The Prevalence of Two Known Pathogens of Atlantic Blue Crab Callinectes sapidus (Rathbun, 1896) in Coastal Adriatic, Aegean Sea, and Atlantic Iberian Coast

International collaboration testing whether the rapidly expanding Mediterranean population of invasive blue crab carries the pathogens endemic to its native North American range; CsRV1 was absent throughout, while Hematodinium sp. was widespread outside the Aegean. Sequence analysis placed those strains with European and Mediterranean lineages rather than American ones, indicating local acquisition rather than co-invasion.