, Volume 17, Issue 2, pp 137-141

Unusual bloom of star-like prosthecate bacteria and filaments as a consequence of grazing pressure

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Abstract

In seawater used for shrimp aquaculture in French Polynesia, the grazing of small bacteria (rods and coccoids) allowed the growth ofAncalomicrobium cells (to more than 2×106 cells ml−1) and large filaments > 10μm in length (5×106 cells ml−1). Their contribution to the increase in total bacterial number after grazing was 27.8 and 9.8%, respectively. These large bacteria are not grazed on by microflagellates, but are available for mesoplankton larvae.