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Table 2 Similarity of bacterial shapes detected in cnidarian tentacles and in cerata of nudibranch predators

From: Endobacterial morphotypes in nudibranch cerata tips: a SEM analysis

Predators and hosts Nudibranchia hosting bacteria Cnidaria hosting bacteria
Aggregates and bacterial morphology
Coccoid shapes
(smooth surface, Ø ca. 1.2 μm)
Aeolidia papillosa
Berghia caerulescens
Coryphella brownii
Facelina coronata
Flabellina pedata
Janolus cristatus
Sagartia elegans
65 Coccoid shapes
(rough surface, Ø ca. 1.0 μm)
Berghia caerulescens Tubularia indivisa
Oval shapes
(Ø ca. 0.7 × 1.7 μm)
Berghia caerulescens
Coryphella lineata
Janolus cristatus
Tubularia indivisa
  1. Aggregates inside cnidarian tentacles are usually larger than those found in nudibranch cerata