Atkinsiella hamanaensis sp. nov. isolated from cultivated ova of the mangrove crab,Scylla serrata (Forsskål)*

Abstract. Atkinsiella hamanaensis sp. nov. a marine mastigomycete isolated from ova of the mangrove crab, Scylla serrata (Forsskål), is described and illustrated. The fungus grew over a temperature range of 15–32°C, with an optimum of 29–32°C. Its growth was observed in peptone-yeast extract glucose broth containing 1–5% NaCl, with optimum growth at 2–3% NaCl concentration. At 6% or more NaCl concentration, growth was inhibited. Its pH tolerance ranged from 4 to 9.