Table 2 Genetic analyses of invasive genotype Ia constrained by oceanic basins (West-Ind Ocean, Red Sea and Mediterranean Sea) and by different status of invasion in the Mediterranean (established invaders and invasion front).

Dataset	Alignment	Population	Sequences	Nucleotide diversity	Number of haplotypes	Number of segregating sites	Tajima's D statistic	Tajima (p)
SSU	West-Ind Ocean	Mauritius	11	0.024	20	105	− 1.81	0.0702
	West-Ind Ocean	Zanzibar	23	0.024	20	105	− 1.81	0.0702
	Red Sea	Eilat	84	0.005	22	279	− 3.38	0.0007
	Med Sea (all)	Falasarna	6	0.010	91	513	− 3.05	0.0023
		Nahsholim	3
		Shikmona	72
		Avola	61
		Capo Passero	76
		Plemmirio	70
		Marzamemi	33
	Med Sea (established invaders)	Falasarna	6	0.007	25	465	− 3.42	0.0006
		Nahsholim	3
		Shikmona	72
	Med Sea (invasion front)	Avola	61	0.011	63	202	− 2.62	0.0087
		Capo Passero	76
		Plemmirio	70
		Marzamemi	33
SSU + ITS	Red Sea	Eilat	82	0.018	29	420	− 2.60	0.0093
	Med Sea (all)	Shikmona	72	0.019	97	535	− 2.34	0.0193
		Avola	61
		Capo Passero	76
		Plemmirio	70
	Med Sea (established invaders)	Shikmona	72	0.017	22	365	− 2.60	0.0095
	Med Sea (invasion front)	Avola	61	0.019	72	477	− 2.31	0.0202
		Capo Passero	76
		Plemmirio	70

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