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Towards HAB-Controlling Technology: Studying Parasitoid-Dinoflagellate Interactions on Individual- and Population-Scales

Project description

Killer parasites could tame harmful algal blooms

Harmful algal blooms (HABs) are rapidly growing algae populations that have toxic effects on people and marine animals. Due to increased human activities in our waterways, HABs are occurring more frequently. Most studies have focused on what triggers them, but few have looked at natural ways of controlling and stopping these blooms. The ParaDinoInt project is studying the interactions between dinoflagellates, single-celled motile algae, and parasitoids, smaller single-celled protists which parasitise dinoflagellates and kill their hosts. Scientists are comparing natural HAB-causing dinoflagellate and parasitoid populations during bloom and non-bloom conditions, investigating the cell-cell interactions between dinoflagellates and parasitoids in the lab, and modelling these interactions in order to harness nature and battle HABs in an environmentally friendly way.

Objective

Harmful Algal Blooms (HABs) are naturally occurring seasonal algal blooms which can have major negative impacts on human activities and health in coastal areas. While the factors triggering these high biomass blooms has received much attention in the last decades, far less is known about what causes blooms to terminate. Parasitoid infection of dinoflagellates may play a major role in the termination of HABs along the Balearic and Catalan coasts; however, very little is known about the biological or the biophysical mechanisms controlling parasitoid infection in dinoflagellates, nor how prevalent parasitoids are in natural dinoflagellate populations. The focus of this project is to unravel the interactions between parasitoids and dinoflagellates and the cellular and population levels to determine how parasitoids might be used to control HABs. I will accomplish this by: (1) studying the abundance of parasitoids and dinoflagellates of natural phytoplankton assemblages during bloom and non-bloom conditions in Cala Santanyí (Mallorca); (2) conducting a series of microfluidic experiments to study the biophysics, behaviors of and interactions between individual parasitoids, host cells, and healthy dinoflagellates; (3) modeling the interactions between dinoflagellates and parasitoids to determine the concentration of parasitoids necessary to control HABs along; and, (4) validating the model results using a series of microcosm experiments. By studying the biophysical and behavioral interactions between dinoflagellates and parasitoids at both individual- and population-based scales, the long-term goal of this project is to exploit these interactions as an effective, environmentally-friendly method to control HABs near the Balearic Islands and the Catalan coast.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

(opens in new window) H2020-MSCA-IF-2019

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Coordinator

UNIVERSITAT DE LES ILLES BALEARS
Net EU contribution
€ 160 932,48
Address
CARRETERA DE VALLDEMOSSA KM 7.5
07122 PALMA DE MALLORCA
Spain
Region
Comunidad de Madrid Comunidad de Madrid Madrid
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 160 932,48