Abstract
Acipenser stellatusis the most euryhaline sturgeon in the Caspian Sea which is reputed to have the tastiest flesh and also the best caviar in Iran nbsp The main objective of the current study was to investigate the gill parasites of A stellatus in quot Rajaee Aquaculture Centre quot in northeast of Caspian Sea Basin Mazandaran Province A total of individuals were selected accidentally and examined for the parasites during the spring of Six adult female of Lernaea cyprinaceaL an ectoparasitic copepod species was detected on the gill filaments and archs Five out of specimens of the examined fish were infected with adult anchor worms containing egg sacs and A stellatus is presented as a new host for L cyprinacea in the present report The presence of this parasite on sturgeon fishes has not previously been reported in all over the world Also this is the first report of occurrence of adult female of L cyprinacea on the fish gills
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