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Romanian Journal of Biology - Zoology
ROMANIAN ACADEMY |
BACTERIAL DIVERSITY IN DEMOSPONGES FROM THE CORAL REEFS OF LAKSHADWEEP, INDIA
ANNIE FEBY*, BABY DIVYA*, SHANTA NAIR**
Abstract:
Marine sponges harbor diverse bacterial communities which form about 60% of their biomass and play critical roles in their survival. Due to the ecological and biotechnological importance of sponges, it is important to understand the diversity of bacteria associated with them. In the present study, bacterial diversity in the two demosponges, Sigmadocia fibulata and Dysidea granulosa inhabiting the coral reefs of Lakshadweep was characterised using PCR-DGGE analysis, during three seasons (premonsoon, monsoon and post-monsoon). The results revealed statistically different banding patterns of bacterial communities in both sponges with D.granulosa having greater taxa richness. The common phylogenetic groups associated with both the sponges were Firmicutes, Proteobacteria, Actinobacteria and Acidobacteria. Spirochetes (Spirochaeta americana), Thermatogae (Fervidobacterium pennivorans) and Chloroflexi (Dehalogenimonas lykanthroporepellens and Caldilinea aerophila) were exclusively associated with D. granulosa, whereas Cyanobacteria (Procholorococcus marinus) with S. fibulata. Firmicutes was themost abundant bacterial group in all the three seasons. There was no significant temporal variation in bacterial diversity, but abundance of the groups in the two sponges varied over time.
Citation:
ANNIE FEBY*, BABY DIVYA*, SHANTA NAIR**, 2021. BACTERIAL DIVERSITY IN DEMOSPONGES FROM THE CORAL REEFS OF LAKSHADWEEP, INDIA, Romanian Journal of Biology - Zoology, 66(1-2): 85–100.
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