Boreskov

PP‐66BIOSTRUCTURE OF ASSEMBLAGES OF FILAMENTOUS FUNGI ASSOCIATEDWITH BIVALVES IN THE RUSSIAN WATERS OF THE SEA OF JAPANZvereva L.V., Borzykh O.G.A.V. Zhirmunsky Institute of Marine Biology, Far East Branch,Russian Academy of Sciences, Vladivostok 690041, Russiae‐mail: zvereva_lv@mail.ruFilamentous fungi associated with bivalve mollusks Mytilus trossulus, Mizuhopectenyessoensis, Crenomytilus grayanus, Modiolus modiolus, and others have been investigated.About 700 strains of filamentous fungi have been isolated, 55 species have been identified,including 7 ascomycetes, 43 anamorphous fungi and 5 zygomycetes (Zvereva, Vysotskaya,2005; Zvereva, Borzykh, 2010). Fungi were found in mollusks internal organs: mantle, gills,kidneys, digestive gland, male and female gonads. The patterns of filamentous fungidistribution on the shell surface and in the internal organs of mollusks were found.Diversity of mycobiota from Mytilus trossulus and Mizuhopecten yessoensis bivalves hasbeen studied in natural populations and in mariculture (Zvereva, Vysotskaya, 2007).Taxonomic composition of filamentous fungi, associated with Mytilus trossulus bivalve,has been established. Sixteen filamentous fungi species have been isolated from mollusks ofnatural population in Vostok Bay, including 14 anamorphic micromycete species fromPenicillium (7 species), Cladosporium (3), Aspergillus (3), Trichoderma (1) genera, 1ascomycete from Chaetomium genus, and 1 Zygomycete from Rhizopus genus. Fifteenfilamentous fungi species have been isolated from mollusks farmed in suspended culture inVostok Bay, including 12 anamorphic fungi from Penicillium (5 species), Cladosporium (3),Aspergillus (3), Trichoderma (1) genera, 1 ascomycete from Chaetomium genus, and 2Zygomycetes from Rhizopus and Mucor genera. Comparative analysis of biodiversity offilamentous fungi, associated with Mytilus trossulus from natural population and mariculture(Vostok Bay), using coefficient of likeness (or difference) of Serensen, has not revealedevident differences.Taxonomic composition of mycelial fungi, associated with Myzuhopecten yessoensisbivalve, has been established. Eighteen filamentous fungi species have been isolated frommollusks of natural population in Vostok Bay, including 17 anamorphic micromycete speciesfrom Penicillium (5 species), Cladosporium (5), Aspergillus (3), Trichoderma (1), Alternaria(2), Aureobasidium (1) genera, and 1 zygomycete from Rhizopus genus. Fifteen filamentousfungi species have been isolated from mollusks farmed in suspended culture in Possyet Bay,including 14 anamorphic fungi from Penicillium (5 species), Cladosporium (2), Aspergillus (2),Trichoderma (1), Alternaria (2), Acremonium (1) genera, and 1 ascomycete from251