[On the chitin digestive bacteria from larval gut of Eriocheir sinensis].

The foregut, mid-gut and hind gut of Eriocheir sinensis from the first Zoea to Megalopa were dissected under asepsis condition. Bacteria were separated by plate culture after liquid medium culture. A chitin digestive bacterium was separated from the first Zoea foregut. The chitin digestive bacteria weren't founded in the same experiment from the second Zoea to Megalopa. The chitin digestive bacteria showed roundness, protuberance, glassy humid, margin regular, milk-yellow, aerotolerant anaerobe, and growing intently surrounding the chitin on the plate culture medium. The chitin could promote the growth rate of some digestive bacteria in larval gut of the crab.