Marine Bacteria as Probiotics and Their Applications in Aquaculture

Nikapitiya, Chamilani

doi:10.1002/9783527665259.ch07

Cited by 3 publications

(1 citation statement)

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“…Establishing and maintaining a "healthy" fish microbial community requires a basic understanding of the diversity and spatial and temporal dynamics of fish-associated microbial communities and their impact on host growth and health [57].Aquatic organisms all have habitats in the water column or sediment, and while intestinal microbes vary widely among organisms, the structural characteristics of their mucosal microbial communities can be significantly influenced by habitat conditions [37,51]. Nikapitiya [58]In his study, the relationship between microorganisms in the intestinal environment of clams was investigated to find the differences in the structure of seawater, substrate, and intestinal community of clams, and correlation analysis was performed. The results showed that the environmental factors affecting the distribution of the bacterial community structure of seawater and substrate clams in the aquaculture area were different and varied significantly.…”

Section: Effects Of Environmental Factors On the Intestinal Bacteria ...mentioning

confidence: 99%

Intestinal Bacteria Community Structures of Ruditapes philippinarum and Their Correlation with Environmental Factors

Zhao,

et al. 2024

Preprint

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The intestinal microbial community of aquatic animals is closely related to the environment and thus affects the health of aquatic animals. Here we investigated annual variation of intestinal bacteria community structures of Ruditapes philippinarum cultured using two different methods, bottom sown and raft hanging. Bacterial diversity of seawater and sediment in different seasons was examined as well. Correlation between R. philippinarum intestinal bacteria community structures and environmental factors was analyzed. The results showed that in the two aquculture areas where R. philippinarum was differentially cultured, bacteria community structure of seawater and sediment both altered with seasons. However, neither seasonal changes nor difference in culture methods could significantly affect the intestinal bacteria community structures of R. philippinarum. Additionally, in terms of the alpha diversity of intestinal bacteria communities, there was no significant difference in R. philippinarum cultured using the two methods. For benthic cultured clams, alpha diversity of the intestinal bacterial communities was often higher than that of the environmental bacterial communities. For raft hanging cultured calms, Alpha diversity of the intestinal bacterial communities was normally comparable with that of the environmental counterparts. Beta diversity analysis showed that the intestinal bacterial community structure of R. philippinarum was mainly determined by both deterministic and stochastic processes. Correlation analysis showed that the intestinal bacterial community structures of R. philippinarum were determined by a variety of environmental factors. For clams collected from the benthic culture area, the intestinal bacterial structure was more correlated with the physicochemical properties of sediment in comparing with those of seawater. For clams collected from the raft-culture area, the intestinal bacterial structure was mainly determined by the phsicochemical characteristics of seawater. This study helps us to better understand the bacterial community structure in complex aquaculture ecosystems, providing a reference for healthy shellfish aquaculture and ecosystem protection in aquaculture area.

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