The Indo-Pacific egg-carrying copepod Pseudodiaptomus marinus Sato, 1913 was recorded for the first time in the Port of Koper, Slovenia (Gulf of Trieste) in February 2015. This is the fourth
finding of this species in the Mediterranean Sea, and the third for the Adriatic Sea. A rather high abundance of 73 ind. m-3 was recorded, which is considerably higher than previous findings in the Adriatic. Maritime transport is presumed to be the main cause of its introduction, primarily through ballast water release. Repeat sampling in May confirmed the presence of this copepod, indicating
the possibility that the species has established a stable population in the Port of Koper.Indo-pacifička vrsta veslonošca Pseudodiaptomus marinus je po prvi put zabilježena u veljači 2015. godine u luci Kopar, Slovenija. Ovo je četvrti nalaz ove vrste u Sredozemnom moru, od kojih su tri u Jadranskom moru. Utvrđene su visoke vrijednosti od 73 ind. m-3, znatno više od prije zabilježenih za Jadran. Smatramo da je morski transport glavni uzrok unosa ovog veslonošca, prvenstveno putem balastnih voda. Ponovljenim uzorkovanjem u svibnju na istoj postaju potvrđeno je
njegova stalna prisutnost što ukazuje na mogućnost uspostavljanja stabilne populacije u luci Kopa
