Long -Term Changes in the Fish Fauna of the Karkinitsky Gulf of the Black Sea

Белогурова, Р. Е.; Карпова, Е. П.; Ablyazov, E. R.

doi:10.1134/s1063074020060036

Cited by 4 publications

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“…In the region studied, the pipefishes and the seahorse occur in at least two marine protected areas, namely Crimean Nature Reserve ("Swan Islands" branch in Karkinit Gulf) and State Zoological Reserve "Kazachya Bay" in aquatoria of Sevastopol city. Moreover, all the studied Syngnathidae species are abundant there and are the basis part of the faunistic diversity in the western part of Karkinit Gulf (Belogurova et al, 2020). List of major threats protected marine fishes are affected in the Black Sea (Yankova et al, 2014) doesn't include fish diseases and helminthoses.…”

Section: Discussionmentioning

confidence: 99%

New data on pipefishes’ and seahorse’s endohelminths off Crimean coasts of the Black Sea

2022

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Summary A total of 357 Syngnathidae fishes (Syngnathus abaster Risso, 1827, S. typhle Linnaeus, 1758 and Hippocampus hippocampus (Linnaeus, 1758) caught in different habitats along Crimean Black Sea shelf were examined for presence of endohelminths and revealed to be hosts of 15 helminth species. The fishes are second intermediate hosts for five “birds’” digenean species and nematodes (larvae of three species and immature adults of one more species) completing life-cycles in waterbirds and fish; for two acanthocephalans and three cestodes larvae ending development in fish. We suggest, basing on data on feeding of the Black Sea predatory fish and waterbirds, that Syngnathid fishes are paratenic hosts in parasitic systems of most cestodes, nematodes and acanthocephalans. All the trematodes found are generalists at metacercarial stage; specialists Timoniella imbutiformis and Aphallus tubarium use Syngnathidae as definitive hosts. Cestodes, nematodes as well as acanthocephalans found are generalists, too. Based on infection indices, S. typhle are main final host and H. hippocampus are main 2nd intermediate hosts for T. imbutiformis; Syngnathids are accidental hosts for other trematodes as well as for all the cestodes, nematodes and acanthocephalans. Cryptocotyle concava and Pygidiopsis genata are important as Syngnathid fishes’ threats, especially in marine protected aquatoria, being potential agents of “black spot disease”.

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Section: Discussionmentioning

confidence: 99%