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Heterotrophic bacteria attached to seaweeds

1980; Elsevier BV; Volume: 47; Issue: 3 Linguagem: Inglês

10.1016/0022-0981(80)90042-8

1879-1697

Tsuneo Shiba, Nobuo Taga,

Marine Biology and Ecology Research

Viable counts of heterotrophic bacteria attached to the green algae, Monostroma nitidum Wittrock and Enteromorpha linza (Linné) J. Agardh, ranged from 104 to 106/cm2, and those attached to the red alga Porphyra suborbiculata Kjellman from 103 to 104/cm2. These bacterial populations were larger than those attached to the brown alga Eisenia bicyclis (Kjellman) setchell ranging from 101 to 104/cm2. The bacterial populations in the environmental sea water. Nabem Inlet and Otsuchi Bay (Japan), were 103/ml. Orange and yellow pigmented bacteria were predominant on the green and red algae, but not in the bacterial populations of the brown alga and the sea water. Most of the pigmented bacteria were identified as belonging to the Flavobacterium-Cytophaga group. A beneficial relationship was suggested between the green algae and the pigmented bacteria. Proportions of Vibrionaceae were small on the green algae.