ArticleFrontiers in zoology2016
Feeding cessation alters host morphology and bacterial communities in the ascidian Pseudodistoma crucigaster.
Article in Frontiers in zoology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 14 citations in OpenAlex.
- Depuration of a solitary ascidian depletes transient bacteria without altering microbiome alpha-diversity.FEMS microbiology ecology · 2025Article
- Effects of color variation and physiological state on ascidian microbiomes.MicrobiologyOpen · 2024Article
- Distinct microbial communities in an ascidian-crustacean symbiosis.Environmental microbiology reports · 2024Article
- Symbiotic Associations in Ascidians: Relevance for Functional Innovation and Bioactive Potential.Marine drugs · 2021Review
- Antifouling Activity of Meroterpenes Isolated from the Ascidian Aplidium aff. densum.Marine biotechnology (New York, N.Y.) · 2021Article
- Microbiome Variability across the Native and Invasive Ranges of the Ascidian Clavelina oblonga.Applied and environmental microbiology · 2021Article
- Core and Dynamic Microbial Communities of Two Invasive Ascidians: Can Host-Symbiont Dynamics Plasticity Affect Invasion Capacity?Microbial ecology · 2019Article
- Comparing Two Common DNA Extraction Kits for the Characterization of Symbiotic Microbial Communities from Ascidian Tissue.Microbes and environments · 2018Article
- Endozoicomonas Are Specific, Facultative Symbionts of Sea Squirts.Frontiers in microbiology · 2016Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAscidians can associate with abundant and diverse consortia of microbial symbionts, yet these communities remain unexamined for the majority of host ascidians and little is known about host-symbiont interactions.
methodsWe coupled electron microscopy and 16S rRNA gene tag pyrosequencing to investigate the bacterial communities associated with the colonial ascidian Pseudodistoma crucigaster, a species endemic to the Mediterranean Sea that has a life cycle with two phases: actively-filtering (active) and non-filtering (resting) forms.
resultsResting colonies exhibited a reduced branchial sac (feeding apparatus) and a thickened cuticle. Electron microscope images also suggested higher abundance of colonizing microorganisms on surfaces of resting colonies. Accordingly, bacterial sequences associated with environmental sources (sediment and biofilms, >99 % similarity) were detected exclusively in resting colonies. Bacterial communities of P. crucigaster colonies (active and resting) were dominated by 3 core taxa affiliated (>94 % similarity) with previously described symbiotic Alphaproteobacteria in marine invertebrates. Shifts in rare bacteria were detected when ascidians entered the resting phase, including the appearance of strictly anaerobic lineages and nitrifying bacterial guilds.
conclusionsThese findings suggest that physical (thickened cuticle) and metabolic (feeding cessation) changes in host ascidians have cascading effects on associated bacteria, where modified oxygen concentrations and chemical substrates for microbial metabolism may create anaerobic microhabitats and promote colonization by environmental microorganisms.
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