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Polyp expansion of passive suspension feeders: a red coral case study

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153 days ago
Polyp expansion of passive suspension feeders: a red coral case study https://t.co/gaJIg87PGU https://t.co/CpnaorlBu8
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Supplemental Information

Periodograms from three different colonies

Periodograms from three different colonies. Example of three periodograms from three different colonies (peaks represent polyp expansion), showing endogenous rhythms at 18°C and still-water conditions. On the left the recorded normalised activities (i.e. the number of pixels divided by the maximum polyp expansion for that experiment); on the right the Lomb periodogram with frequencies on the X axis and number of occurrences on the Y axis. Figures close to the peaks indicate the periods. The 3 dashed lines represent the significativity of the peaks, 0.1, 0.01 and 0.001, the smallest value corresponding to the highest significativity.

DOI: 10.7287/peerj.preprints.27490v1/supp-1

Figure 2 SEM: Records of individual polyp activity. (

Figure 2 SEM: Records of individual polyp activity. (A) The area below the peaks for a given experiment. (B) The derivative of this curve with absolute values (increase or decrease in polyp expansion). These records usually show a steeper descent after opening.

DOI: 10.7287/peerj.preprints.27490v1/supp-2

Corallium rubrum polyp activity at 18°C and 3 cm s-1 current speed

Corallium rubrum polyp activity at 18°C and 3 cm s-1 current speed.

DOI: 10.7287/peerj.preprints.27490v1/supp-3

Raw Data Corallium rubrum

Data of the 1) field observations (seston and zooplankton) and 2) experiment variables (temperature, currents & chemical signals)

DOI: 10.7287/peerj.preprints.27490v1/supp-4

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Sergio Rossi conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Lucia Rizzo analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Jean-Claude Duchêne conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Data Deposition

The following information was supplied regarding data availability:

Raw data sample is shown in figures 1 & 2 of the supplementary material. An example of the polyp expansion is also shown in a selected video recording.

Funding

Support for this study was provided by an F.P.I. fellowship from the Spanish Ministry of Education and Culture (MEC), which was granted to SR under D.G.I.C.Y.T. project PB94-0014-C02-01 for the in situ observations. The Beca Posdoctoral del Ministerio de Ciencia e Innovación (EX2006-1730, executed in the Prof. Antoine Grémare laboratory), the Ramón y Cajal contract (RyC-2007-01327) and a Marie Curie International Outgoing Fellowship (ANIMAL FOREST HEALTH, project number 327845) were essential for the ex situ experiments and data treatment. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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