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Oculina patagonica

ABSTRACT: Host-targeted RAD-Seq reveals genetic changes in the coral Oculina patagonica associated with poleward range expansion along the Spanish Mediterranean coast

PROVIDER: PRJNA343301 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	SRR4308720_1.fastq.gz	Fastqsanger.gz
	SRR4308720_2.fastq.gz	Fastqsanger.gz
	SRR4308730_1.fastq.gz	Fastqsanger.gz
	SRR4308730_2.fastq.gz	Fastqsanger.gz
	SRR4308740_1.fastq.gz	Fastqsanger.gz

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Oculina patagonica

Project description:Host-targeted RAD-Seq reveals genetic changes in the coral Oculina patagonica associated with poleward range expansion along the Spanish Mediterranean coast- PART2

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Project description:Host-targeted RAD-Seq reveals genetic changes in the coral Oculina patagonica associated with poleward range expansion along the Spanish Mediterranean coast- baits sequence reads

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Semirossia patagonica

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New insights into Oculina patagonica coral diseases and their associated Vibrio spp. communities.

Project description:Bleaching of Oculina patagonica has been extensively studied in the Eastern Mediterranean Sea, although no studies have been carried out in the Western basin. In 1996 Vibrio mediterranei was reported as the causative agent of bleaching in O. patagonica but it has not been related to bleached or healthy corals since 2003, suggesting that it was no longer involved in bleaching of O. patagonica. In an attempt to clarify the relationship between Vibrio spp., seawater temperature and coral diseases, as well as to investigate the putative differences between Eastern and Western Mediterranean basins, we have analysed the seasonal patterns of the culturable Vibrio spp. assemblages associated with healthy and diseased O. patagonica colonies. Two sampling points located in the Spanish Mediterranean coast were chosen for this study: Alicante Harbour and the Marine Reserve of Tabarca. A complex and dynamic assemblage of Vibrio spp. was present in O. patagonica along the whole year and under different environmental conditions and coral health status. While some Vibrio spp. were detected all year around in corals, the known pathogens V. mediteranei and V. coralliilyticus were only present in diseased specimens. The pathogenic potential of these bacteria was studied by experimental infection under laboratory conditions. Both vibrios caused diseased signs from 24?°C, being higher and faster at 28?°C. Unexpectedly, the co-inoculation of these two Vibrio species seemed to have a synergistic pathogenic effect over O. patagonica, as disease signs were readily observed at temperatures at which bleaching is not normally observed.

| S-EPMC4139725 | biostudies-literature

Project description:Lionfish Range Expansion RAD-seq

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Bacteria associated with mucus and tissues of the coral Oculina patagonica in summer and winter.

Project description:The relative abundance of bacteria in the mucus and crushed tissue of the Mediterranean coral Oculina patagonica was determined by analyses of the 16S rRNA genes of isolated colonies and from a 16S rRNA clone library of extracted DNA. By SYBR gold staining, the numbers of bacteria in mucus and tissue samples were 6.2 x 10(7) and 8.3 x 10(8)/cm2 of coral surface, respectively, 99.8% of which failed to produce colonies on Marine Agar. From analysis of mucus DNA, the most-abundant bacterium was Vibrio splendidus, representing 68% and 50% of the clones from the winter and summer, respectively. After removal of mucus from coral by centrifugation, analyses of DNA from the crushed tissue revealed a large diversity of bacteria, with Vibrio species representing less than 5% of the clones. The most-abundant culturable bacteria were a Pseudomonas sp. (8 to 14%) and two different alpha-proteobacteria (6 to 18%). Out of a total 1,088 16S rRNA genes sequenced, 400 different operational taxonomic units were identified (> 99.5% identity). Of these, 295 were novel (< 99% identical to any sequences in the GenBank database). This study provides a comprehensive database for future examinations of changes in the bacterial community during bleaching events.

| S-EPMC1538755 | biostudies-literature

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