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Oceanological Studies
|
2002
|
vol. 31
|
issue 1-2
51-57
EN
Parasites of the round goby in the North-Western Black Sea region and the Gulf of Gdask have been investigated. Only Acanthocephalus lucii that infect the round goby from the Black Sea were found in one specimen from the Baltic Sea. A lot of the round gobys parasites are fresh water species (Diplostomum spp., A. lucii, Ergasilus sieboldi). The round gobys parasites which are most widespread in the Black Sea (Cryptocotyle spp., Dichelyne minutus) do not infect the goby in the Baltic Sea but are present for other fishes (Gobius niger, Platichthyes flesus). It is possible that the Baltic population of the round goby have a fresh water origin, because independently of the fact that marine parasites, Cryptocotyle concavum and D. minutus, inhabit the Gulf they do not infect the round goby.
EN
A list is presented of metazoan parasites that infect seven gobiid fishes (the toad goby Mesogobius batrachocephalus, monkey goby Neogobius fluviatilis, racer goby N. gymnotrachelus, bighead goby N. kessleri, round goby N. melanostomus, ratan goby N. ratan, and syrman goby N. syrman) from the Dniester Estuary (Black Sea). Infections by thirteen species of metazoa parasites, including four trematodes, three cestodes, five nematodes, and one crustacean species, were observed in the gobies sampled from the estuary. The data complements the existing list of parasite species that inhabit the fishes of this aquatic basin. Water salinity varies in the estuary, which impacts parasite distribution. Brackish-water parasites prevailed in the Dniester Estuary, while the marine trematode C. lingua occurred only in the southern part.
Oceanological Studies
|
2002
|
vol. 31
|
issue 1-2
59-65
EN
The aim of the present work was to investigate the helminth fauna of commercially caught gobiid fishes (Zosterisessor ophiocephalus, Neogobius melanostomus, N. fluviatilis, N. syrman) of the Budaksky Lagoon. The studied fish harbored nine parasite species that include three Holarctic species, one Euro-Siberian, one Cosmopolitan species, one Boreo-Atlantic species, one Mediterranean species, and two Ponto-Caspian ones. The most widespread species were: Cryptocotyle lingua, C. convacum, Acanthocephaloides propinquus. Two Ponto-Caspian cestod species: Proteocephalus gobiorum, Ligula pavlovskii are specific for gobiids. Possible reasons of the infection variability were discussed. Eight species of helminths have been recorded for the first time in the Lagoon.
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