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Table 1 Pyrosequencing yield and mean indices of bacterial diversity in the experimental groups of sea bass

From: The highly variable microbiota associated to intestinal mucosa correlates with growth and hypoxia resistance of sea bass, Dicentrarchus labrax, submitted to different nutritional histories

  LH1-LH2 C1-LH2 C1-C2 C1-HG2 HG1-HG2 p-value
Valid reads per sample before normalization 17634ab ± 1052 20894a ± 1006 16603b ± 867 18492ab ± 1135 20603a ± 900 0.01
Diversity index after normalization:
 OTU richness 45.6 ± 3.7 50.7 ± 5.1 45.4 ± 3.6 47.3 ± 3.4 49.3 ± 2.9 0.83
 Dominance 0.31 ± 0.03 0.38 ± 0.05 0.30 ± 0.03 0.41 ± 0.05 0.33 ± 0.03 0.21
 Intra-group similarity (Bray-Curtis) 0.53ab ± 0.02 0.42c ± 0.03 0.52ab ± 0.02 0.60a ± 0.02 0.52b ± 0.02 ≤0.001
  1. The means (± SE) were compared by ANOVA; in case of significant difference, superscript letters on the same line indicated the significant differences after post-hoc Tukey’s test. The diversity indices were computed after normalizing the numbers of total reads per sample, based on the minimum observed (11,599 reads). Each group was named after its diets during the two challenge phases: HUFA-deficient diet at both phases (LH1-LH2), or only at phase 2 (C1-LH2); hypoproteic diet with high starch supply at both phases (HG1-HG2), or only at phase 2 (C1-HG2); control with standard diets (C1-C2)