Effect of dietary phytase on water and fecal prokaryotic and eukaryotic microbiomes in a hybrid tilapia (Oreochromis aureus x O. niloticus) mixotrophic biofloc production system

Ray, Candis L.; Abernathy, Jason W.; Green, Bartholomew W.; Rivers, Adam R.; Schrader, Kevin K.; Rawles, Steven D.; McEntire, Matthew E.; Lange, Miles D.; Webster, Carl D.

doi:10.1016/j.aquaculture.2023.740433

Cited by 2 publications

(1 citation statement)

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“…27 However, mammalian serum is irrelevant to the expected natural life of Capsaspora , which has only been detected in Biomphalaria snails and once in fish feces (possibly caused by the fish eating snails). 42 Thus, our discovery that Biomphalaria tissue and hemolymph induce aggregation suggests that this aggregative phenotype is an ecologically relevant response to a host environment . As further support for the ecological significance of this phenotype, we found that all three existing isolated strains of Capsaspora aggregate in response to snail hemolymph—suggesting that Capsaspora aggregation is a widely conserved cellular response to the host environment.…”

Section: Discussionmentioning

confidence: 99%

Host lipids regulate multicellular behavior of a predator of a human pathogen

Kidner,

Goldstone,

Laidemitt

et al. 2024

Preprint

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As symbionts of animals, microbial eukaryotes benefit and harm their hosts in myriad ways. A model microeukaryote (Capsaspora owczarzaki) is a symbiont ofBiomphalaria glabratasnails and may prevent transmission of parasitic schistosomes from snails to humans. However, it is unclear which host factors determineCapsaspora’s ability to colonize snails. Here, we discovered thatCapsasporaforms multicellular aggregates when exposed to snail hemolymph. We identified a molecular cue for aggregation: a hemolymph-derived phosphatidylcholine, which becomes elevated in schistosome-infected snails. Therefore,Capsasporaaggregation may be a response to the physiological state of its host, and it may determine its ability to colonize snails and exclude parasitic schistosomes. Furthermore,Capsasporais an evolutionary model organism whose aggregation may be ancestral to animals. This discovery, that a prevalent lipid inducesCapsasporamulticellularity, suggests that this aggregation phenotype may be ancient. Additionally, the specific lipid will be a useful tool for further aggregation studies.

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Section: Discussionmentioning

confidence: 99%