Publication Date:
2024-03-15
Description:
Bacteria associated with marine invertebrates are thought to have a range of important roles that benefit the host including production of compounds that may exclude pathogenic microorganisms and recycling of essential nutrients. This study characterised the microbiome of a gonochoric octocoral, Lobophytum pauciflorum, and investigated whether either sex or environmental stresses influenced the diversity of the associated microbiome through amplicon profiling of the bacterial 16S rRNA gene. Sequences affiliated to Spirochaetaceae and Endozoicimonaceae dominated the microbiome of L. pauciflorum, representing 43% and 21% of the community, respectively. Among the dominant class affiliations, no sex-specific differences were detected, though unassigned sequences were at a 2-fold higher relative abundance in samples from female individuals than from males. These potentially novel sequences contributed to observed differences between sexes as detected by a multivariate analysis at the OTU level. Exposing L. pauciflorum fragments to increased temperature (31°C), decreased pH (7.9) or both stressors simultaneously for 12 days did not significantly alter the microbial community, indicating that the soft coral microbiome is relatively resilient to short-term environmental stress.
Keywords:
Alkalinity, total; Alkalinity, total, standard deviation; Alpha diversity; Alpha diversity, standard deviation; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Class; Cnidaria; Coast and continental shelf; Community composition and diversity; Containers and aquaria (20-1000 L or 〈 1 m**2); EXP; Experiment; Experiment duration; Family; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Laboratory experiment; Lobophytum pauciflorum; OA-ICC; Ocean Acidification International Coordination Centre; Operational taxonomic unit; Operational taxonomic unit, standard deviation; Orpheus_Pelorus_Island; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Registration number of species; Salinity; Salinity, standard deviation; Sequence abundance; Sequence abundance, standard error; Shannon Diversity Index; Shannon Diversity Index, standard deviation; Simpson index of diversity; Simpson index of diversity, standard deviation; Single species; South Pacific; Species; Temperature; Temperature, water; Temperature, water, standard deviation; Treatment; Tropical; Type; Uniform resource locator/link to reference
Type:
Dataset
Format:
text/tab-separated-values, 1036 data points
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