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Coral Reefs

pp 1–6 | Cite as

First description of polyp bailout in cold-water octocorals under aquaria maintenance

  • Maria RakkaEmail author
  • Meri Bilan
  • Antonio Godinho
  • Juancho Movilla
  • Covadonga Orejas
  • Marina Carreiro-Silva
Note

Abstract

Cnidarians, characterized by high levels of plasticity, exhibit remarkable mechanisms to withstand or escape unfavourable conditions including reverse development which describes processes of transformation of adult stages into early developmental stages with higher mobility. Polyp bailout is a stress-escape response common among scleractinian species, consisting of massive detachment of live polyps and subsequent death of the mother colony. Here, we describe two cases of polyp bailout in the cold-water octocoral species Acanthogorgia armata and Acanella arbuscula. During maintenance in aquaria, specimens of both species presented coenosarc withdrawal and loss of sclerites, followed by detachment of intact polyps. This is a strong indication of reverse development which can be a very important strategy under stress conditions and has not been reported before in cold-water octocorals.

Keywords

Reverse development Deep-sea Stress response Life history traits Cnidaria Alcyonacea 

Notes

Acknowledgements

This study was supported by the European Union’s Horizon 2020 research and innovation program, under the ATLAS (Grant Agreement No. 678760) and MERCES project (Grant Agreement No. 689518). This output reflects only the author’s view, and the European Union cannot be held responsible for any use that may be made of the information contained therein. The MEDWAVES cruise was supported by the ATLAS project and the Spanish Ministry of Economy, Industry and Competitivity. Maria Rakka is funded by a DRCT Ph.D. Grand (Reference M3.1.a/F/047/2015.). We are grateful to the members of the Rebikoff-Niggeler Foundation, the crew of the manned submersible Lula and Dr. Andreia Braga-Henriques for collection and maintenance of the coral specimens of Acanthogorgia armata. We are also grateful to all the crew of the RV Sarmiento de Gamboa, the Marine Technology Unit (UTM – CSIC), the ROV team from ACSM and all MEDWAVES cruise participants for their support during sampling and maintenance of Acanella arbuscula.

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

Ethical approval

All applicable international, national and/or institutional guidelines for the care and use of animals were followed.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.IMAR – Institute of Marine ResearchUniversity of the AzoresHortaPortugal
  2. 2.MARE – Marine and Environmental Sciences CentreHortaPortugal
  3. 3.OKEANOS Research Unit-Center of the University of the AzoresHortaPortugal
  4. 4.Instituto de Ciencias del Mar (ICM-CSIC)BarcelonaSpain
  5. 5.Instituto Español de Oceanografía, Centro Oceanográfico de Baleares, Estación de Investigación Jaume FerrerMahónSpain
  6. 6.Instituto Español de Oceanografía, Centro Oceanográfico de BalearesPalmaSpain

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