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Feeding cessation alters host morphology and bacterial communities in the ascidian Pseudodistoma crucigaster

Overview of attention for article published in Frontiers in Zoology, January 2016
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Title
Feeding cessation alters host morphology and bacterial communities in the ascidian Pseudodistoma crucigaster
Published in
Frontiers in Zoology, January 2016
DOI 10.1186/s12983-016-0134-4
Pubmed ID
Authors

Susanna López-Legentil, Xavier Turon, Patrick M. Erwin

Abstract

Ascidians 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. We 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. Resting 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. These 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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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 31 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Australia 1 3%
Brazil 1 3%
Unknown 29 94%

Demographic breakdown

Readers by professional status Count As %
Researcher 8 26%
Student > Bachelor 5 16%
Student > Master 5 16%
Student > Ph. D. Student 4 13%
Professor 2 6%
Other 3 10%
Unknown 4 13%
Readers by discipline Count As %
Agricultural and Biological Sciences 15 48%
Biochemistry, Genetics and Molecular Biology 5 16%
Chemistry 3 10%
Environmental Science 2 6%
Immunology and Microbiology 1 3%
Other 1 3%
Unknown 4 13%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 January 2016.
All research outputs
#14,832,901
of 22,840,638 outputs
Outputs from Frontiers in Zoology
#503
of 651 outputs
Outputs of similar age
#220,038
of 395,719 outputs
Outputs of similar age from Frontiers in Zoology
#8
of 15 outputs
Altmetric has tracked 22,840,638 research outputs across all sources so far. This one is in the 32nd percentile – i.e., 32% of other outputs scored the same or lower than it.
So far Altmetric has tracked 651 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 21.0. This one is in the 19th percentile – i.e., 19% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 395,719 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 41st percentile – i.e., 41% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 15 others from the same source and published within six weeks on either side of this one. This one is in the 33rd percentile – i.e., 33% of its contemporaries scored the same or lower than it.