Interaction of Vibrio spp. with the Inner Surface of the Digestive Tract of Penaeus monodon
Fig 2
Representative SEM pictures of the inner surface of the digestive tract of a suspected diseased Penaeus monodon from a shrimp farm.
A cluster of unique rod-shaped bacteria attached to (A) fibre setae or (B) to the lining of the stomach. (C) Higher magnification image of the attached bacteria in the stomach exhibiting peritrichous pili-like structures or fimbria., where (D) a few fibres linked to the peritrophic matrix (PM) can be seen (arrowhead). (E) Many holes were created in the PM and a few granules were seen inside the holes. (F) A group of irregular-shaped bacteria were found attached to the PM. (G) A cluster of short-rod shaped bacteria with polar flagella, (h) irregular-shaped, and (I) unidentified particles were seen attached to the hindgut wall. Abbreviation: fiber seta (FS), bacteria (Ba), spines (Sp), fimbria (Fi) granule (Gr), microvilli (Mv), polar flagella (PF), unknown particles (UP), ingested food (IF)