Aquatic Microbial Interactions: Ecology, Diversity and Impact of Phytoplankton Parasites

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Parasitology".

Deadline for manuscript submissions: closed (20 November 2021) | Viewed by 2311

Special Issue Editors


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Guest Editor
Department of Marine Biology, Institut de Ciències del Mar (ICM-CSIC), Barcelona, Spain
Interests: marine microbial ecology; host-parasite interactions; protists; phytoplankton; molecular ecology

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Guest Editor
Department of Zoology, University of Oxford, Oxford, UK
Interests: marine microbial ecology; host-parasite interactions; protists; phytoplankton; molecular ecology

Special Issue Information

Dear Colleagues,

Phytoplankton and their seasonal blooms play an essential role in aquatic food webs. They are responsible for half of global primary production, fixing CO2, which is then recycled through ecological interactions contributing to biogeochemical cycles and transferring nutrients across multiple trophic levels of the food web. In recent decades, studies on aquatic microbial ecology have highlighted that eukaryotic parasitic interactions are an important driving factor for the dynamics of primary producers, which may control host population and bloom dynamics, amending phytoplankton communities and leading to species succession. Our knowledge of the biology, ecology, diversity and dynamics of such aquatic microbial interactions, however, is very limited. Increased research in identifying, quantifying and understanding the nature of these parasitic interactions is pivotal to comprehending the role played by microbial parasitism and its impact on aquatic ecosystems.

In this Special Issue, we aim to highlight studies on aquatic microbial interactions with a focus on eukaryotic parasites of phytoplankton, including freshwater and marine habitats. We are interested in the identification and quantification of host–parasite associations; parasite diversity and distribution, host-parasite seasonal dynamics, and the impact of eukaryotic parasitism on the phytoplankton population, harmful algal blooms and community structure. Environmental studies and culture-based approaches on the effects of abiotic (e.g., salinity and temperature) and biotic factors (e.g., competition and grazing) on infection dynamics are also welcome.

Dr. Albert Reñé
Dr. Elisabet Alacid
Guest Editors

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Keywords

  • phytoplankton
  • protists
  • parasitism
  • harmful algal blooms
  • host–parasite dynamics
  • diversity
  • aquatic microbial ecosystems
  • molecular ecology

Published Papers (1 paper)

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Research

13 pages, 3158 KiB  
Article
Temperature Affects the Biological Control of Dinoflagellates by the Generalist Parasitoid Parvilucifera rostrata
by Matthew Schmitt, Aaron Telusma, Estelle Bigeard, Laure Guillou and Catharina Alves-de-Souza
Microorganisms 2022, 10(2), 385; https://doi.org/10.3390/microorganisms10020385 - 7 Feb 2022
Cited by 5 | Viewed by 1730
Abstract
The increase in emerging harmful algal blooms in the last decades has led to an extensive concern in understanding the mechanisms behind these events. In this paper, we assessed the growth of two blooming dinoflagellates (Alexandrium minutum and Heterocapsa triquetra) and [...] Read more.
The increase in emerging harmful algal blooms in the last decades has led to an extensive concern in understanding the mechanisms behind these events. In this paper, we assessed the growth of two blooming dinoflagellates (Alexandrium minutum and Heterocapsa triquetra) and their susceptibility to infection by the generalist parasitoid Parvilucifera rostrata under a temperature gradient. The growth of the two dinoflagellates differed across a range of temperatures representative of the Penzé Estuary (13 to 22 °C) in early summer. A. minutum growth increased across this range and was the highest at 19 and 22 °C, whereas H. triquetra growth was maximal at intermediate temperatures (15–18 °C). Interestingly, the effect of temperature on the parasitoid infectivity changed depending on which host dinoflagellate was infected with the dinoflagellate responses to temperature following a positive trend in A. minutum (higher infections at 20–22 °C) and a unimodal trend in H. triquetra (higher infections at 18 °C). Low temperatures negatively affected parasitoid infections in both hosts (i.e., “thermal refuge”). These results demonstrate how temperature shifts may not only affect bloom development in microalgal species but also their control by parasitoids. Full article
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