Table 1.

Mean ± standard error of univariate measures of microbiome diversity for each host species, analyzed with a minimum threshold of 500 reads, and defining OTUs by 97% sequence similarity.

Species	S	H′	D	Within-host BCD	SIMPER OTUs	n
Aiolochroia crassa	132.2 ± 3.88	4.09 ± 0.07	39.91 ± 5.21	33.7 ± 7.9	25	5
Amphimedon compressa	70.4 ± 6.02	1.17 ± 0.28	1.76 ± 0.28	16.2 ± 5.1	1	5
Amphimedon erina	84.2 ± 18.74	0.91 ± 0.51	2.34 ± 1.2	33.7 ± 19.2	2	5
Aplysina cauliformis	162.4 ± 3.50	4.39 ± 0.05	54.5 ± 5.38	26 ± 6	27	5
Aplysina fulva	150.6 ± 4.11	4.24 ± 0.04	47.95 ± 3.69	27.7 ± 6.6	25	5
Chalinula molitba	61.67 ± 1.45	2.77 ± 0.12	9.14 ± 1.06	24.1 ± 10.8	9	3
Chondrilla caribensis	68.4 ± 9.10	2.71 ± 0.15	9.24 ± 2.35	29.2 ± 9.1	12	5
Dysidea etheria	90 ± 14.32	2.49 ± 0.30	8.16 ± 2.69	66.4 ± 15.8	15	5
Ectyoplasia ferox	95.2 ± 3.31	3.44 ± 0.07	21.98 ± 2.15	24.6 ± 6.2	17	5
Erylus formosus	172.2 ± 6.16	4.38 ± 0.12	53.48 ± 10.69	29.7 ± 7	30	5
Haliclona tubifera	76.25 ± 10.09	2.38 ± 0.46	7.38 ± 2.19	52.5 ± 18.3	9	4
Haliclona vansoesti	54 ± 1.00	2.95 ± 0.26	11.35 ± 5.52	23.9 ± 19.5	11	2
Iotrochota birotulata	66 ± 5.02	0.4 ± 0.11	1.13 ± 0.04	4 ± 1.5	1	4
Lissodendoryx colombiensis	64 ± 10.28	1.2 ± 0.08	2.42 ± 0.25	42.4 ± 18.5	4	5
Mycale laevis	76.8 ± 9.65	2.06 ± 0.26	5.72 ± 2.03	48.8 ± 15.6	6	5
Mycale laxissima	82.8 ± 1.85	2.11 ± 0.18	4.26 ± 0.61	51.8 ± 13.2	8	5
Niphates erecta	79.2 ± 4.65	2.61 ± 0.12	7.72 ± 1.03	41.4 ± 10.4	10	5
Placospongia intermedia	69.25 ± 14.05	2.75 ± 0.47	15.15 ± 7.62	73 ± 21.8	17	4
Tedania ignis	49 ± 4.38	1.08 ± 0.11	2.33 ± 0.34	35.5 ± 9.9	3	5
Xestospongia bocatorensis	62 ± 3.61	2.02 ± 0.50	5.95 ± 2.90	35.9 ± 17.8	6	3

S, OTU richness; H′, Shannon index; D, inverse Simpson index; within-host BCD, intraspecific percentage Bray–Curtis dissimilarity; SIMPER OTUs, number of OTUs explaining 40% of Bray–Curtis dissimilarity; n, sample size.