fragment cytochrome c oxidase subunit I screened microsatellites loci two putative sources. Haplotypes were identical or closely related those SFB GSL, not other available American populations. Microsatellite analyses showed reduced population most suggesting bottleneck effects, but few showing similar higher than native ones, which likely be admixed both because multiple introductions. Results suggest natural dispersal, potentially via flamingos, between Spanish Our show all invaded commercialized