Microorganisms-11-01730-g007

Autor/Urheber:

Urban Tillmann, Aditee Mitra, Kevin J. Flynn, Michaela E. Larsson

Attribution:

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Shortlink:

https://dewiki.de/b/3761e3

Quelle:

Wikimedia Commons

Größe:

2030 x 1019 Pixel (924148 Bytes)

Beschreibung:

Suggested sequence of events leading to the formation of the mucus trap by Prorocentrum pervagatum.

(A) Solitary cells (cell length ca. 13 µm) swim in a spiralling style, releasing mucus from the large pores.

(B–D) Under certain conditions, most likely of very low turbulence, the spiral swimming style coupled with random changes in direction lead to a process of mucus deposition and physical pushing by the Prorocentrum cell that leads to the formation of a hollow mucus ball. As the mucus ball takes shape other particles, and notably motile potential prey, become stuck to the outside surface. Towards completion of the trap, with the Prorocentrum now located within the hollow ball near one of the few remaining openings, the continuing rotational swimming of the dinoflagellate draws water and particles in through the large opening (a “rotating position”), with water exiting through the porous mucus walls, leaving particles trapped on the inside of mucus ball.

Trapped prey are immobilized by a combination of chemical (allelochemical) and physical (mucus threads) means, and may then be consumed (E). When the trap is vacated, the decaying remnants then sink, while the Prorocentrum builds another trap.

Lizenz:

CC BY 4.0

Credit:

Mucus-Trap-Assisted Feeding Is a Common Strategy of the Small Mixoplanktonic Prorocentrum pervagatum and P. cordatum (Prorocentrales, Dinophyceae). In: MDPI: Microorganisms, vol. 11, No. 7, Special Issue 10th Anniversary of Microorganisms: Past, Present and Future, ISSN 2076-2607, 1 July 2023, pp. 1730; doi:10.3390/microorganisms11071730

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