Publikationsdatum:
2018-03-12
Beschreibung:
This is a first comparative phylogenetic analysis of cultured endobacteria, discovered in tentacles of
cnidarian species (Tubularia indivisa, Tubularia larynx, Corymorpha nutans, Sagartia elegans) and
cerata material of selected nudibranch species (Berghia caerulescens, Coryphella lineata, Coryphella
gracilis, Janolus cristatus, Polycera faeroensis, Polycera quadrilineata, Doto coronata, Dendronotus
frondosus). Shared pathogenic activities were found among other microorganisms in
Pseudoalteromonas tetraodonis group (TTX), and Vibrio splendidus group (haemolytic, septicaemic,
necrotic activity). Specific autochthonous nudibranch endobacteria of extremely low similarity to their
next neighbours (e.g. Pseudoalteromonas luteoviolacea (95%), Orientia tsutsugamushi (84%),
Gracilimonas tropica (96%), Balneola alkaliphia (95%), Loktanella rosea (97%)) were detected in
nudibranch cerata. SEM micrographs provide insight into endobacterial aggregates in cnidarian
tentacles and nudibranch cerata. Since certain nudibranch predators prey on cnidarian species it is
assumed that cnidarian tentacle bacteria were directly transferred to nudibranch cerata. The
pathogenic endobacteria may serve as chemical defence to nudibranch and cnidarian species
investigated.
Repository-Name:
EPIC Alfred Wegener Institut
Materialart:
Article
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isiRev
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