Table 2.

Summary showing the main effects of treatments and associated potentially pathogenic bacteria (Vibrio carchariae, Lactobacillus sp., Roseovarius crassostreae and a Bacillus sp.) and histophagous ciliates (Philaster lucinda and Varistrombidium sp.) identified within the study.

	ND	WBD	amp	gent	met	para
progressive lesion	−	+	−	+	+	−
tissue necrosis	−	+	−	+	−	−
apoptosis	−	+	−	+	−	−
tissue fragmentation	−	−	−	−	+	−
Vibrio carchariae	−	+	−	+	+	−
Lactobacillus sp.	−	+	−	+	+	−
Roseovarius crassostreae	−	+	+	+	+	−
Bacillus sp.	−	+	−	+	+	−
Philaster lucinda	−	+	−	+	−	−
Varistrombidium sp.	−	+	+	+	−	−
in vitro effect on ciliates	NA	NA	−	−	+	+