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Програма на научната конференция - Министерство на ...

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В тях са установени 17 вида хелминти: трематоди – 9, моногенеи – 5,нематоди – 2 и един вид акантоцефал. Повечето от тези видове паразити (13)са общи за вида-<strong>на</strong>шественик и местните видове кефали. ЕдинственоLigophorus kaohsianghsieni се среща в двата ареала <strong>на</strong> Liza haematocheila и нее установен по други видове гостоприемници в Черно море. ВидоветеLigophorus pilengas, L. llewellyni и Saturnius sp. са описани от Lizahaematocheila единствено от Черноморския басейн и до този момент не сасъобщавани за естествения ареал <strong>на</strong> вида. Големият брой <strong>на</strong> общи хелминтнивидове между вида-<strong>на</strong>шественик и местните симпатрични видове кефалипоказва, че паразитофау<strong>на</strong>та <strong>на</strong> вида-<strong>на</strong>шественик е формира<strong>на</strong> основно чрезвключването му в цикъла <strong>на</strong> развитие <strong>на</strong> хелминтите, паразитиращи помесните видове кефалови риби.HELMINTHS FROM TRANSLOCATED LIZA HAEMATOCHEILA(TEMMINCK &SCHLEGEL) (TELEOSTEI: MUGILIDAE) FROMBULGARIAN BLACK SEA COASTP. PankovCentral Laboratory of General Ecology, Bulgarian Academy of Sciences,2 Gagarin Street, Sofia 1113, BulgariaLiza haematocheila (=Mugil soiuy) has been transferred from Japanese Sea to theBlack Sea basin in the 1970s – 1980s for the purposes of marine aquaculture. Thecurrent wide distribution of this translocated species is an opportunity to examinethe formation of the parasite fauna of a host colonising a new geographical range.In the present study, 96 specimens of L. haematocheila were studied from variouslocalities of the Bulgarian Black Sea coast. Totally, 17 helminth species wererecorded: trematodes – 9, monogeneans – 5, nematodes – 2 and acanthocephalans –1. Most of these species (13) are common for the invasive host and for nativemullet species. Ligophorus kaohsianghsieni is the only parasite species occurringin both native and invasive geographical ranges of Liza haematocheila; it has notbeen recorded in native mullets in the Black Sea. Three species (Ligophoruspilengas, L. llewellyni and Saturnius sp.) have been described only from Lizahaematocheila in the Black Sea; however, they have not been recorded from thenative range of this host. The great number of common helminth speciesparasitising the translocated mullet and the sympatric native mugilids in the BlackSea indicates that the parasite fauna of the invasive host is formed mostly by itsparticipation as definitive host in the life cycles of parasites occurring in the localrelated host species.12:30-14:00Обед<strong>на</strong> почивкаLunch Break62

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