High similarity in the microbiota of cold-water sponges of the Genus Mycale from two different geographical areas

PeerJ

article

César A. Cárdenas¹  Marcelo González-Aravena¹  Alejandro Font¹  Jon T. Hestetun²  Eduardo Hajdu³  Nicole Trefault⁴  Maja Malmberg⁵  Erik Bongcam-Rudloff⁵ 

[1] Departamento Científico, Instituto Antártico Chileno;Marine Biodiversity Group, Department of Biology, University of Bergen;Museu Nacional, Departamento de Invertebrados, Universidade Federal do Rio de Janeiro;GEMA Center for Genomics, Ecology & Environment, Universidad Mayor;SLU Global Bioinformatics Centre, Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences;Section of Virology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences

关键词: Porifera;    16S rRNA;    High throughput sequencing;    Antarctica;    Subantarctic;    Magallanes;    Cold-water filter feeders;   

DOI  :  10.7717/peerj.4935

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Sponges belonging to genus Mycale are common and widely distributed across the oceans and represent a significant component of benthic communities in term of their biomass, which in many species is largely composed by bacteria. However, the microbial communities associated with Mycale species inhabiting different geographical areas have not been previously compared. Here, we provide the first detailed description of the microbiota of two Mycale1,300 km) with contrasting environmental conditions. The sponges Mycale (Aegogropila) magellanica and Mycale (Oxymycale) acerata are both abundant members of benthic communities in the Magellan region and in Antarctica, respectively. High throughput sequencing revealed a remarkable similarity in the microbiota of both sponge species, dominated by Proteobacteria and Bacteroidetes, with both species sharing more than 74% of the OTUs. In contrast, 16% and 10% of the OTUs were found only in either M. magellanica or M. acerata, respectively. Interestingly, despite slight differences in the relative abundance, the most dominant OTUs were present in both species, whereas the unique OTUs had very low abundances (less than 1% of the total abundance). These results show a significant overlap among the microbiota of both Mycale species and also suggest the existence of a low level of specificity of the most dominant symbiont groups.

【 授权许可】

CC BY